Phase transitions in K₂Cr₂O₇ and structural redeterminations of phase II

Crystals of phase II K₂Cr₂O₇, potassium dichromate, space group P, grown from aqueous solution undergo a first-order transition to phase I, space group reportedly P2₁/n, at a phase-transition temperature, T_PT, of 544 (2) K on first heating; the corresponding transition on cooling is at 502 (2) K. The endotherm on subsequent heatings occurs reproducibly at T_PT = 531 (2) K. Mass loss between ca 531 and 544 K, identified as included water, is rapid and continues more slowly to higher temperatures for a total loss of ca 0.20%. The higher T_PT on first heating is associated with the increasing pressure of superheated water occupying inclusion defects. The latent diagonal glide plane in phase II allows the structure of phase I to be inferred. The triclinic structure at 296 K has been independently redetermined. Normal probability analysis shows high consistency between the resulting and previous atomic coordinates, but with uncertainties reduced by a factor of ca 2. The earlier uncertainties are systematically underestimated by a comparable factor. The structure of phase IIb, space group A2/a on transposing axes, was determined at ca 300 K by Krivovichev et al. [Acta Cryst. (2000), C56, 629-630]. The first-order transition between phases I and II arises from the ca 60° relative rotation of terminal O atoms in each tetrahedron as the n glide plane is gained or lost. A transition between phases IIb and I, also of first order, is likely but not between phases II and IIb. An intermediate phase may exist between phases IIb and I.

S1. Comment

Normal probability analysis shows the present coordinates do not differ significantly from the two earlier studies but that the latter systematically underestimate the uncertainties in these values by a factor \sim2. Measurement with a Perkin-Elmer Pyris-1 T GA reveals an insignificant loss of mass on first heating until T_PT is reached. A sharp and reproducible mass loss of ~0.20%, based on several samples, occurs between T_PT and 544 K. The thermal hysteresis and entropy change at T_PT), measured with a Perkin-Elmer DSC-7 at heating rates ranging from 1 to 100 K min⁻¹, agree with the values reported by Hess & Eysel (1989) except for the initial results on heating. A reproducible endothermic phase transition at 544 (2) K, on extrapolation to 0 K min⁻¹ heating rate, is observed on solution-grown samples. The exothermic transition on cooling thereafter is reproducibly observed at 502 (2) K, the endothermic transition on second and subsequent heatings at 531 (2) K. The increase in T_PT of 13 K is caused by the \sim5MPa pressure exerted by water at 531 K. The thermal hysteresis ranges from ~32 K at the lowest to ~80 K at the highest heating rate, isothermally extrapolating to ~29 K and is indicative of a first order phase transition. The averaged entropy change both at the initial and subsequent T(PT) is ΔS = 4.0 (1) J mol⁻¹ K⁻¹.

The component and total coordinate differences between phases II and IIb exceed the Δ(xyz)_max < approx. 1.5 Å limit for reversible solid state phase transitions Corresponding angular changes are also unusually large, with Cr3O4 and Cr42O4 tetrahedral rotations of 67 and 81° around their respective Cr-Oshared-axes. Atomic position changes of such magnitude are highly unlikely, as is the possibility of a transition between phases II and IIb.

The unit cell and space group of monoclinic phase I determined at 573 K by Klement & Schwab (1960) has a supergroup-subgroup and unit cell relationship to phase II that allows a transition between the two phases. An inferred structure for phase I has been derived from phase II by assuming pairs of atoms related by the n glide plane in phase I undergo equal but opposite displacements at the transition. In the transition, the three terminal O atoms in each tetrahedron undergo a rotation of \sim60° about the O_shared-Cr- axis, with respect to the Cr—O—Cr plane. In consequence, the conformation of the Cr₂O₇²⁻ ion changes to that reported in one of the two independent ions in SrCr₂O₇ (Wilhelmi, 1967). No difference between corresponding atomic positions in phases I and II exceeds the Δ(xyz)_max limit by more than 3 estimated uncertainties.

No atomic position in phase II differs from that inferred for the same atom in phase I by more than the Δ(xyz)_max limit, the differences for K2 and O7 being without significance. The transition between phases I and II is, hence, probably of first order. If, however, T_PT<<531 K, as suggested by Kozlova et al. (1978), then a new phase would be expected to intervene between phases IIb and I since a lower value for T_PT would require phase I to be stable below its thermal limit.

S2. Experimental

The intensity data from Crystal 1 and, separately, Crystal 2 were each corrected for absorption with DIFABS following isotropic refinement (Walker & Stuart, 1983). Corrections based on azimuthal scans did not lead to significant reduction in residuals or standard uncertainties (s.u.s) and analytical corrections were precluded by the irregular crystal form. We found the results of corrections made with DIFABS for µ < 5 mm⁻¹ are comparable with those made analytically, a conclusion supported by the minor residual systematic error detected in atomic coordinates The intensies of three control reflections showed no significant variation for either crystal. Structure solution: SIR92 E-map (Altomare et al., 1994), confirmed by Patterson solution. The refined site occupancy factors for the K and Cr atoms were not significantly different from unity. The value of a secondary extinction parameter was also refined. The structure of K₂Cr₂O₇ has been reported both by Brandon & Brown (1968) who used a non-standard triclinic cell (a = 13.367, b = 7.376, c = 7.445 Å) and by Brunton (1973).

Computing details

Data collection: CAD-4-PC (Enraf-Nonius, 1993) for (1). Cell refinement: CAD-4-PC (Enraf-Nonius, 1993) for (1). Data reduction: TEXSAN (Molecular Structure Corp., 1997) for (1). Program(s) used to solve structure: TEXSAN (Molecular Structure Corp., 1997) for (1). Program(s) used to refine structure: TEXSAN (Molecular Structure Corp., 1997) for (1). Software used to prepare material for publication: TEXSAN (Molecular Structure Corp., 1997) for (1).

Figures

(1)

Crystal data

K2Cr2O7	Z = 4
Mr = 294.18	F(000) = 568
Triclinic, P1	Dx = 2.694 Mg m^−3 Dm = 2.676 Mg m^−3 Dm measured by ?
Hall symbol: -P 1	Melting point: 659 K
a = 7.3807 (9) Å	Mo Kα radiation, λ = 0.71073 Å
b = 7.4593 (11) Å	Cell parameters from 25 reflections
c = 13.3910 (16) Å	θ = 14.0–15.0°
α = 96.205 (11)°	µ = 4.13 mm^−1
β = 98.033 (10)°	T = 296 K
γ = 90.914 (12)°	Block, intense-orange
V = 725.37 (16) Å^3	0.27 × 0.20 × 0.14 mm

Data collection

Nonius CAD-4 serial diffractometer	4096 reflections with I > 1.00σ(I)
Radiation source: sealed X-ray tube	Rint = 0.011
Graphite monochromator	θmax = 30.0°, θmin = 1.5°
ω–2θ scans	h = 0→10
Absorption correction: part of the refinement model (ΔF) DIFABS (Walker & Stuart, 1983)	k = −10→10
Tmin = 0.382, Tmax = 0.560	l = −18→18
4533 measured reflections	3 standard reflections every 300 reflections
4227 independent reflections	intensity decay: 0.0%

Refinement

Refinement on F^2	0 constraints
Least-squares matrix: full	w = 4Fo^2/[σ^2(I) + (0.025I)^2]
R[F^2 > 2σ(F^2)] = 0.025	(Δ/σ)max = 0.020
wR(F^2) = 0.040	Δρmax = 0.49 e Å^−3
S = 1.58	Δρmin = −0.40 e Å^−3
4227 reflections	Extinction correction: Zachariasen (1967), equ(3) Acta Cryst.(1968) A24, p213.
200 parameters	Extinction coefficient: 1.27 x 10^-6
0 restraints

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Cr(1)	0.59179 (4)	0.76891 (5)	0.60724 (2)	0.01925 (8)
Cr(2)	0.79289 (4)	0.80674 (5)	0.41375 (2)	0.01880 (8)
Cr(3)	0.81711 (4)	0.42584 (5)	0.11354 (2)	0.01890 (8)
Cr(4)	0.81344 (4)	0.15250 (4)	−0.08323 (2)	0.01835 (8)
K(1)	1.10341 (8)	0.66917 (7)	0.64038 (4)	0.03104 (13)
K(2)	0.25001 (7)	0.76710 (7)	0.34950 (4)	0.02929 (12)
K(3)	0.66252 (6)	−0.08518 (7)	0.15847 (4)	0.02480 (11)
K(4)	0.69509 (8)	0.65240 (7)	−0.13583 (4)	0.03184 (13)
O(1)	0.7201 (3)	0.6124 (3)	0.64937 (14)	0.0342 (5)
O(2)	0.5550 (3)	0.9102 (3)	0.70198 (13)	0.0349 (5)
O(3)	0.4024 (2)	0.6849 (3)	0.54525 (14)	0.0361 (5)
O(4)	0.7076 (2)	0.8937 (2)	0.52700 (13)	0.0296 (4)
O(5)	0.9595 (2)	0.6749 (2)	0.44295 (12)	0.0288 (4)
O(6)	0.8687 (3)	0.9709 (2)	0.36065 (13)	0.0331 (5)
O(7)	0.6345 (2)	0.6952 (3)	0.33667 (14)	0.0362 (5)
O(8)	0.6891 (2)	0.2927 (2)	0.16402 (13)	0.0306 (4)
O(9)	0.9757 (2)	0.5181 (3)	0.19989 (12)	0.0304 (4)
O(10)	0.6948 (3)	0.5751 (3)	0.06114 (13)	0.0345 (5)
O(11)	0.9299 (2)	0.2957 (2)	0.02274 (12)	0.0246 (4)
O(12)	0.6919 (2)	−0.0006 (2)	−0.04330 (13)	0.0296 (4)
O(13)	0.9600 (2)	0.0608 (3)	−0.14886 (15)	0.0373 (5)
O(14)	0.6770 (2)	0.2738 (2)	−0.15168 (12)	0.0270 (4)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Cr(1)	0.0190 (2)	0.0207 (2)	0.0186 (2)	0.00273 (12)	0.00384 (12)	0.00238 (12)
Cr(2)	0.0181 (2)	0.0203 (2)	0.0188 (2)	0.00215 (12)	0.00358 (11)	0.00476 (12)
Cr(3)	0.0192 (2)	0.0183 (2)	0.0185 (2)	−0.00111 (11)	0.00035 (11)	0.00206 (12)
Cr(4)	0.0171 (2)	0.0182 (2)	0.0197 (2)	0.00068 (11)	0.00301 (11)	0.00111 (12)
K(1)	0.0375 (3)	0.0315 (3)	0.0237 (2)	−0.0073 (2)	0.0020 (2)	0.0055 (2)
K(2)	0.0327 (3)	0.0273 (2)	0.0290 (2)	−0.0025 (2)	0.0094 (2)	0.00208 (19)
K(3)	0.0236 (2)	0.0243 (2)	0.0261 (2)	−0.00002 (17)	0.00360 (17)	0.009 (2)
K(4)	0.0373 (3)	0.0302 (3)	0.0278 (2)	0.0102 (2)	0.0035 (2)	0.0023 (2)
O(1)	0.0328 (9)	0.0319 (9)	0.0380 (10)	0.0093 (7)	−0.0001 (7)	0.0100 (8)
O(2)	0.0434 (10)	0.0336 (9)	0.0294 (9)	0.0031 (8)	0.0162 (8)	−0.0029 (7)
O(3)	0.0264 (8)	0.0461 (11)	0.0338 (9)	−0.0043 (8)	−0.0020 (7)	0.0044 (8)
O(4)	0.0381 (9)	0.0248 (8)	0.0294 (8)	0.0010 (7)	0.0168 (7)	0.0027 (6)
O(5)	0.0272 (8)	0.0328 (9)	0.0274 (8)	0.0107 (7)	0.0032 (6)	0.0068 (7)
O(6)	0.0423 (10)	0.0280 (9)	0.0324 (9)	−0.0014 (7)	0.0109 (7)	0.0117 (7)
O(7)	0.0273 (8)	0.0438 (11)	0.0344 (9)	−0.0053 (8)	−0.0018 (7)	−0.0003 (8)
O(8)	0.0302 (8)	0.0290 (9)	0.0336 (9)	−0.0070 (7)	0.0084 (7)	0.0045 (7)
O(9)	0.0301 (8)	0.0366 (9)	0.0220 (7)	−0.0105 (7)	0.0000 (6)	−0.0010 (7)
O(10)	0.0407 (10)	0.0317 (9)	0.0310 (9)	0.0140 (8)	0.0024 (7)	0.0053 (7)
O(11)	0.0195 (7)	0.0269 (8)	0.0254 (7)	0.0000 (6)	0.0004 (6)	−0.0026 (6)
O(12)	0.0368 (9)	0.0245 (8)	0.0278 (8)	−0.0078 (7)	0.0055 (7)	0.0046 (6)
O(13)	0.0290 (9)	0.0431 (11)	0.0396 (10)	0.0067 (8)	0.0123 (7)	−0.0068 (8)
O(14)	0.0269 (8)	0.0249 (8)	0.0286 (8)	0.0022 (6)	−0.0016 (6)	0.0065 (6)

Geometric parameters (Å, º)

Cr(1)—O(1)	1.6144 (17)	K(2)—O(3)	2.8386 (19)
Cr(1)—O(2)	1.6158 (17)	K(2)—O(4)^v	2.8569 (17)
Cr(1)—O(3)	1.6036 (17)	K(2)—O(5)^vi	2.7434 (17)
Cr(1)—O(4)	1.7884 (16)	K(2)—O(6)^vi	3.234 (2)
Cr(2)—O(4)	1.7844 (16)	K(2)—O(7)	2.9212 (19)
Cr(2)—O(5)	1.6181 (16)	K(2)—O(9)^vi	3.0827 (17)
Cr(2)—O(6)	1.6110 (17)	K(2)—O(13)^vii	3.303 (2)
Cr(2)—O(7)	1.6035 (17)	K(2)—O(14)^vii	2.7621 (17)
Cr(3)—O(8)	1.6216 (16)	K(3)—O(2)^iv	2.8547 (17)
Cr(3)—O(9)	1.6141 (16)	K(3)—O(6)^viii	2.8990 (19)
Cr(3)—O(10)	1.6034 (17)	K(3)—O(7)^viii	3.065 (2)
Cr(3)—O(11)	1.7795 (16)	K(3)—O(8)	2.8146 (18)
Cr(4)—O(11)	1.7877 (15)	K(3)—O(10)^viii	2.7511 (18)
Cr(4)—O(12)	1.6213 (16)	K(3)—O(12)	2.8764 (17)
Cr(4)—O(13)	1.6030 (17)	K(3)—O(12)^ix	2.9610 (19)
Cr(4)—O(14)	1.6195 (16)	K(3)—O(13)^x	2.8108 (18)
K(1)—O(1)	2.8753 (19)	K(3)—O(14)^ix	2.8397 (17)
K(1)—O(3)^i	2.7046 (19)	K(4)—O(1)^xi	2.892 (2)
K(1)—O(5)	2.7131 (17)	K(4)—O(2)^xi	3.134 (2)
K(1)—O(5)^ii	2.6920 (18)	K(4)—O(8)^vii	2.8501 (18)
K(1)—O(6)^iii	2.6912 (18)	K(4)—O(9)^xii	2.9498 (19)
K(1)—O(8)^ii	2.8267 (18)	K(4)—O(10)	2.7604 (19)
K(1)—O(9)^ii	2.7995 (18)	K(4)—O(11)^xii	2.9618 (16)
K(2)—O(1)^iv	2.8442 (19)	K(4)—O(12)^xiii	2.7483 (18)
K(2)—O(2)^v	2.9778 (19)	K(4)—O(14)	2.8088 (17)
Cr(1)···K(2)^v	3.5954 (6)	K(4)···O(14)	2.8088 (17)
Cr(3)···K(1)^ii	3.4180 (6)	K(4)···O(8)^vii	2.8501 (18)
Cr(3)···O(11)^xii	3.5748 (17)	K(4)···O(1)^xi	2.892 (2)
Cr(4)···O(9)^xii	3.5050 (17)	K(4)···O(9)^xii	2.9498 (19)
Cr(4)···O(2)^xiv	3.5230 (19)	K(4)···O(11)^xii	2.9618 (16)
Cr(4)···K(3)^ix	3.5289 (7)	K(4)···O(2)^xi	3.134 (2)
K(1)···O(6)^iii	2.6912 (18)	O(1)···O(9)^ii	3.048 (3)
K(1)···O(5)^ii	2.6920 (18)	O(1)···O(3)^iv	3.249 (3)
K(1)···O(3)^i	2.7046 (19)	O(1)···O(5)^ii	3.482 (2)
K(1)···O(5)	2.7131 (17)	O(1)···O(7)^iv	3.490 (3)
K(1)···O(9)^ii	2.7995 (18)	O(2)···O(8)^iv	3.187 (2)
K(1)···O(8)^ii	2.8267 (18)	O(2)···O(14)^xv	3.207 (2)
K(1)···O(1)	2.8753 (19)	O(2)···O(12)^xv	3.409 (2)
K(1)···O(7)^ii	3.377 (2)	O(2)···O(13)^xv	3.454 (3)
K(2)···O(5)^vi	2.7434 (17)	O(3)···O(3)^iv	3.324 (4)
K(2)···O(14)^vii	2.7621 (17)	O(3)···O(5)^vi	3.360 (2)
K(2)···O(3)	2.8386 (19)	O(3)···O(7)^iv	3.417 (3)
K(2)···O(1)^iv	2.8442 (19)	O(4)···O(6)^iii	3.365 (3)
K(2)···O(4)^v	2.8569 (17)	O(5)···O(5)^ii	3.187 (3)
K(2)···O(7)	2.9212 (19)	O(5)···O(9)	3.357 (2)
K(2)···O(2)^v	2.9778 (19)	O(6)···O(13)^xii	3.250 (3)
K(2)···O(9)^vi	3.0827 (17)	O(7)···O(14)^vii	3.166 (2)
K(2)···O(6)^vi	3.234 (2)	O(7)···O(9)	3.510 (3)
K(2)···O(13)^vii	3.303 (2)	O(9)···O(14)^xii	3.154 (2)
K(3)···O(10)^viii	2.7511 (18)	O(9)···O(13)^xii	3.326 (3)
K(3)···O(13)^x	2.8108 (18)	O(9)···O(11)^xii	3.570 (2)
K(3)···O(8)	2.8146 (18)	O(10)···O(10)^vii	3.223 (4)
K(3)···O(14)^ix	2.8397 (17)	O(10)···O(11)^xii	3.299 (3)
K(3)···O(2)^iv	2.8547 (17)	O(10)···O(14)^vii	3.317 (3)
K(3)···O(12)	2.8764 (17)	O(10)···O(12)^xiii	3.595 (3)
K(3)···O(6)^viii	2.8990 (19)	O(11)···O(11)^xii	3.348 (3)
K(3)···O(12)^ix	2.9610 (19)	O(11)···O(13)^x	3.353 (3)
K(3)···O(7)^viii	3.065 (2)	O(11)···O(12)^x	3.582 (2)
K(4)···O(12)^xiii	2.7483 (18)	O(12)···O(13)^x	3.445 (3)
K(4)···O(10)	2.7604 (19)
O(1)—Cr(1)—O(2)	108.87 (10)	O(7)^viii—K(3)—O(14)^ix	64.72 (5)
O(1)—Cr(1)—O(3)	110.89 (10)	O(8)—K(3)—O(10)^viii	150.58 (6)
O(1)—Cr(1)—O(4)	110.25 (9)	O(8)—K(3)—O(12)	72.02 (5)
O(2)—Cr(1)—O(3)	110.70 (10)	O(8)—K(3)—O(12)^ix	77.35 (5)
O(2)—Cr(1)—O(4)	106.54 (9)	O(8)—K(3)—O(13)^x	83.21 (5)
O(3)—Cr(1)—O(4)	109.49 (9)	O(8)—K(3)—O(14)^ix	122.38 (5)
O(4)—Cr(2)—O(5)	108.86 (8)	O(10)^viii—K(3)—O(12)	79.38 (5)
O(4)—Cr(2)—O(6)	109.55 (9)	O(10)^viii—K(3)—O(12)^ix	97.76 (5)
O(4)—Cr(2)—O(7)	110.43 (9)	O(10)^viii—K(3)—O(13)^x	82.68 (6)
O(5)—Cr(2)—O(6)	108.92 (9)	O(10)^viii—K(3)—O(14)^ix	72.77 (5)
O(5)—Cr(2)—O(7)	109.32 (10)	O(12)—K(3)—O(12)^ix	66.62 (6)
O(6)—Cr(2)—O(7)	109.72 (10)	O(12)—K(3)—O(13)^x	74.55 (6)
O(8)—Cr(3)—O(9)	109.26 (9)	O(12)—K(3)—O(14)^ix	107.84 (5)
O(8)—Cr(3)—O(10)	109.99 (10)	O(12)^ix—K(3)—O(13)^x	140.27 (6)
O(8)—Cr(3)—O(11)	109.11 (8)	O(12)^ix—K(3)—O(14)^ix	53.85 (5)
O(9)—Cr(3)—O(10)	111.28 (10)	O(13)^x—K(3)—O(14)^ix	154.15 (6)
O(9)—Cr(3)—O(11)	106.47 (8)	O(1)^xi—K(4)—O(2)^xi	51.52 (5)
O(10)—Cr(3)—O(11)	110.66 (8)	O(1)^xi—K(4)—O(8)^vii	94.10 (5)
O(11)—Cr(4)—O(12)	109.64 (8)	O(1)^xi—K(4)—O(9)^xii	62.90 (5)
O(11)—Cr(4)—O(13)	109.56 (8)	O(1)^xi—K(4)—O(10)	161.66 (6)
O(11)—Cr(4)—O(14)	108.49 (8)	O(1)^xi—K(4)—O(11)^xii	108.42 (5)
O(12)—Cr(4)—O(13)	110.50 (10)	O(1)^xi—K(4)—O(12)^xiii	116.50 (5)
O(12)—Cr(4)—O(14)	108.43 (9)	O(1)^xi—K(4)—O(14)	86.44 (5)
O(13)—Cr(4)—O(14)	110.18 (10)	O(2)^xi—K(4)—O(8)^vii	64.16 (5)
O(1)—K(1)—O(3)^i	154.63 (6)	O(2)^xi—K(4)—O(9)^xii	106.97 (5)
O(1)—K(1)—O(5)	78.80 (5)	O(2)^xi—K(4)—O(10)	145.70 (5)
O(1)—K(1)—O(5)^ii	77.34 (5)	O(2)^xi—K(4)—O(11)^xii	120.07 (5)
O(1)—K(1)—O(6)^iii	102.26 (6)	O(2)^xi—K(4)—O(12)^xiii	70.49 (5)
O(1)—K(1)—O(8)^ii	111.58 (5)	O(2)^xi—K(4)—O(14)	129.20 (5)
O(1)—K(1)—O(9)^ii	64.96 (5)	O(8)^vii—K(4)—O(9)^xii	151.46 (5)
O(3)^i—K(1)—O(5)	76.65 (5)	O(8)^vii—K(4)—O(10)	92.53 (5)
O(3)^i—K(1)—O(5)^ii	89.13 (6)	O(8)^vii—K(4)—O(11)^xii	153.71 (5)
O(3)^i—K(1)—O(6)^iii	81.29 (6)	O(8)^vii—K(4)—O(12)^xiii	80.31 (5)
O(3)^i—K(1)—O(8)^ii	93.50 (5)	O(8)^vii—K(4)—O(14)	97.34 (5)
O(3)^i—K(1)—O(9)^ii	132.45 (6)	O(9)^xii—K(4)—O(10)	104.94 (5)
O(5)—K(1)—O(5)^ii	72.27 (6)	O(9)^xii—K(4)—O(11)^xii	54.80 (4)
O(5)—K(1)—O(6)^iii	83.55 (6)	O(9)^xii—K(4)—O(12)^xiii	123.95 (5)
O(5)—K(1)—O(8)^ii	168.37 (5)	O(9)^xii—K(4)—O(14)	66.36 (5)
O(5)—K(1)—O(9)^ii	135.58 (5)	O(10)—K(4)—O(11)^xii	70.31 (5)
O(5)^ii—K(1)—O(6)^iii	155.49 (5)	O(10)—K(4)—O(12)^xiii	81.48 (5)
O(5)^ii—K(1)—O(8)^ii	114.28 (5)	O(10)—K(4)—O(14)	75.75 (5)
O(5)^ii—K(1)—O(9)^ii	75.33 (5)	O(11)^xii—K(4)—O(12)^xiii	77.60 (5)
O(6)^iii—K(1)—O(8)^ii	88.91 (6)	O(11)^xii—K(4)—O(14)	97.43 (5)
O(6)^iii—K(1)—O(9)^ii	127.21 (6)	O(12)^xiii—K(4)—O(14)	157.00 (5)
O(8)^ii—K(1)—O(9)^ii	55.93 (5)	Cr(1)—O(1)—K(1)	114.36 (9)
O(1)^iv—K(2)—O(2)^v	141.70 (5)	Cr(1)—O(1)—K(2)^iv	144.21 (10)
O(1)^iv—K(2)—O(3)	69.73 (6)	Cr(1)—O(1)—K(4)^xvi	103.26 (8)
O(1)^iv—K(2)—O(4)^v	144.47 (5)	K(1)—O(1)—K(2)^iv	93.43 (5)
O(1)^iv—K(2)—O(5)^vi	77.06 (5)	K(1)—O(1)—K(4)^xvi	104.07 (6)
O(1)^iv—K(2)—O(6)^vi	123.00 (5)	K(2)^iv—O(1)—K(4)^xvi	90.42 (5)
O(1)^iv—K(2)—O(7)	74.50 (6)	Cr(1)—O(2)—K(2)^v	98.66 (8)
O(1)^iv—K(2)—O(9)^vi	61.74 (5)	Cr(1)—O(2)—K(3)^iv	154.96 (10)
O(1)^iv—K(2)—O(13)^vii	120.92 (5)	Cr(1)—O(2)—K(4)^xvi	93.82 (8)
O(1)^iv—K(2)—O(14)^vii	88.26 (5)	K(2)^v—O(2)—K(3)^iv	99.10 (6)
O(2)^v—K(2)—O(3)	109.63 (5)	K(2)^v—O(2)—K(4)^xvi	127.47 (7)
O(2)^v—K(2)—O(4)^v	55.75 (5)	K(3)^iv—O(2)—K(4)^xvi	89.25 (5)
O(2)^v—K(2)—O(5)^vi	140.92 (5)	Cr(1)—O(3)—K(1)^vi	119.64 (9)
O(2)^v—K(2)—O(6)^vi	93.86 (5)	Cr(1)—O(3)—K(2)	124.85 (10)
O(2)^v—K(2)—O(7)	68.92 (5)	K(1)^vi—O(3)—K(2)	102.31 (6)
O(2)^v—K(2)—O(9)^vi	125.21 (5)	Cr(1)—O(4)—Cr(2)	126.91 (10)
O(2)^v—K(2)—O(13)^vii	66.48 (5)	Cr(1)—O(4)—K(2)^v	98.82 (7)
O(2)^v—K(2)—O(14)^vii	67.82 (5)	Cr(2)—O(4)—K(2)^v	133.71 (8)
O(3)—K(2)—O(4)^v	74.91 (6)	Cr(2)—O(5)—K(1)	119.63 (8)
O(3)—K(2)—O(5)^vi	73.98 (5)	Cr(2)—O(5)—K(1)^ii	113.93 (8)
O(3)—K(2)—O(6)^vi	110.23 (5)	Cr(2)—O(5)—K(2)^i	108.75 (8)
O(3)—K(2)—O(7)	74.36 (5)	K(1)—O(5)—K(1)^ii	107.73 (6)
O(3)—K(2)—O(9)^vi	124.26 (5)	K(1)—O(5)—K(2)^i	104.62 (6)
O(3)—K(2)—O(13)^vii	167.72 (5)	K(1)^ii—O(5)—K(2)^i	99.99 (5)
O(3)—K(2)—O(14)^vii	140.05 (5)	Cr(2)—O(6)—K(1)^iii	146.48 (10)
O(4)^v—K(2)—O(5)^vi	90.22 (5)	Cr(2)—O(6)—K(2)^i	89.69 (8)
O(4)^v—K(2)—O(6)^vi	66.73 (5)	Cr(2)—O(6)—K(3)^xiii	102.13 (8)
O(4)^v—K(2)—O(7)	99.45 (5)	K(1)^iii—O(6)—K(2)^i	114.18 (6)
O(4)^v—K(2)—O(9)^vi	143.95 (5)	K(1)^iii—O(6)—K(3)^xiii	93.47 (5)
O(4)^v—K(2)—O(13)^vii	93.91 (5)	K(2)^i—O(6)—K(3)^xiii	106.60 (6)
O(4)^v—K(2)—O(14)^vii	122.45 (5)	Cr(2)—O(7)—K(2)	120.27 (10)
O(5)^vi—K(2)—O(6)^vi	51.36 (5)	Cr(2)—O(7)—K(3)^xiii	95.83 (8)
O(5)^vi—K(2)—O(7)	143.07 (6)	K(2)—O(7)—K(3)^xiii	95.70 (6)
O(5)^vi—K(2)—O(9)^vi	70.08 (5)	Cr(3)—O(8)—K(1)^ii	96.66 (7)
O(5)^vi—K(2)—O(13)^vii	101.46 (5)	Cr(3)—O(8)—K(3)	132.71 (9)
O(5)^vi—K(2)—O(14)^vii	134.47 (5)	Cr(3)—O(8)—K(4)^vii	117.38 (9)
O(6)^vi—K(2)—O(7)	162.49 (5)	K(1)^ii—O(8)—K(3)	92.44 (5)
O(6)^vi—K(2)—O(9)^vi	77.52 (5)	K(1)^ii—O(8)—K(4)^vii	121.40 (6)
O(6)^vi—K(2)—O(13)^vii	59.61 (4)	K(3)—O(8)—K(4)^vii	96.06 (5)
O(6)^vi—K(2)—O(14)^vii	109.72 (5)	Cr(3)—O(9)—K(1)^ii	97.89 (7)
O(7)—K(2)—O(9)^vi	114.55 (5)	Cr(3)—O(9)—K(2)^i	168.27 (10)
O(7)—K(2)—O(13)^vii	113.19 (5)	Cr(3)—O(9)—K(4)^xii	101.45 (8)
O(7)—K(2)—O(14)^vii	67.64 (5)	K(1)^ii—O(9)—K(2)^i	89.99 (5)
O(9)^vi—K(2)—O(13)^vii	62.66 (5)	K(1)^ii—O(9)—K(4)^xii	104.49 (6)
O(9)^vi—K(2)—O(14)^vii	65.04 (5)	K(2)^i—O(9)—K(4)^xii	84.85 (5)
O(13)^vii—K(2)—O(14)^vii	50.70 (5)	Cr(3)—O(10)—K(3)^xiii	122.02 (9)
O(2)^iv—K(3)—O(6)^viii	69.60 (5)	Cr(3)—O(10)—K(4)	124.82 (9)
O(2)^iv—K(3)—O(7)^viii	68.55 (5)	K(3)^xiii—O(10)—K(4)	100.79 (6)
O(2)^iv—K(3)—O(8)	68.41 (5)	Cr(3)—O(11)—Cr(4)	123.97 (8)
O(2)^iv—K(3)—O(10)^viii	138.19 (6)	Cr(3)—O(11)—K(4)^xii	96.85 (6)
O(2)^iv—K(3)—O(12)	127.25 (6)	Cr(4)—O(11)—K(4)^xii	137.82 (8)
O(2)^iv—K(3)—O(12)^ix	71.75 (5)	Cr(4)—O(12)—K(3)	131.20 (9)
O(2)^iv—K(3)—O(13)^x	131.37 (5)	Cr(4)—O(12)—K(3)^ix	96.32 (8)
O(2)^iv—K(3)—O(14)^ix	68.56 (5)	Cr(4)—O(12)—K(4)^viii	117.75 (9)
O(6)^viii—K(3)—O(7)^viii	52.22 (5)	K(3)—O(12)—K(3)^ix	113.38 (6)
O(6)^viii—K(3)—O(8)	85.14 (5)	K(3)—O(12)—K(4)^viii	98.02 (5)
O(6)^viii—K(3)—O(10)^viii	113.49 (5)	K(3)^ix—O(12)—K(4)^viii	95.00 (5)
O(6)^viii—K(3)—O(12)	139.16 (5)	Cr(4)—O(13)—K(2)^vii	88.99 (8)
O(6)^viii—K(3)—O(12)^ix	141.16 (5)	Cr(4)—O(13)—K(3)^x	138.98 (10)
O(6)^viii—K(3)—O(13)^x	69.38 (5)	K(2)^vii—O(13)—K(3)^x	106.93 (6)
O(6)^viii—K(3)—O(14)^ix	112.98 (5)	Cr(4)—O(14)—K(2)^vii	109.90 (8)
O(7)^viii—K(3)—O(8)	127.44 (5)	Cr(4)—O(14)—K(3)^ix	101.07 (7)
O(7)^viii—K(3)—O(10)^viii	81.16 (5)	Cr(4)—O(14)—K(4)	124.48 (8)
O(7)^viii—K(3)—O(12)	160.50 (5)	K(2)^vii—O(14)—K(3)^ix	104.82 (5)
O(7)^viii—K(3)—O(12)^ix	115.19 (5)	K(2)^vii—O(14)—K(4)	93.89 (5)
O(7)^viii—K(3)—O(13)^x	104.18 (6)	K(3)^ix—O(14)—K(4)	120.72 (6)
Cr(1)—O(1)—K(1)—O(3)^i	−71.97 (17)	Cr(4)—O(14)—K(4)—O(10)	−50.59 (10)
Cr(1)—O(1)—K(1)—O(5)	−57.21 (10)	Cr(4)—O(14)—K(4)—O(11)^xii	16.85 (11)
Cr(1)—O(1)—K(1)—O(5)^ii	−131.32 (10)	Cr(4)—O(14)—K(4)—O(12)^xiii	−58.86 (19)
Cr(1)—O(1)—K(1)—O(6)^iii	23.57 (11)	K(1)—O(1)—Cr(1)—O(2)	−96.48 (10)
Cr(1)—O(1)—K(1)—O(8)^ii	117.30 (9)	K(1)—O(1)—Cr(1)—O(3)	141.49 (9)
Cr(1)—O(1)—K(1)—O(9)^ii	149.13 (11)	K(1)—O(1)—Cr(1)—O(4)	20.06 (11)
Cr(1)—O(1)—K(2)^iv—O(2)^viii	−56.7 (2)	K(1)—O(1)—K(2)^iv—O(2)^viii	161.19 (7)
Cr(1)—O(1)—K(2)^iv—O(3)^iv	39.68 (16)	K(1)—O(1)—K(2)^iv—O(3)^iv	−102.47 (6)
Cr(1)—O(1)—K(2)^iv—O(4)^viii	45.5 (2)	K(1)—O(1)—K(2)^iv—O(4)^viii	−96.64 (9)
Cr(1)—O(1)—K(2)^iv—O(5)^ii	117.16 (17)	K(1)—O(1)—K(2)^iv—O(5)^ii	−25.00 (5)
Cr(1)—O(1)—K(2)^iv—O(6)^ii	141.20 (15)	K(1)—O(1)—K(2)^iv—O(6)^ii	−0.96 (8)
Cr(1)—O(1)—K(2)^iv—O(7)^iv	−39.03 (17)	K(1)—O(1)—K(2)^iv—O(7)^iv	178.82 (6)
Cr(1)—O(1)—K(2)^iv—O(9)^ii	−168.71 (19)	K(1)—O(1)—K(2)^iv—O(9)^ii	49.14 (5)
Cr(1)—O(1)—K(4)^xvi—O(2)	−9.84 (7)	K(1)—O(1)—K(4)^xvi—O(2)	109.89 (8)
Cr(1)—O(2)—K(2)^v—O(3)^v	57.90 (9)	K(1)—O(5)—Cr(2)—O(4)	−11.38 (12)
Cr(1)—O(2)—K(2)^v—O(4)	3.15 (7)	K(1)—O(5)—Cr(2)—O(6)	108.02 (10)
Cr(1)—O(2)—K(2)^v—O(5)^iii	−30.65 (13)	K(1)—O(5)—Cr(2)—O(7)	−132.09 (10)
Cr(1)—O(2)—K(2)^v—O(6)^iii	−55.18 (8)	K(1)—O(5)—K(1)^ii—O(1)^ii	−82.11 (6)
Cr(1)—O(2)—K(2)^v—O(7)^v	121.53 (9)	K(1)—O(5)—K(1)^ii—O(5)^ii	0.0000
Cr(1)—O(2)—K(2)^v—O(9)^iii	−132.63 (8)	K(1)—O(5)—K(1)^ii—O(6)^viii	9.74 (16)
Cr(1)—O(2)—K(3)^iv—O(6)^v	−39.9 (2)	K(1)—O(5)—K(1)^ii—O(8)	169.70 (5)
Cr(1)—O(2)—K(3)^iv—O(7)^v	−96.1 (3)	K(1)—O(5)—K(1)^ii—O(9)	−149.18 (7)
Cr(1)—O(2)—K(3)^iv—O(8)^iv	53.0 (2)	K(1)—O(5)—K(2)^i—O(1)^ii	84.21 (6)
Cr(1)—O(2)—K(3)^iv—O(10)^v	−142.7 (2)	K(1)—O(5)—K(2)^i—O(2)^iii	−89.70 (9)
Cr(1)—O(2)—K(3)^iv—O(12)^iv	97.1 (2)	K(1)—O(5)—K(2)^i—O(4)^iii	−62.32 (6)
Cr(1)—O(2)—K(4)^xvi—O(1)	9.59 (6)	K(1)—O(5)—K(2)^i—O(6)	−121.73 (8)
Cr(1)—O(3)—K(2)—O(1)^iv	126.12 (13)	K(1)—O(5)—K(2)^i—O(9)	148.53 (7)
Cr(1)—O(3)—K(2)—O(2)^v	−13.03 (13)	K(1)—O(5)—K(2)^i—O(13)^xii	−156.35 (5)
Cr(1)—O(3)—K(2)—O(4)^v	−57.38 (12)	K(1)—O(5)—K(2)^i—O(14)^xii	158.61 (6)
Cr(1)—O(3)—K(2)—O(5)^vi	−152.06 (13)	K(1)—O(5)^ii—Cr(2)^ii—O(4)^ii	−118.09 (8)
Cr(1)—O(3)—K(2)—O(6)^vi	−115.01 (11)	K(1)—O(5)^ii—Cr(2)^ii—O(6)^ii	122.51 (9)
Cr(1)—O(3)—K(2)—O(7)	47.22 (11)	K(1)—O(5)^ii—Cr(2)^ii—O(7)^ii	2.62 (11)
Cr(1)—O(3)—K(2)—O(9)^vi	156.57 (10)	K(1)—O(5)^ii—K(1)^ii—O(1)^ii	80.14 (6)
Cr(1)—O(3)—K(2)—O(13)^vii	−82.3 (3)	K(1)—O(5)^ii—K(1)^ii—O(5)	0.0000
Cr(1)—O(3)—K(2)—O(14)^vii	65.54 (16)	K(1)—O(5)^ii—K(1)^ii—O(6)^viii	−175.95 (7)
Cr(1)—O(4)—Cr(2)—O(5)	−66.67 (14)	K(1)—O(5)^ii—K(1)^ii—O(8)	−126.0 (3)
Cr(1)—O(4)—Cr(2)—O(6)	174.32 (12)	K(1)—O(5)^ii—K(1)^ii—O(9)	45.08 (9)
Cr(1)—O(4)—Cr(2)—O(7)	53.35 (15)	K(1)—O(6)^iii—Cr(2)^iii—O(4)^iii	8.6 (2)
Cr(1)—O(4)—K(2)^v—O(2)	−2.85 (6)	K(1)—O(6)^iii—Cr(2)^iii—O(5)^iii	127.60 (18)
Cr(1)—O(4)—K(2)^v—O(3)^v	−130.05 (8)	K(1)—O(6)^iii—Cr(2)^iii—O(7)^iii	−112.76 (18)
Cr(1)—O(4)—K(2)^v—O(5)^iii	156.62 (7)	K(1)—O(8)^ii—Cr(3)^ii—O(9)^ii	4.82 (10)
Cr(1)—O(4)—K(2)^v—O(6)^iii	109.57 (8)	K(1)—O(8)^ii—Cr(3)^ii—O(10)^ii	127.24 (8)
Cr(1)—O(4)—K(2)^v—O(7)^v	−59.19 (8)	K(1)—O(8)^ii—Cr(3)^ii—O(11)^ii	−111.21 (7)
Cr(1)—O(4)—K(2)^v—O(9)^iii	101.62 (9)	K(1)—O(8)^ii—K(3)^ii—O(2)^i	−71.19 (6)
Cr(2)—O(4)—Cr(1)—O(1)	58.87 (15)	K(1)—O(8)^ii—K(3)^ii—O(6)^iii	−1.23 (5)
Cr(2)—O(4)—Cr(1)—O(2)	176.85 (12)	K(1)—O(8)^ii—K(3)^ii—O(7)^iii	−34.14 (8)
Cr(2)—O(4)—Cr(1)—O(3)	−63.40 (15)	K(1)—O(8)^ii—K(3)^ii—O(10)^iii	130.35 (10)
Cr(2)—O(4)—K(2)^v—O(2)	−174.35 (15)	K(1)—O(8)^ii—K(3)^ii—O(12)^ii	144.45 (6)
Cr(2)—O(4)—K(2)^v—O(3)^v	58.45 (12)	K(1)—O(9)^ii—Cr(3)^ii—O(8)^ii	−4.88 (10)
Cr(2)—O(4)—K(2)^v—O(5)^iii	−14.88 (12)	K(1)—O(9)^ii—Cr(3)^ii—O(10)^ii	−126.52 (8)
Cr(2)—O(4)—K(2)^v—O(6)^iii	−61.93 (11)	K(1)—O(9)^ii—Cr(3)^ii—O(11)^ii	112.82 (7)
Cr(2)—O(4)—K(2)^v—O(7)^v	129.31 (12)	K(2)—O(1)^iv—Cr(1)^iv—O(2)^iv	−125.76 (16)
Cr(2)—O(4)—K(2)^v—O(9)^iii	−69.88 (15)	K(2)—O(1)^iv—Cr(1)^iv—O(3)^iv	−3.7 (2)
Cr(2)—O(5)—K(1)—O(1)	52.06 (10)	K(2)—O(1)^iv—Cr(1)^iv—O(4)^iv	117.70 (16)
Cr(2)—O(5)—K(1)—O(3)^i	−134.38 (11)	K(2)—O(1)^iv—K(1)^iv—O(3)^xvii	−84.84 (14)
Cr(2)—O(5)—K(1)—O(5)^ii	132.20 (13)	K(2)—O(1)^iv—K(1)^iv—O(5)^vi	−25.48 (5)
Cr(2)—O(5)—K(1)—O(6)^iii	−51.85 (10)	K(2)—O(1)^iv—K(1)^iv—O(5)^iv	−99.59 (6)
Cr(2)—O(5)—K(1)—O(8)^ii	−101.8 (3)	K(2)—O(1)^iv—K(1)^iv—O(6)^xviii	179.62 (5)
Cr(2)—O(5)—K(1)—O(9)^ii	87.12 (12)	K(2)—O(1)^iv—K(1)^iv—O(8)^vi	85.89 (6)
Cr(2)—O(5)—K(1)^ii—O(1)^ii	142.68 (9)	K(2)—O(1)^iv—K(1)^iv—O(9)^vi	54.06 (5)
Cr(2)—O(5)—K(1)^ii—O(5)^ii	−135.21 (12)	K(2)—O(2)^v—Cr(1)^v—O(1)^v	−114.54 (8)
Cr(2)—O(5)—K(1)^ii—O(6)^viii	−125.48 (13)	K(2)—O(2)^v—Cr(1)^v—O(3)^v	123.31 (9)
Cr(2)—O(5)—K(1)^ii—O(8)	34.49 (10)	K(2)—O(2)^v—Cr(1)^v—O(4)^v	4.35 (9)
Cr(2)—O(5)—K(1)^ii—O(9)	75.61 (9)	K(2)—O(3)—Cr(1)—O(1)	−130.64 (11)
Cr(2)—O(5)—K(2)^i—O(1)^ii	−146.88 (9)	K(2)—O(3)—Cr(1)—O(2)	108.40 (12)
Cr(2)—O(5)—K(2)^i—O(2)^iii	39.21 (13)	K(2)—O(3)—Cr(1)—O(4)	−8.76 (14)
Cr(2)—O(5)—K(2)^i—O(4)^iii	66.59 (9)	K(2)—O(4)^v—Cr(1)^v—O(1)^v	113.45 (8)
Cr(2)—O(5)—K(2)^i—O(6)	7.18 (7)	K(2)—O(4)^v—Cr(1)^v—O(2)^v	−4.53 (10)
Cr(2)—O(5)—K(2)^i—O(9)	−82.56 (9)	K(2)—O(4)^v—Cr(1)^v—O(3)^v	−124.28 (9)
Cr(2)—O(5)—K(2)^i—O(13)^xii	−27.44 (9)	K(2)—O(4)^v—Cr(2)^v—O(5)^v	−102.80 (12)
Cr(2)—O(5)—K(2)^i—O(14)^xii	−72.49 (11)	K(2)—O(4)^v—Cr(2)^v—O(6)^v	16.21 (15)
Cr(2)—O(6)—K(1)^iii—O(1)^iii	131.21 (18)	K(2)—O(4)^v—Cr(2)^v—O(7)^v	137.17 (12)
Cr(2)—O(6)—K(1)^iii—O(5)^iii	54.19 (19)	K(2)—O(7)—Cr(2)—O(4)	23.68 (13)
Cr(2)—O(6)—K(2)^i—O(1)^ii	23.73 (10)	K(2)—O(7)—Cr(2)—O(5)	143.43 (9)
Cr(2)—O(6)—K(2)^i—O(2)^iii	−167.25 (7)	K(2)—O(7)—Cr(2)—O(6)	−97.18 (11)
Cr(2)—O(6)—K(2)^i—O(4)^iii	−117.26 (8)	K(2)—O(7)—K(3)^xiii—O(2)^v	39.12 (5)
Cr(2)—O(6)—K(2)^i—O(5)	−6.83 (6)	K(2)—O(7)—K(3)^xiii—O(6)	119.36 (8)
Cr(2)—O(6)—K(2)^i—O(9)	67.52 (7)	K(2)—O(7)—K(3)^xiii—O(10)	−111.52 (6)
Cr(2)—O(6)—K(2)^i—O(13)^xii	132.97 (9)	K(2)—O(13)^vii—Cr(4)^vii—O(11)^vii	123.32 (7)
Cr(2)—O(6)—K(2)^i—O(14)^xii	124.95 (7)	K(2)—O(13)^vii—Cr(4)^vii—O(12)^vii	−115.77 (8)
Cr(2)—O(6)—K(3)^xiii—O(2)^v	80.10 (9)	K(2)—O(13)^vii—Cr(4)^vii—O(14)^vii	4.03 (9)
Cr(2)—O(6)—K(3)^xiii—O(7)	1.95 (7)	K(2)—O(13)^vii—K(3)^xix—O(2)^xx	66.63 (9)
Cr(2)—O(6)—K(3)^xiii—O(10)	−54.76 (10)	K(2)—O(13)^vii—K(3)^xix—O(6)^vi	32.51 (5)
Cr(2)—O(7)—K(2)—O(1)^iv	−128.55 (12)	K(2)—O(13)^vii—K(3)^xix—O(7)^vi	−7.11 (7)
Cr(2)—O(7)—K(2)—O(2)^v	63.05 (11)	K(2)—O(13)^vii—K(3)^xix—O(10)^vi	−86.02 (6)
Cr(2)—O(7)—K(2)—O(3)	−55.75 (11)	K(2)—O(14)^vii—Cr(4)^vii—O(11)^vii	−125.07 (7)
Cr(2)—O(7)—K(2)—O(4)^v	15.55 (12)	K(2)—O(14)^vii—Cr(4)^vii—O(12)^vii	115.92 (8)
Cr(2)—O(7)—K(2)—O(5)^vi	−87.63 (14)	K(2)—O(14)^vii—Cr(4)^vii—O(13)^vii	−5.13 (11)
Cr(2)—O(7)—K(2)—O(6)^vi	52.1 (2)	K(2)—O(14)^vii—K(3)^xiii—O(2)^v	−35.26 (6)
Cr(2)—O(7)—K(2)—O(9)^vi	−176.73 (10)	K(2)—O(14)^vii—K(3)^xiii—O(6)	19.76 (7)
Cr(2)—O(7)—K(2)—O(13)^vii	113.97 (11)	K(2)—O(14)^vii—K(3)^xiii—O(7)	40.33 (5)
Cr(2)—O(7)—K(2)—O(14)^vii	136.85 (12)	K(2)—O(14)^vii—K(3)^xiii—O(10)	128.52 (6)
Cr(2)—O(7)—K(3)^xiii—O(2)^v	−82.17 (8)	K(2)—O(14)^vii—K(4)^vii—O(8)	−101.24 (5)
Cr(2)—O(7)—K(3)^xiii—O(6)	−1.92 (6)	K(2)—O(14)^vii—K(4)^vii—O(9)^vi	54.34 (5)
Cr(2)—O(7)—K(3)^xiii—O(10)	127.19 (9)	K(2)—O(14)^vii—K(4)^vii—O(10)^vii	168.01 (6)
Cr(3)—O(8)—K(1)^ii—O(1)^ii	−32.06 (9)	K(2)—O(14)^vii—K(4)^vii—O(11)^vi	100.58 (5)
Cr(3)—O(8)—K(1)^ii—O(5)	53.34 (9)	K(2)—O(14)^vii—K(4)^vii—O(12)^ix	176.29 (12)
Cr(3)—O(8)—K(1)^ii—O(5)^ii	175.7 (2)	K(3)—O(2)^iv—Cr(1)^iv—O(1)^iv	110.7 (2)
Cr(3)—O(8)—K(1)^ii—O(6)^viii	−134.83 (8)	K(3)—O(2)^iv—Cr(1)^iv—O(3)^iv	−11.4 (3)
Cr(3)—O(8)—K(1)^ii—O(9)	3.16 (7)	K(3)—O(2)^iv—Cr(1)^iv—O(4)^iv	−130.4 (2)
Cr(3)—O(8)—K(3)—O(2)^iv	172.57 (14)	K(3)—O(2)^iv—K(2)^viii—O(1)^xxi	22.53 (11)
Cr(3)—O(8)—K(3)—O(6)^viii	102.61 (12)	K(3)—O(2)^iv—K(2)^viii—O(13)^ix	−88.15 (6)
Cr(3)—O(8)—K(3)—O(7)^viii	135.53 (11)	K(3)—O(2)^iv—K(2)^viii—O(14)^ix	−32.80 (5)
Cr(3)—O(8)—K(3)—O(10)^viii	−29.0 (2)	K(3)—O(8)—Cr(3)—O(9)	−104.39 (13)
Cr(3)—O(8)—K(3)—O(12)	−43.06 (12)	K(3)—O(8)—Cr(3)—O(10)	133.20 (12)
Cr(3)—O(8)—K(3)—O(12)^ix	−112.29 (13)	K(3)—O(8)—Cr(3)—O(11)	11.64 (14)
Cr(3)—O(8)—K(3)—O(13)^x	32.84 (12)	K(3)—O(8)—K(1)^ii—O(1)^ii	101.45 (5)
Cr(3)—O(8)—K(3)—O(14)^ix	−143.18 (11)	K(3)—O(8)—K(1)^ii—O(5)	−173.15 (5)
Cr(3)—O(8)—K(4)^vii—O(9)^vi	−90.04 (13)	K(3)—O(8)—K(1)^ii—O(5)^ii	−50.8 (3)
Cr(3)—O(8)—K(4)^vii—O(10)^vii	38.36 (10)	K(3)—O(8)—K(1)^ii—O(6)^viii	−1.32 (5)
Cr(3)—O(8)—K(4)^vii—O(11)^vi	86.13 (15)	K(3)—O(8)—K(1)^ii—O(9)	136.68 (7)
Cr(3)—O(8)—K(4)^vii—O(12)^ix	119.27 (10)	K(3)—O(8)—K(4)^vii—O(9)^vi	124.55 (10)
Cr(3)—O(8)—K(4)^vii—O(14)^vii	−37.59 (10)	K(3)—O(8)—K(4)^vii—O(10)^vii	−107.05 (6)
Cr(3)—O(9)—K(1)^ii—O(1)^ii	140.51 (10)	K(3)—O(8)—K(4)^vii—O(11)^vi	−59.28 (13)
Cr(3)—O(9)—K(1)^ii—O(5)	−136.83 (9)	K(3)—O(8)—K(4)^vii—O(12)^ix	−26.14 (5)
Cr(3)—O(9)—K(1)^ii—O(5)^ii	178.97 (7)	K(3)—O(8)—K(4)^vii—O(14)^vii	177.00 (5)
Cr(3)—O(9)—K(1)^ii—O(6)^viii	53.97 (11)	K(3)—O(10)^viii—Cr(3)^viii—O(8)^viii	96.76 (12)
Cr(3)—O(9)—K(1)^ii—O(8)	−3.19 (7)	K(3)—O(10)^viii—Cr(3)^viii—O(9)^viii	−24.46 (14)
Cr(3)—O(9)—K(2)^i—O(1)^ii	−176.8 (5)	K(3)—O(10)^viii—Cr(3)^viii—O(11)^viii	−142.62 (9)
Cr(3)—O(9)—K(2)^i—O(2)^iii	−41.5 (5)	K(3)—O(10)^viii—K(4)^viii—O(8)^ix	−75.31 (6)
Cr(3)—O(9)—K(2)^i—O(4)^iii	36.9 (5)	K(3)—O(10)^viii—K(4)^viii—O(9)^x	127.49 (6)
Cr(3)—O(9)—K(2)^i—O(5)	97.5 (4)	K(3)—O(10)^viii—K(4)^viii—O(11)^x	84.31 (6)
Cr(3)—O(9)—K(2)^i—O(6)	44.4 (4)	K(3)—O(10)^viii—K(4)^viii—O(12)	4.50 (6)
Cr(3)—O(9)—K(2)^i—O(13)^xii	−17.6 (4)	K(3)—O(12)—Cr(4)—O(11)	−5.33 (14)
Cr(3)—O(9)—K(2)^i—O(14)^xii	−74.6 (4)	K(3)—O(12)—Cr(4)—O(13)	115.53 (12)
Cr(3)—O(9)—K(4)^xii—O(8)^i	−177.70 (8)	K(3)—O(12)—Cr(4)—O(14)	−123.61 (11)
Cr(3)—O(9)—K(4)^xii—O(10)^xii	56.42 (9)	K(3)—O(12)—K(3)^ix—O(8)^ix	−75.66 (6)
Cr(3)—O(9)—K(4)^xii—O(11)	4.37 (6)	K(3)—O(12)—K(3)^ix—O(12)^ix	0.0000
Cr(3)—O(9)—K(4)^xii—O(12)^x	−33.28 (10)	K(3)—O(12)—K(3)^ix—O(13)^vi	−13.02 (11)
Cr(3)—O(9)—K(4)^xii—O(14)^xii	123.17 (9)	K(3)—O(12)—K(3)^ix—O(14)	136.82 (8)
Cr(3)—O(10)—K(3)^xiii—O(2)^v	−85.16 (14)	K(3)—O(12)—K(4)^viii—O(8)^ix	89.79 (6)
Cr(3)—O(10)—K(3)^xiii—O(6)	0.00 (14)	K(3)—O(12)—K(4)^viii—O(9)^x	−106.59 (6)
Cr(3)—O(10)—K(3)^xiii—O(7)	−41.96 (11)	K(3)—O(12)—K(4)^viii—O(11)^x	−75.86 (5)
Cr(3)—O(10)—K(4)—O(1)^xi	31.4 (3)	K(3)—O(12)^ix—Cr(4)^ix—O(11)^ix	−123.54 (6)
Cr(3)—O(10)—K(4)—O(2)^xi	−172.71 (9)	K(3)—O(12)^ix—Cr(4)^ix—O(13)^ix	115.60 (9)
Cr(3)—O(10)—K(4)—O(8)^vii	142.49 (12)	K(3)—O(12)^ix—Cr(4)^ix—O(14)^ix	−5.25 (9)
Cr(3)—O(10)—K(4)—O(9)^xii	−14.71 (13)	K(3)—O(12)^ix—K(3)^ix—O(8)^ix	83.66 (6)
Cr(3)—O(10)—K(4)—O(11)^xii	−57.89 (12)	K(3)—O(12)^ix—K(3)^ix—O(12)	0.0000
Cr(3)—O(10)—K(4)—O(12)^xiii	−137.70 (13)	K(3)—O(12)^ix—K(3)^ix—O(13)^vi	171.40 (7)
Cr(3)—O(10)—K(4)—O(14)	45.56 (12)	K(3)—O(12)^ix—K(3)^ix—O(14)	−35.48 (7)
Cr(3)—O(11)—Cr(4)—O(12)	−59.66 (13)	K(3)—O(13)^x—Cr(4)^x—O(11)^x	8.26 (19)
Cr(3)—O(11)—Cr(4)—O(13)	178.91 (12)	K(3)—O(13)^x—Cr(4)^x—O(12)^x	129.17 (15)
Cr(3)—O(11)—Cr(4)—O(14)	58.59 (13)	K(3)—O(13)^x—Cr(4)^x—O(14)^x	−111.02 (16)
Cr(3)—O(11)—K(4)^xii—O(8)^i	178.32 (9)	K(3)—O(14)^ix—Cr(4)^ix—O(11)^ix	124.56 (7)
Cr(3)—O(11)—K(4)^xii—O(9)	−3.92 (6)	K(3)—O(14)^ix—Cr(4)^ix—O(12)^ix	5.55 (9)
Cr(3)—O(11)—K(4)^xii—O(10)^xii	−129.90 (8)	K(3)—O(14)^ix—Cr(4)^ix—O(13)^ix	−115.50 (9)
Cr(3)—O(11)—K(4)^xii—O(12)^x	144.83 (7)	K(3)—O(14)^ix—K(2)^viii—O(1)^xxi	−115.54 (6)
Cr(3)—O(11)—K(4)^xii—O(14)^xii	−57.98 (7)	K(3)—O(14)^ix—K(2)^viii—O(13)^ix	110.90 (7)
Cr(4)—O(11)—Cr(3)—O(8)	57.10 (13)	K(3)—O(14)^ix—K(4)^ix—O(8)^viii	8.56 (8)
Cr(4)—O(11)—Cr(3)—O(9)	174.90 (11)	K(3)—O(14)^ix—K(4)^ix—O(9)^xviii	164.14 (8)
Cr(4)—O(11)—Cr(3)—O(10)	−64.05 (14)	K(3)—O(14)^ix—K(4)^ix—O(10)^ix	−82.19 (7)
Cr(4)—O(11)—K(4)^xii—O(8)^i	12.2 (2)	K(3)—O(14)^ix—K(4)^ix—O(11)^xviii	−149.63 (6)
Cr(4)—O(11)—K(4)^xii—O(9)	−170.03 (14)	K(3)—O(14)^ix—K(4)^ix—O(12)^xxii	−73.92 (15)
Cr(4)—O(11)—K(4)^xii—O(10)^xii	63.98 (12)	K(4)—O(8)^vii—Cr(3)^vii—O(9)^vii	−125.81 (10)
Cr(4)—O(11)—K(4)^xii—O(12)^x	−21.29 (12)	K(4)—O(8)^vii—Cr(3)^vii—O(10)^vii	−3.40 (12)
Cr(4)—O(11)—K(4)^xii—O(14)^xii	135.91 (12)	K(4)—O(8)^vii—Cr(3)^vii—O(11)^vii	118.16 (9)
Cr(4)—O(12)—K(3)—O(2)^iv	81.76 (14)	K(4)—O(8)^vii—K(3)^vii—O(6)^xxiii	120.71 (6)
Cr(4)—O(12)—K(3)—O(6)^viii	−20.36 (17)	K(4)—O(8)^vii—K(3)^vii—O(7)^xxiii	87.79 (7)
Cr(4)—O(12)—K(3)—O(7)^viii	−137.77 (13)	K(4)—O(8)^vii—K(3)^vii—O(10)^xxiii	−107.72 (10)
Cr(4)—O(12)—K(3)—O(8)	38.87 (12)	K(4)—O(8)^vii—K(3)^vii—O(12)^xiii	−24.40 (5)
Cr(4)—O(12)—K(3)—O(10)^viii	−134.13 (13)	K(4)—O(8)^vii—K(3)^vii—O(12)^vii	−93.62 (6)
Cr(4)—O(12)—K(3)—O(12)^ix	122.53 (15)	K(4)—O(8)^vii—K(3)^vii—O(13)^xix	−169.53 (6)
Cr(4)—O(12)—K(3)—O(13)^x	−48.88 (12)	K(4)—O(8)^vii—K(3)^vii—O(14)^xiii	6.50 (8)
Cr(4)—O(12)—K(3)—O(14)^ix	158.01 (11)	K(4)—O(9)^xii—Cr(3)^xii—O(8)^xii	−111.49 (8)
Cr(4)—O(12)—K(3)^ix—O(8)^ix	144.00 (8)	K(4)—O(9)^xii—Cr(3)^xii—O(10)^xii	126.87 (9)
Cr(4)—O(12)—K(3)^ix—O(12)^ix	−140.34 (11)	K(4)—O(9)^xii—Cr(3)^xii—O(11)^xii	6.21 (9)
Cr(4)—O(12)—K(3)^ix—O(13)^vi	−153.36 (7)	K(4)—O(10)—Cr(3)—O(8)	−128.48 (11)
Cr(4)—O(12)—K(3)^ix—O(14)	−3.52 (6)	K(4)—O(10)—Cr(3)—O(9)	110.30 (11)
Cr(4)—O(12)—K(4)^viii—O(8)^ix	−124.54 (10)	K(4)—O(10)—Cr(3)—O(11)	−7.86 (14)
Cr(4)—O(12)—K(4)^viii—O(9)^x	39.08 (12)	K(4)—O(10)—K(3)^xiii—O(2)^v	131.24 (7)
Cr(4)—O(12)—K(4)^viii—O(11)^x	69.81 (10)	K(4)—O(10)—K(3)^xiii—O(6)	−143.60 (5)
Cr(4)—O(13)—K(2)^vii—O(3)^vii	−150.9 (2)	K(4)—O(10)—K(3)^xiii—O(7)	174.44 (6)
Cr(4)—O(13)—K(2)^vii—O(5)^xii	142.13 (8)	K(4)—O(11)^xii—Cr(3)^xii—O(8)^xii	111.69 (8)
Cr(4)—O(13)—K(2)^vii—O(6)^xii	173.09 (10)	K(4)—O(11)^xii—Cr(3)^xii—O(9)^xii	−6.10 (9)
Cr(4)—O(13)—K(2)^vii—O(7)^vii	−24.82 (9)	K(4)—O(11)^xii—Cr(3)^xii—O(10)^xii	−127.16 (8)
Cr(4)—O(13)—K(2)^vii—O(9)^xii	81.88 (8)	K(4)—O(11)^xii—Cr(4)^xii—O(12)^xii	−103.64 (12)
Cr(4)—O(13)—K(2)^vii—O(14)	2.87 (6)	K(4)—O(11)^xii—Cr(4)^xii—O(13)^xii	17.79 (15)
Cr(4)—O(13)—K(3)^x—O(8)^x	131.36 (17)	K(4)—O(11)^xii—Cr(4)^xii—O(14)^xii	138.11 (11)
Cr(4)—O(13)—K(3)^x—O(12)^i	70.6 (2)	K(4)—O(14)—Cr(4)—O(11)	15.43 (12)
Cr(4)—O(13)—K(3)^x—O(12)^x	58.19 (16)	K(4)—O(14)—Cr(4)—O(12)	134.44 (10)
Cr(4)—O(13)—K(3)^x—O(14)^i	−40.9 (3)	K(4)—O(14)—Cr(4)—O(13)	−104.51 (11)
Cr(4)—O(14)—K(2)^vii—O(3)^vii	168.58 (7)	K(4)—O(14)—K(2)^vii—O(3)^vii	−62.51 (9)
Cr(4)—O(14)—K(2)^vii—O(5)^xii	−66.68 (11)	K(4)—O(14)—K(2)^vii—O(5)^xii	62.23 (8)
Cr(4)—O(14)—K(2)^vii—O(6)^xii	−11.97 (9)	K(4)—O(14)—K(2)^vii—O(6)^xii	116.94 (5)
Cr(4)—O(14)—K(2)^vii—O(7)^vii	149.47 (10)	K(4)—O(14)—K(2)^vii—O(7)^vii	−81.61 (6)
Cr(4)—O(14)—K(2)^vii—O(9)^xii	−77.14 (8)	K(4)—O(14)—K(2)^vii—O(9)^xii	51.78 (5)
Cr(4)—O(14)—K(2)^vii—O(13)	−3.02 (6)	K(4)—O(14)—K(2)^vii—O(13)	125.89 (7)
Cr(4)—O(14)—K(3)^ix—O(8)^ix	−34.79 (10)	K(4)—O(14)—K(3)^ix—O(8)^ix	−176.73 (6)
Cr(4)—O(14)—K(3)^ix—O(12)	3.57 (6)	K(4)—O(14)—K(3)^ix—O(12)	−138.38 (9)
Cr(4)—O(14)—K(3)^ix—O(12)^ix	44.85 (9)	K(4)—O(14)—K(3)^ix—O(12)^ix	−97.09 (7)
Cr(4)—O(14)—K(3)^ix—O(13)^vi	136.14 (11)	K(4)—O(14)—K(3)^ix—O(13)^vi	−5.81 (17)
Cr(4)—O(14)—K(4)—O(1)^xi	124.98 (10)	O(5)—K(1)—O(5)^ii—K(1)^ii	0.0000
Cr(4)—O(14)—K(4)—O(2)^xi	156.18 (8)	O(5)—K(1)^ii—O(5)^ii—K(1)	0.0000
Cr(4)—O(14)—K(4)—O(8)^vii	−141.34 (10)	O(12)—K(3)—O(12)^ix—K(3)^ix	0.0000
Cr(4)—O(14)—K(4)—O(9)^xii	63.08 (10)	O(12)—K(3)^ix—O(12)^ix—K(3)	0.0000

Symmetry codes: (i) x+1, y, z; (ii) −x+2, −y+1, −z+1; (iii) −x+2, −y+2, −z+1; (iv) −x+1, −y+1, −z+1; (v) −x+1, −y+2, −z+1; (vi) x−1, y, z; (vii) −x+1, −y+1, −z; (viii) x, y−1, z; (ix) −x+1, −y, −z; (x) −x+2, −y, −z; (xi) x, y, z−1; (xii) −x+2, −y+1, −z; (xiii) x, y+1, z; (xiv) x, y−1, z−1; (xv) x, y+1, z+1; (xvi) x, y, z+1; (xvii) −x, −y+1, −z+1; (xviii) x−1, y−1, z; (xix) x−1, y+1, z; (xx) −x, −y+2, −z+1; (xxi) −x+1, −y, −z+1; (xxii) −x+1, −y−1, −z; (xxiii) −x+1, −y+2, −z.

(2)

Crystal data

2KCr2O7	Z = 4
Mr = 294.18	F(000) = 568.00
Triclinic, P1	Dx = 2.691 Mg m^−3 Dm = 2.676 Mg m^−3 Dm measured by ?
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 7.3837 (8) Å	Cell parameters from 25 reflections
b = 7.4622 (6) Å	θ = 14.0–14.7°
c = 13.3949 (12) Å	µ = 4.13 mm^−1
α = 96.204 (7)°	T = 296 K
β = 98.046 (8)°	Block, intense-orange
γ = 90.943 (8)°	0.25 × 0.20 × 0.15 mm
V = 726.12 (12) Å^3

Data collection

Nonius CAD-4 serial deiffractometer	2253 reflections with I > 1.00σ(I)
Radiation source: sealed X-ray tube	Rint = 0.020
Graphite monochromator	θmax = 25.0°, θmin = 1.5°
ω–2θ scans	h = 0→8
Absorption correction: part of the refinement model (ΔF) DIFABS (Walker & Stuart, 1983)	k = −8→8
Tmin = 0.386, Tmax = 0.538	l = −15→15
2759 measured reflections	3 standard reflections every 300 reflections
2544 independent reflections	intensity decay: 0.0%

Refinement

Refinement on F^2	0 constraints
Least-squares matrix: full	w = 4Fo^2/[σ^2(I) + (0.020I)^2]
R[F^2 > 2σ(F^2)] = 0.029	(Δ/σ)max = 0.008
wR(F^2) = 0.042	Δρmax = 0.61 e Å^−3
S = 1.86	Δρmin = −0.45 e Å^−3
2544 reflections	Extinction correction: Zachariasen (1967), equ(3) Acta Cryst.(1968) A24, p213.
200 parameters	Extinction coefficient: 3.6 x 10^-7
0 restraints

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Cr(1)	0.59177 (7)	0.76886 (7)	0.60724 (4)	0.01927 (15)
Cr(2)	0.79290 (7)	0.80680 (7)	0.41370 (4)	0.01877 (15)
Cr(3)	0.81703 (7)	0.42577 (7)	0.11362 (4)	0.01890 (15)
Cr(4)	0.81338 (7)	0.15247 (7)	−0.08318 (4)	0.01837 (15)
K(1)	1.10346 (12)	0.66920 (11)	0.64034 (6)	0.0309 (2)
K(2)	0.25016 (11)	0.76715 (10)	0.34962 (6)	0.0289 (2)
K(3)	0.66245 (10)	−0.08530 (10)	0.15847 (6)	0.0247 (2)
K(4)	0.69492 (12)	0.65228 (11)	−0.13585 (6)	0.0316 (2)
O(1)	0.7196 (4)	0.6125 (4)	0.6490 (2)	0.0343 (8)
O(2)	0.5547 (4)	0.9100 (4)	0.7017 (2)	0.0351 (8)
O(3)	0.4024 (4)	0.6852 (4)	0.5451 (2)	0.0359 (8)
O(4)	0.7076 (4)	0.8928 (3)	0.52682 (19)	0.0301 (7)
O(5)	0.9591 (3)	0.6753 (3)	0.44298 (19)	0.0289 (7)
O(6)	0.8688 (4)	0.9716 (3)	0.3608 (2)	0.0325 (7)
O(7)	0.6344 (4)	0.6951 (4)	0.3365 (2)	0.0358 (8)
O(8)	0.6890 (4)	0.2929 (3)	0.1638 (2)	0.0300 (7)
O(9)	0.9756 (4)	0.5180 (4)	0.20002 (18)	0.0302 (7)
O(10)	0.6949 (4)	0.5755 (4)	0.0612 (2)	0.0340 (7)
O(11)	0.9293 (3)	0.2959 (3)	0.02274 (18)	0.0242 (6)
O(12)	0.6919 (4)	−0.0003 (3)	−0.04335 (19)	0.0293 (7)
O(13)	0.9604 (4)	0.0612 (4)	−0.1486 (2)	0.0363 (8)
O(14)	0.6774 (3)	0.2736 (3)	−0.15180 (19)	0.0274 (7)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Cr(1)	0.0186 (3)	0.0208 (3)	0.0189 (3)	0.0025 (2)	0.0038 (2)	0.0025 (2)
Cr(2)	0.0179 (3)	0.0206 (3)	0.0188 (3)	0.0021 (2)	0.0039 (2)	0.0048 (2)
Cr(3)	0.0187 (3)	0.0184 (3)	0.0188 (3)	−0.0013 (2)	0.0003 (2)	0.0019 (2)
Cr(4)	0.0167 (3)	0.0183 (3)	0.0200 (3)	0.0003 (2)	0.0030 (2)	0.0010 (2)
K(1)	0.0371 (5)	0.0311 (5)	0.0243 (4)	−0.0073 (4)	0.0021 (3)	0.0055 (3)
K(2)	0.0322 (5)	0.0268 (4)	0.0291 (4)	−0.0030 (3)	0.0099 (3)	0.0020 (3)
K(3)	0.0234 (4)	0.0244 (4)	0.0259 (4)	−0.0003 (3)	0.0036 (3)	0.0008 (3)
K(4)	0.0374 (5)	0.0296 (4)	0.0278 (4)	0.0103 (4)	0.0039 (4)	0.0022 (3)
O(1)	0.0320 (14)	0.0309 (14)	0.040 (2)	0.0097 (12)	−0.0003 (12)	0.0100 (12)
O(2)	0.042 (2)	0.0346 (15)	0.0304 (15)	0.0037 (12)	0.0152 (12)	−0.0026 (12)
O(3)	0.0274 (14)	0.045 (2)	0.0334 (15)	−0.0046 (12)	−0.0022 (12)	0.0064 (13)
O(4)	0.0368 (15)	0.0248 (13)	0.0320 (14)	0.0016 (11)	0.0165 (12)	0.0028 (11)
O(5)	0.0276 (13)	0.0316 (14)	0.0285 (14)	0.0115 (11)	0.0034 (11)	0.0064 (11)
O(6)	0.041 (2)	0.0273 (14)	0.0318 (14)	−0.0026 (11)	0.0097 (12)	0.0098 (11)
O(7)	0.0287 (14)	0.043 (2)	0.0331 (15)	−0.0042 (12)	−0.0020 (12)	0.0007 (12)
O(8)	0.0298 (14)	0.0291 (14)	0.032 (2)	−0.0064 (11)	0.0081 (11)	0.0036 (11)
O(9)	0.030 (2)	0.0358 (14)	0.0221 (13)	−0.0102 (11)	0.0000 (11)	−0.0012 (11)
O(10)	0.0416 (16)	0.0291 (14)	0.0313 (15)	0.0130 (12)	0.0024 (12)	0.0048 (11)
O(11)	0.0182 (12)	0.027 (2)	0.026 (2)	−0.0010 (10)	−0.0002 (10)	−0.0014 (10)
O(12)	0.036 (2)	0.0245 (13)	0.0276 (14)	−0.0072 (11)	0.0047 (11)	0.0036 (11)
O(13)	0.0291 (15)	0.0411 (16)	0.039 (2)	0.0070 (12)	0.0130 (12)	−0.0064 (13)
O(14)	0.0263 (13)	0.0250 (13)	0.030 (2)	0.0020 (10)	−0.0017 (11)	0.0047 (10)

Geometric parameters (Å, º)

Cr(1)—O(1)	1.611 (2)	K(2)—O(3)	2.835 (3)
Cr(1)—O(2)	1.613 (3)	K(2)—O(4)^v	2.863 (3)
Cr(1)—O(3)	1.604 (3)	K(2)—O(5)^vi	2.746 (3)
Cr(1)—O(4)	1.788 (3)	K(2)—O(6)^vi	3.239 (3)
Cr(2)—O(4)	1.782 (2)	K(2)—O(7)	2.922 (3)
Cr(2)—O(5)	1.615 (2)	K(2)—O(9)^vi	3.085 (3)
Cr(2)—O(6)	1.614 (3)	K(2)—O(13)^vii	3.308 (3)
Cr(2)—O(7)	1.605 (3)	K(2)—O(14)^vii	2.762 (3)
Cr(3)—O(8)	1.618 (3)	K(3)—O(2)^iv	2.859 (3)
Cr(3)—O(9)	1.615 (2)	K(3)—O(6)^viii	2.902 (3)
Cr(3)—O(10)	1.606 (3)	K(3)—O(7)^viii	3.064 (3)
Cr(3)—O(11)	1.778 (2)	K(3)—O(8)	2.818 (3)
Cr(4)—O(11)	1.787 (2)	K(3)—O(10)^viii	2.749 (3)
Cr(4)—O(12)	1.619 (3)	K(3)—O(12)	2.879 (3)
Cr(4)—O(13)	1.604 (3)	K(3)—O(12)^ix	2.961 (3)
Cr(4)—O(14)	1.619 (2)	K(3)—O(13)^x	2.810 (3)
K(1)—O(1)	2.879 (3)	K(3)—O(14)^ix	2.842 (3)
K(1)—O(3)^i	2.707 (3)	K(4)—O(1)^xi	2.896 (3)
K(1)—O(5)	2.714 (3)	K(4)—O(2)^xi	3.138 (3)
K(1)—O(5)^ii	2.695 (3)	K(4)—O(8)^vii	2.849 (3)
K(1)—O(6)^iii	2.687 (3)	K(4)—O(9)^xii	2.953 (3)
K(1)—O(8)^ii	2.831 (3)	K(4)—O(10)	2.761 (3)
K(1)—O(9)^ii	2.799 (3)	K(4)—O(11)^xii	2.967 (2)
K(2)—O(1)^iv	2.847 (3)	K(4)—O(12)^xiii	2.752 (3)
K(2)—O(2)^v	2.979 (3)	K(4)—O(14)	2.810 (3)
Cr(3)···O(11)^xii	3.579 (3)	K(4)···O(1)^xi	2.896 (3)
Cr(4)···O(9)^xii	3.509 (3)	K(4)···O(9)^xii	2.953 (3)
Cr(4)···O(2)^xiv	3.528 (3)	K(4)···O(11)^xii	2.967 (2)
K(1)···O(6)^iii	2.687 (3)	K(4)···O(2)^xi	3.138 (3)
K(1)···O(5)^ii	2.695 (3)	O(1)···O(9)^ii	3.053 (4)
K(1)···O(3)^i	2.707 (3)	O(1)···O(3)^iv	3.246 (4)
K(1)···O(5)	2.714 (3)	O(1)···O(5)^ii	3.489 (4)
K(1)···O(9)^ii	2.799 (3)	O(1)···O(7)^iv	3.490 (4)
K(1)···O(8)^ii	2.831 (3)	O(2)···O(8)^iv	3.192 (4)
K(1)···O(1)	2.879 (3)	O(2)···O(14)^xv	3.210 (4)
K(1)···O(7)^ii	3.379 (3)	O(2)···O(12)^xv	3.414 (4)
K(2)···O(5)^vi	2.746 (3)	O(2)···O(13)^xv	3.462 (4)
K(2)···O(14)^vii	2.762 (3)	O(3)···O(3)^iv	3.328 (6)
K(2)···O(3)	2.835 (3)	O(3)···O(5)^vi	3.362 (4)
K(2)···O(1)^iv	2.847 (3)	O(3)···O(7)^iv	3.422 (4)
K(2)···O(4)^v	2.863 (3)	O(4)···O(6)^iii	3.365 (4)
K(2)···O(7)	2.922 (3)	O(5)···O(5)^ii	3.194 (5)
K(2)···O(2)^v	2.979 (3)	O(5)···O(9)	3.358 (4)
K(2)···O(9)^vi	3.085 (3)	O(5)···O(6)^iii	3.595 (4)
K(2)···O(6)^vi	3.239 (3)	O(6)···O(13)^xii	3.254 (4)
K(2)···O(13)^vii	3.308 (3)	O(7)···O(14)^vii	3.166 (4)
K(3)···O(10)^viii	2.749 (3)	O(7)···O(9)	3.509 (4)
K(3)···O(13)^x	2.810 (3)	O(9)···O(14)^xii	3.154 (4)
K(3)···O(8)	2.818 (3)	O(9)···O(13)^xii	3.326 (4)
K(3)···O(14)^ix	2.842 (3)	O(9)···O(11)^xii	3.574 (4)
K(3)···O(2)^iv	2.859 (3)	O(10)···O(10)^vii	3.227 (6)
K(3)···O(12)	2.879 (3)	O(10)···O(11)^xii	3.303 (4)
K(3)···O(6)^viii	2.902 (3)	O(10)···O(14)^vii	3.322 (4)
K(3)···O(12)^ix	2.961 (3)	O(10)···O(12)^xiii	3.597 (4)
K(3)···O(7)^viii	3.064 (3)	O(11)···O(11)^xii	3.349 (5)
K(4)···O(12)^xiii	2.752 (3)	O(11)···O(13)^x	3.357 (4)
K(4)···O(10)	2.761 (3)	O(11)···O(12)^x	3.590 (3)
K(4)···O(14)	2.810 (3)	O(12)···O(13)^x	3.443 (4)
K(4)···O(8)^vii	2.849 (3)
O(1)—Cr(1)—O(2)	109.10 (14)	O(8)—K(3)—O(10)^viii	150.49 (8)
O(1)—Cr(1)—O(3)	110.92 (14)	O(8)—K(3)—O(12)	71.89 (7)
O(1)—Cr(1)—O(4)	110.10 (13)	O(8)—K(3)—O(12)^ix	77.32 (7)
O(2)—Cr(1)—O(3)	110.61 (14)	O(8)—K(3)—O(13)^x	83.26 (8)
O(2)—Cr(1)—O(4)	106.72 (13)	O(8)—K(3)—O(14)^ix	122.29 (8)
O(3)—Cr(1)—O(4)	109.31 (13)	O(10)^viii—K(3)—O(12)	79.42 (8)
O(4)—Cr(2)—O(5)	108.71 (13)	O(10)^viii—K(3)—O(12)^ix	97.79 (8)
O(4)—Cr(2)—O(6)	109.59 (13)	O(10)^viii—K(3)—O(13)^x	82.56 (8)
O(4)—Cr(2)—O(7)	110.38 (13)	O(10)^viii—K(3)—O(14)^ix	72.90 (8)
O(5)—Cr(2)—O(6)	109.00 (14)	O(12)—K(3)—O(12)^ix	66.64 (9)
O(5)—Cr(2)—O(7)	109.32 (14)	O(12)—K(3)—O(14)^ix	107.91 (8)
O(6)—Cr(2)—O(7)	109.81 (14)	O(12)^ix—K(3)—O(13)^x	140.25 (8)
O(8)—Cr(3)—O(9)	109.34 (13)	O(12)^ix—K(3)—O(14)^ix	53.80 (7)
O(8)—Cr(3)—O(10)	109.99 (14)	O(13)^x—K(3)—O(14)^ix	154.17 (8)
O(8)—Cr(3)—O(11)	109.07 (12)	O(1)^xi—K(4)—O(2)^xi	51.42 (7)
O(9)—Cr(3)—O(10)	111.19 (14)	O(1)^xi—K(4)—O(8)^vii	94.13 (8)
O(9)—Cr(3)—O(11)	106.57 (12)	O(1)^xi—K(4)—O(9)^xii	62.92 (7)
O(10)—Cr(3)—O(11)	110.59 (12)	O(1)^xi—K(4)—O(10)	161.77 (8)
O(11)—Cr(4)—O(12)	109.63 (12)	O(1)^xi—K(4)—O(11)^xii	108.39 (8)
O(11)—Cr(4)—O(13)	109.52 (13)	O(1)^xi—K(4)—O(12)^xiii	116.42 (8)
O(11)—Cr(4)—O(14)	108.40 (12)	O(1)^xi—K(4)—O(14)	86.43 (8)
O(12)—Cr(4)—O(13)	110.65 (14)	O(2)^xi—K(4)—O(8)^vii	64.22 (7)
O(12)—Cr(4)—O(14)	108.50 (13)	O(2)^xi—K(4)—O(9)^xii	106.90 (7)
O(13)—Cr(4)—O(14)	110.10 (14)	O(2)^xi—K(4)—O(10)	145.71 (7)
O(1)—K(1)—O(3)^i	154.54 (8)	O(2)^xi—K(4)—O(11)^xii	120.08 (8)
O(1)—K(1)—O(5)	78.67 (8)	O(2)^xi—K(4)—O(12)^xiii	70.50 (7)
O(1)—K(1)—O(5)^ii	77.42 (8)	O(2)^xi—K(4)—O(14)	129.17 (8)
O(1)—K(1)—O(6)^iii	102.20 (8)	O(8)^vii—K(4)—O(9)^xii	151.53 (8)
O(1)—K(1)—O(8)^ii	111.60 (8)	O(8)^vii—K(4)—O(10)	92.48 (8)
O(1)—K(1)—O(9)^ii	65.04 (8)	O(8)^vii—K(4)—O(11)^xii	153.70 (8)
O(3)^i—K(1)—O(5)	76.68 (8)	O(8)^vii—K(4)—O(12)^xiii	80.28 (8)
O(3)^i—K(1)—O(5)^ii	89.10 (8)	O(8)^vii—K(4)—O(14)	97.45 (8)
O(3)^i—K(1)—O(6)^iii	81.26 (8)	O(9)^xii—K(4)—O(10)	104.98 (8)
O(3)^i—K(1)—O(8)^ii	93.58 (8)	O(9)^xii—K(4)—O(11)^xii	54.73 (7)
O(3)^i—K(1)—O(9)^ii	132.50 (9)	O(9)^xii—K(4)—O(12)^xiii	123.90 (8)
O(5)—K(1)—O(5)^ii	72.39 (9)	O(9)^xii—K(4)—O(14)	66.29 (7)
O(5)—K(1)—O(6)^iii	83.46 (8)	O(10)—K(4)—O(11)^xii	70.30 (8)
O(5)—K(1)—O(8)^ii	168.45 (8)	O(10)—K(4)—O(12)^xiii	81.45 (8)
O(5)—K(1)—O(9)^ii	135.57 (8)	O(10)—K(4)—O(14)	75.86 (8)
O(5)^ii—K(1)—O(6)^iii	155.50 (8)	O(11)^xii—K(4)—O(12)^xiii	77.66 (7)
O(5)^ii—K(1)—O(8)^ii	114.18 (8)	O(11)^xii—K(4)—O(14)	97.32 (7)
O(5)^ii—K(1)—O(9)^ii	75.32 (8)	O(12)^xiii—K(4)—O(14)	157.10 (8)
O(6)^iii—K(1)—O(8)^ii	89.00 (8)	Cr(1)—O(1)—K(1)	114.41 (13)
O(6)^iii—K(1)—O(9)^ii	127.24 (8)	Cr(1)—O(1)—K(2)^iv	144.37 (15)
O(8)^ii—K(1)—O(9)^ii	55.87 (7)	Cr(1)—O(1)—K(4)^xvi	103.20 (12)
O(1)^iv—K(2)—O(2)^v	141.69 (8)	K(1)—O(1)—K(2)^iv	93.35 (8)
O(1)^iv—K(2)—O(3)	69.68 (8)	K(1)—O(1)—K(4)^xvi	103.98 (9)
O(1)^iv—K(2)—O(4)^v	144.48 (8)	K(2)^iv—O(1)—K(4)^xvi	90.34 (8)
O(1)^iv—K(2)—O(5)^vi	77.17 (8)	Cr(1)—O(2)—K(2)^v	98.71 (12)
O(1)^iv—K(2)—O(6)^vi	123.12 (8)	Cr(1)—O(2)—K(3)^iv	155.11 (15)
O(1)^iv—K(2)—O(7)	74.43 (8)	Cr(1)—O(2)—K(4)^xvi	93.77 (11)
O(1)^iv—K(2)—O(9)^vi	61.81 (8)	K(2)^v—O(2)—K(3)^iv	99.02 (8)
O(1)^iv—K(2)—O(13)^vii	120.91 (8)	K(2)^v—O(2)—K(4)^xvi	127.43 (10)
O(1)^iv—K(2)—O(14)^vii	88.32 (8)	K(3)^iv—O(2)—K(4)^xvi	89.19 (7)
O(2)^v—K(2)—O(3)	109.58 (8)	Cr(1)—O(3)—K(1)^vi	119.56 (14)
O(2)^v—K(2)—O(4)^v	55.70 (7)	Cr(1)—O(3)—K(2)	124.99 (14)
O(2)^v—K(2)—O(5)^vi	140.81 (8)	K(1)^vi—O(3)—K(2)	102.34 (9)
O(2)^v—K(2)—O(6)^vi	93.78 (7)	Cr(1)—O(4)—Cr(2)	127.29 (14)
O(2)^v—K(2)—O(7)	68.95 (8)	Cr(1)—O(4)—K(2)^v	98.65 (10)
O(2)^v—K(2)—O(9)^vi	125.27 (8)	Cr(2)—O(4)—K(2)^v	133.52 (12)
O(2)^v—K(2)—O(13)^vii	66.59 (8)	Cr(2)—O(5)—K(1)	119.78 (12)
O(2)^v—K(2)—O(14)^vii	67.89 (7)	Cr(2)—O(5)—K(1)^ii	113.98 (13)
O(3)—K(2)—O(4)^v	74.97 (8)	Cr(2)—O(5)—K(2)^i	108.81 (12)
O(3)—K(2)—O(5)^vi	74.07 (8)	K(1)—O(5)—K(1)^ii	107.61 (9)
O(3)—K(2)—O(6)^vi	110.23 (8)	K(1)—O(5)—K(2)^i	104.51 (9)
O(3)—K(2)—O(7)	74.43 (8)	K(1)^ii—O(5)—K(2)^i	99.89 (8)
O(3)—K(2)—O(9)^vi	124.25 (8)	Cr(2)—O(6)—K(1)^iii	146.63 (15)
O(3)—K(2)—O(13)^vii	167.76 (8)	Cr(2)—O(6)—K(2)^i	89.56 (11)
O(3)—K(2)—O(14)^vii	140.12 (8)	Cr(2)—O(6)—K(3)^xiii	101.94 (12)
O(4)^v—K(2)—O(5)^vi	90.16 (8)	K(1)^iii—O(6)—K(2)^i	114.28 (9)
O(4)^v—K(2)—O(6)^vi	66.60 (7)	K(1)^iii—O(6)—K(3)^xiii	93.54 (8)
O(4)^v—K(2)—O(7)	99.58 (8)	K(2)^i—O(6)—K(3)^xiii	106.53 (8)
O(4)^v—K(2)—O(9)^vi	143.87 (8)	Cr(2)—O(7)—K(2)	120.15 (14)
O(4)^v—K(2)—O(13)^vii	93.91 (7)	Cr(2)—O(7)—K(3)^xiii	95.82 (12)
O(4)^v—K(2)—O(14)^vii	122.42 (8)	K(2)—O(7)—K(3)^xiii	95.73 (8)
O(5)^vi—K(2)—O(7)	143.20 (8)	Cr(3)—O(8)—K(1)^ii	96.60 (11)
O(5)^vi—K(2)—O(9)^vi	70.05 (7)	Cr(3)—O(8)—K(3)	132.76 (13)
O(5)^vi—K(2)—O(13)^vii	101.33 (7)	Cr(3)—O(8)—K(4)^vii	117.50 (13)
O(5)^vi—K(2)—O(14)^vii	134.38 (8)	K(1)^ii—O(8)—K(3)	92.33 (8)
O(6)^vi—K(2)—O(9)^vi	77.57 (7)	K(1)^ii—O(8)—K(4)^vii	121.29 (9)
O(6)^vi—K(2)—O(13)^vii	59.60 (6)	K(3)—O(8)—K(4)^vii	96.09 (8)
O(6)^vi—K(2)—O(14)^vii	109.65 (7)	Cr(3)—O(9)—K(1)^ii	97.92 (11)
O(7)—K(2)—O(9)^vi	114.49 (8)	Cr(3)—O(9)—K(2)^i	168.24 (14)
O(7)—K(2)—O(13)^vii	113.16 (7)	Cr(3)—O(9)—K(4)^xii	101.45 (11)
O(7)—K(2)—O(14)^vii	67.64 (8)	K(1)^ii—O(9)—K(2)^i	90.01 (7)
O(9)^vi—K(2)—O(13)^vii	62.59 (7)	K(1)^ii—O(9)—K(4)^xii	104.54 (9)
O(9)^vi—K(2)—O(14)^vii	65.01 (7)	K(2)^i—O(9)—K(4)^xii	84.82 (7)
O(13)^vii—K(2)—O(14)^vii	50.62 (7)	Cr(3)—O(10)—K(3)^xiii	122.12 (14)
O(2)^iv—K(3)—O(7)^viii	68.57 (8)	Cr(3)—O(10)—K(4)	124.79 (13)
O(2)^iv—K(3)—O(8)	68.42 (8)	K(3)^xiii—O(10)—K(4)	100.88 (9)
O(2)^iv—K(3)—O(10)^viii	138.29 (9)	Cr(3)—O(11)—Cr(4)	124.19 (13)
O(2)^iv—K(3)—O(12)	127.24 (8)	Cr(3)—O(11)—K(4)^xii	96.82 (9)
O(2)^iv—K(3)—O(12)^ix	71.80 (8)	Cr(4)—O(11)—K(4)^xii	137.61 (11)
O(2)^iv—K(3)—O(13)^x	131.38 (8)	Cr(4)—O(12)—K(3)	131.24 (13)
O(2)^iv—K(3)—O(14)^ix	68.55 (8)	Cr(4)—O(12)—K(3)^ix	96.38 (11)
O(6)^viii—K(3)—O(7)^viii	52.32 (7)	Cr(4)—O(12)—K(4)^viii	117.77 (13)
O(6)^viii—K(3)—O(8)	85.11 (8)	K(3)—O(12)—K(3)^ix	113.36 (9)
O(6)^viii—K(3)—O(10)^viii	113.57 (8)	K(3)—O(12)—K(4)^viii	97.92 (8)
O(6)^viii—K(3)—O(12)	139.07 (8)	K(3)^ix—O(12)—K(4)^viii	95.01 (8)
O(6)^viii—K(3)—O(12)^ix	141.10 (8)	Cr(4)—O(13)—K(2)^vii	88.94 (11)
O(6)^viii—K(3)—O(13)^x	69.44 (8)	Cr(4)—O(13)—K(3)^x	139.24 (15)
O(6)^viii—K(3)—O(14)^ix	113.01 (8)	K(2)^vii—O(13)—K(3)^x	106.93 (9)
O(7)^viii—K(3)—O(8)	127.53 (8)	Cr(4)—O(14)—K(2)^vii	110.09 (12)
O(7)^viii—K(3)—O(10)^viii	81.16 (8)	Cr(4)—O(14)—K(3)^ix	101.01 (11)
O(7)^viii—K(3)—O(12)	160.54 (7)	Cr(4)—O(14)—K(4)	124.55 (12)
O(7)^viii—K(3)—O(12)^ix	115.18 (7)	K(2)^vii—O(14)—K(3)^ix	104.82 (8)
O(7)^viii—K(3)—O(13)^x	104.20 (8)	K(2)^vii—O(14)—K(4)	93.94 (8)
O(7)^viii—K(3)—O(14)^ix	64.72 (7)	K(3)^ix—O(14)—K(4)	120.54 (9)
Cr(1)—O(1)—K(1)—O(3)^i	−71.9 (3)	Cr(4)—O(14)—K(4)—O(9)^xii	63.35 (15)
Cr(1)—O(1)—K(1)—O(5)	−57.30 (14)	Cr(4)—O(14)—K(4)—O(10)	−50.34 (15)
Cr(1)—O(1)—K(1)—O(5)^ii	−131.54 (15)	Cr(4)—O(14)—K(4)—O(11)^xii	17.16 (16)
Cr(1)—O(1)—K(1)—O(6)^iii	23.37 (16)	Cr(4)—O(14)—K(4)—O(12)^xiii	−58.4 (3)
Cr(1)—O(1)—K(1)—O(8)^ii	117.17 (14)	K(1)—O(1)—Cr(1)—O(2)	−96.42 (15)
Cr(1)—O(1)—K(1)—O(9)^ii	148.98 (17)	K(1)—O(1)—Cr(1)—O(3)	141.49 (14)
Cr(1)—O(1)—K(2)^iv—O(2)^viii	−56.3 (3)	K(1)—O(1)—Cr(1)—O(4)	20.38 (17)
Cr(1)—O(1)—K(2)^iv—O(3)^iv	39.9 (2)	K(1)—O(1)—K(2)^iv—O(2)^viii	161.27 (10)
Cr(1)—O(1)—K(2)^iv—O(4)^viii	45.7 (3)	K(1)—O(1)—K(2)^iv—O(3)^iv	−102.54 (9)
Cr(1)—O(1)—K(2)^iv—O(5)^ii	117.4 (3)	K(1)—O(1)—K(2)^iv—O(4)^viii	−96.69 (13)
Cr(1)—O(1)—K(2)^iv—O(6)^ii	141.3 (2)	K(1)—O(1)—K(2)^iv—O(5)^ii	−25.00 (7)
Cr(1)—O(1)—K(2)^iv—O(7)^iv	−39.0 (3)	K(1)—O(1)—K(2)^iv—O(6)^ii	−1.07 (11)
Cr(1)—O(1)—K(2)^iv—O(9)^ii	−168.6 (3)	K(1)—O(1)—K(2)^iv—O(7)^iv	178.65 (9)
Cr(1)—O(1)—K(4)^xvi—K(1)	−119.72 (16)	K(1)—O(1)—K(2)^iv—O(9)^ii	49.04 (7)
Cr(1)—O(1)—K(4)^xvi—O(2)	−9.77 (10)	K(1)—O(1)—K(4)^xvi—O(2)	109.96 (11)
Cr(1)—O(2)—K(2)^v—O(3)^v	58.00 (14)	K(1)—O(5)—Cr(2)—O(4)	−11.56 (17)
Cr(1)—O(2)—K(2)^v—O(4)	3.17 (10)	K(1)—O(5)—Cr(2)—O(6)	107.85 (15)
Cr(1)—O(2)—K(2)^v—O(5)^iii	−30.59 (19)	K(1)—O(5)—Cr(2)—O(7)	−132.11 (15)
Cr(1)—O(2)—K(2)^v—O(6)^iii	−55.04 (12)	K(1)—O(5)—K(1)^ii—O(1)^ii	−81.93 (9)
Cr(1)—O(2)—K(2)^v—O(7)^v	121.75 (13)	K(1)—O(5)—K(1)^ii—O(5)^ii	0.0000
Cr(1)—O(2)—K(2)^v—O(9)^iii	−132.48 (11)	K(1)—O(5)—K(1)^ii—O(6)^viii	9.9 (2)
Cr(1)—O(2)—K(3)^iv—O(6)^v	−40.0 (3)	K(1)—O(5)—K(1)^ii—O(8)	169.82 (8)
Cr(1)—O(2)—K(3)^iv—O(7)^v	−96.4 (4)	K(1)—O(5)—K(1)^ii—O(9)	−149.07 (10)
Cr(1)—O(2)—K(3)^iv—O(8)^iv	52.8 (3)	K(1)—O(5)—K(2)^i—O(1)^ii	84.03 (9)
Cr(1)—O(2)—K(3)^iv—O(10)^v	−142.8 (3)	K(1)—O(5)—K(2)^i—O(2)^iii	−89.82 (13)
Cr(1)—O(2)—K(3)^iv—O(12)^iv	96.8 (4)	K(1)—O(5)—K(2)^i—O(4)^iii	−62.50 (9)
Cr(1)—O(2)—K(4)^xvi—O(1)	9.52 (10)	K(1)—O(5)—K(2)^i—O(6)	−121.77 (12)
Cr(1)—O(3)—K(2)—O(1)^iv	126.04 (18)	K(1)—O(5)—K(2)^i—O(9)	148.38 (10)
Cr(1)—O(3)—K(2)—O(2)^v	−13.11 (19)	K(1)—O(5)—K(2)^i—O(13)^xii	−156.52 (8)
Cr(1)—O(3)—K(2)—O(4)^v	−57.47 (16)	K(1)—O(5)—K(2)^i—O(14)^xii	158.66 (9)
Cr(1)—O(3)—K(2)—O(5)^vi	−152.04 (19)	K(1)—O(5)^ii—Cr(2)^ii—O(4)^ii	−117.96 (13)
Cr(1)—O(3)—K(2)—O(6)^vi	−114.98 (16)	K(1)—O(5)^ii—Cr(2)^ii—O(6)^ii	122.64 (14)
Cr(1)—O(3)—K(2)—O(7)	47.22 (16)	K(1)—O(5)^ii—Cr(2)^ii—O(7)^ii	2.60 (17)
Cr(1)—O(3)—K(2)—O(9)^vi	156.54 (14)	K(1)—O(5)^ii—K(1)^ii—O(1)^ii	80.25 (9)
Cr(1)—O(3)—K(2)—O(13)^vii	−82.7 (4)	K(1)—O(5)^ii—K(1)^ii—O(5)	0.0000
Cr(1)—O(3)—K(2)—O(14)^vii	65.5 (2)	K(1)—O(5)^ii—K(1)^ii—O(6)^viii	−175.87 (10)
Cr(1)—O(4)—Cr(2)—O(5)	−66.7 (2)	K(1)—O(5)^ii—K(1)^ii—O(8)	−126.3 (4)
Cr(1)—O(4)—Cr(2)—O(6)	174.30 (17)	K(1)—O(5)^ii—K(1)^ii—O(9)	45.27 (14)
Cr(1)—O(4)—Cr(2)—O(7)	53.2 (2)	K(1)—O(6)^iii—Cr(2)^iii—O(4)^iii	8.8 (3)
Cr(1)—O(4)—K(2)^v—O(2)	−2.86 (9)	K(1)—O(6)^iii—Cr(2)^iii—O(5)^iii	127.6 (3)
Cr(1)—O(4)—K(2)^v—O(3)^v	−129.96 (12)	K(1)—O(6)^iii—Cr(2)^iii—O(7)^iii	−112.6 (3)
Cr(1)—O(4)—K(2)^v—O(5)^iii	156.59 (11)	K(1)—O(8)^ii—Cr(3)^ii—K(3)^xvii	87.54 (8)
Cr(1)—O(4)—K(2)^v—O(6)^iii	109.61 (12)	K(1)—O(8)^ii—Cr(3)^ii—O(9)^ii	4.83 (14)
Cr(1)—O(4)—K(2)^v—O(7)^v	−59.07 (11)	K(1)—O(8)^ii—Cr(3)^ii—O(10)^ii	127.20 (11)
Cr(1)—O(4)—K(2)^v—O(9)^iii	101.67 (14)	K(1)—O(8)^ii—Cr(3)^ii—O(11)^ii	−111.35 (10)
Cr(2)—O(4)—Cr(1)—O(1)	58.7 (2)	K(1)—O(8)^ii—K(3)^ii—O(2)^i	−71.05 (8)
Cr(2)—O(4)—Cr(1)—O(2)	177.00 (18)	K(1)—O(8)^ii—K(3)^ii—O(6)^iii	−1.19 (8)
Cr(2)—O(4)—Cr(1)—O(3)	−63.3 (2)	K(1)—O(8)^ii—K(3)^ii—O(7)^iii	−34.12 (11)
Cr(2)—O(4)—K(2)^v—O(2)	−174.6 (2)	K(1)—O(8)^ii—K(3)^ii—O(10)^iii	130.38 (15)
Cr(2)—O(4)—K(2)^v—O(3)^v	58.32 (17)	K(1)—O(8)^ii—K(3)^ii—O(12)^ii	144.47 (9)
Cr(2)—O(4)—K(2)^v—O(5)^iii	−15.13 (18)	K(1)—O(9)^ii—Cr(3)^ii—O(8)^ii	−4.90 (14)
Cr(2)—O(4)—K(2)^v—O(6)^iii	−62.10 (17)	K(1)—O(9)^ii—Cr(3)^ii—O(10)^ii	−126.55 (12)
Cr(2)—O(4)—K(2)^v—O(7)^v	129.22 (17)	K(1)—O(9)^ii—Cr(3)^ii—O(11)^ii	112.86 (11)
Cr(2)—O(4)—K(2)^v—O(9)^iii	−70.0 (2)	K(2)—O(1)^iv—Cr(1)^iv—O(2)^iv	−125.6 (2)
Cr(2)—O(5)—K(1)—O(1)	52.06 (15)	K(2)—O(1)^iv—Cr(1)^iv—O(3)^iv	−3.5 (3)
Cr(2)—O(5)—K(1)—O(3)^i	−134.36 (16)	K(2)—O(1)^iv—Cr(1)^iv—O(4)^iv	117.6 (2)
Cr(2)—O(5)—K(1)—O(5)^ii	132.3 (2)	K(2)—O(1)^iv—K(1)^iv—O(3)^xviii	−85.1 (2)
Cr(2)—O(5)—K(1)—O(6)^iii	−51.82 (15)	K(2)—O(1)^iv—K(1)^iv—O(5)^vi	−25.48 (7)
Cr(2)—O(5)—K(1)—O(8)^ii	−101.4 (4)	K(2)—O(1)^iv—K(1)^iv—O(5)^iv	−99.73 (8)
Cr(2)—O(5)—K(1)—O(9)^ii	87.04 (18)	K(2)—O(1)^iv—K(1)^iv—O(6)^xix	179.61 (8)
Cr(2)—O(5)—K(1)^ii—O(1)^ii	142.70 (14)	K(2)—O(1)^iv—K(1)^iv—O(8)^vi	85.81 (9)
Cr(2)—O(5)—K(1)^ii—O(5)^ii	−135.37 (18)	K(2)—O(1)^iv—K(1)^iv—O(9)^vi	54.00 (8)
Cr(2)—O(5)—K(1)^ii—O(6)^viii	−125.43 (19)	K(2)—O(2)^v—Cr(1)^v—O(1)^v	−114.55 (12)
Cr(2)—O(5)—K(1)^ii—O(8)	34.45 (16)	K(2)—O(2)^v—Cr(1)^v—O(3)^v	123.18 (12)
Cr(2)—O(5)—K(1)^ii—O(9)	75.56 (13)	K(2)—O(2)^v—Cr(1)^v—O(4)^v	4.37 (14)
Cr(2)—O(5)—K(2)^i—O(1)^ii	−146.91 (14)	K(2)—O(3)—Cr(1)—O(1)	−130.49 (16)
Cr(2)—O(5)—K(2)^i—O(2)^iii	39.2 (2)	K(2)—O(3)—Cr(1)—O(2)	108.31 (17)
Cr(2)—O(5)—K(2)^i—O(4)^iii	66.56 (13)	K(2)—O(3)—Cr(1)—O(4)	−8.9 (2)
Cr(2)—O(5)—K(2)^i—O(6)	7.29 (10)	K(2)—O(4)^v—Cr(1)^v—O(1)^v	113.72 (12)
Cr(2)—O(5)—K(2)^i—O(9)	−82.56 (13)	K(2)—O(4)^v—Cr(1)^v—O(2)^v	−4.55 (14)
Cr(2)—O(5)—K(2)^i—O(13)^xii	−27.46 (14)	K(2)—O(4)^v—Cr(1)^v—O(3)^v	−124.20 (12)
Cr(2)—O(5)—K(2)^i—O(14)^xii	−72.28 (16)	K(2)—O(4)^v—Cr(2)^v—O(5)^v	−103.02 (18)
Cr(2)—O(6)—K(1)^iii—O(1)^iii	131.3 (3)	K(2)—O(4)^v—Cr(2)^v—O(6)^v	16.0 (2)
Cr(2)—O(6)—K(1)^iii—O(5)^iii	54.4 (3)	K(2)—O(4)^v—Cr(2)^v—O(7)^v	137.08 (17)
Cr(2)—O(6)—K(2)^i—O(1)^ii	23.53 (15)	K(2)—O(7)—Cr(2)—O(4)	23.82 (18)
Cr(2)—O(6)—K(2)^i—O(2)^iii	−167.33 (11)	K(2)—O(7)—Cr(2)—O(5)	143.35 (14)
Cr(2)—O(6)—K(2)^i—O(4)^iii	−117.42 (12)	K(2)—O(7)—Cr(2)—O(6)	−97.11 (16)
Cr(2)—O(6)—K(2)^i—O(5)	−6.91 (9)	K(2)—O(7)—K(3)^xiii—O(2)^v	39.13 (8)
Cr(2)—O(6)—K(2)^i—O(9)	67.36 (11)	K(2)—O(7)—K(3)^xiii—O(6)	119.19 (11)
Cr(2)—O(6)—K(2)^i—O(13)^xii	132.70 (13)	K(2)—O(7)—K(3)^xiii—O(10)	−111.64 (9)
Cr(2)—O(6)—K(2)^i—O(14)^xii	124.82 (11)	K(2)—O(13)^vii—Cr(4)^vii—O(11)^vii	123.32 (10)
Cr(2)—O(6)—K(3)^xiii—O(2)^v	80.23 (13)	K(2)—O(13)^vii—Cr(4)^vii—O(12)^vii	−115.71 (11)
Cr(2)—O(6)—K(3)^xiii—O(7)	2.00 (9)	K(2)—O(13)^vii—Cr(4)^vii—O(14)^vii	4.22 (13)
Cr(2)—O(6)—K(3)^xiii—O(10)	−54.71 (15)	K(2)—O(13)^vii—K(3)^xx—O(2)^xxi	66.53 (13)
Cr(2)—O(7)—K(2)—O(1)^iv	−128.45 (17)	K(2)—O(13)^vii—K(3)^xx—O(6)^vi	32.54 (7)
Cr(2)—O(7)—K(2)—O(2)^v	62.99 (15)	K(2)—O(13)^vii—K(3)^xx—O(7)^vi	−7.25 (9)
Cr(2)—O(7)—K(2)—O(3)	−55.70 (15)	K(2)—O(13)^vii—K(3)^xx—O(10)^vi	−86.12 (9)
Cr(2)—O(7)—K(2)—O(4)^v	15.63 (17)	K(2)—O(14)^vii—Cr(4)^vii—O(11)^vii	−125.17 (11)
Cr(2)—O(7)—K(2)—O(5)^vi	−87.7 (2)	K(2)—O(14)^vii—Cr(4)^vii—O(12)^vii	115.83 (12)
Cr(2)—O(7)—K(2)—O(6)^vi	52.3 (3)	K(2)—O(14)^vii—Cr(4)^vii—O(13)^vii	−5.39 (16)
Cr(2)—O(7)—K(2)—O(9)^vi	−176.71 (14)	K(2)—O(14)^vii—K(3)^xiii—O(2)^v	−35.28 (8)
Cr(2)—O(7)—K(2)—O(13)^vii	114.11 (15)	K(2)—O(14)^vii—K(3)^xiii—O(6)	19.56 (10)
Cr(2)—O(7)—K(2)—O(14)^vii	136.86 (18)	K(2)—O(14)^vii—K(3)^xiii—O(7)	40.32 (8)
Cr(2)—O(7)—K(3)^xiii—O(2)^v	−82.04 (12)	K(2)—O(14)^vii—K(3)^xiii—O(10)	128.46 (9)
Cr(2)—O(7)—K(3)^xiii—O(6)	−1.98 (9)	K(2)—O(14)^vii—K(4)^vii—O(8)	−101.23 (8)
Cr(2)—O(7)—K(3)^xiii—O(10)	127.19 (12)	K(2)—O(14)^vii—K(4)^vii—O(9)^vi	54.40 (7)
Cr(3)—O(8)—K(1)^ii—O(1)^ii	−32.08 (13)	K(2)—O(14)^vii—K(4)^vii—O(10)^vii	168.08 (9)
Cr(3)—O(8)—K(1)^ii—O(5)	53.39 (13)	K(2)—O(14)^vii—K(4)^vii—O(11)^vi	100.59 (8)
Cr(3)—O(8)—K(1)^ii—O(5)^ii	176.1 (3)	K(2)—O(14)^vii—K(4)^vii—O(12)^ix	176.12 (18)
Cr(3)—O(8)—K(1)^ii—O(6)^viii	−134.81 (11)	K(3)—O(2)^iv—Cr(1)^iv—O(1)^iv	110.5 (4)
Cr(3)—O(8)—K(1)^ii—O(9)	3.17 (9)	K(3)—O(2)^iv—Cr(1)^iv—O(3)^iv	−11.8 (4)
Cr(3)—O(8)—K(3)—O(2)^iv	172.3 (2)	K(3)—O(2)^iv—Cr(1)^iv—O(4)^iv	−130.6 (3)
Cr(3)—O(8)—K(3)—O(6)^viii	102.40 (19)	K(3)—O(2)^iv—K(2)^viii—O(1)^xxii	22.75 (17)
Cr(3)—O(8)—K(3)—O(7)^viii	135.32 (16)	K(3)—O(2)^iv—K(2)^viii—O(13)^ix	−88.04 (8)
Cr(3)—O(8)—K(3)—O(10)^viii	−29.2 (3)	K(3)—O(2)^iv—K(2)^viii—O(14)^ix	−32.81 (7)
Cr(3)—O(8)—K(3)—O(12)	−43.26 (18)	K(3)—O(8)—Cr(3)—O(9)	−104.19 (19)
Cr(3)—O(8)—K(3)—O(12)^ix	−112.53 (19)	K(3)—O(8)—Cr(3)—O(10)	133.43 (17)
Cr(3)—O(8)—K(3)—O(13)^x	32.57 (18)	K(3)—O(8)—Cr(3)—O(11)	12.0 (2)
Cr(3)—O(8)—K(3)—O(14)^ix	−143.40 (16)	K(3)—O(8)—K(1)^ii—O(1)^ii	101.45 (8)
Cr(3)—O(8)—K(4)^vii—O(9)^vi	−89.9 (2)	K(3)—O(8)—K(1)^ii—O(5)	−173.08 (7)
Cr(3)—O(8)—K(4)^vii—O(10)^vii	38.57 (14)	K(3)—O(8)—K(1)^ii—O(5)^ii	−50.4 (4)
Cr(3)—O(8)—K(4)^vii—O(11)^vi	86.2 (2)	K(3)—O(8)—K(1)^ii—O(6)^viii	−1.28 (8)
Cr(3)—O(8)—K(4)^vii—O(12)^ix	119.46 (15)	K(3)—O(8)—K(1)^ii—O(9)	136.70 (11)
Cr(3)—O(8)—K(4)^vii—O(14)^vii	−37.49 (15)	K(3)—O(8)—K(4)^vii—O(9)^vi	124.44 (15)
Cr(3)—O(9)—K(1)^ii—O(1)^ii	140.51 (14)	K(3)—O(8)—K(4)^vii—O(10)^vii	−107.05 (8)
Cr(3)—O(9)—K(1)^ii—O(5)	−136.75 (13)	K(3)—O(8)—K(4)^vii—O(11)^vi	−59.42 (19)
Cr(3)—O(9)—K(1)^ii—O(5)^ii	178.83 (10)	K(3)—O(8)—K(4)^vii—O(12)^ix	−26.16 (8)
Cr(3)—O(9)—K(1)^ii—O(6)^viii	54.01 (16)	K(3)—O(8)—K(4)^vii—O(14)^vii	176.89 (7)
Cr(3)—O(9)—K(1)^ii—O(8)	−3.19 (9)	K(3)—O(10)^viii—Cr(3)^viii—O(8)^viii	96.73 (17)
Cr(3)—O(9)—K(2)^i—O(1)^ii	−176.6 (7)	K(3)—O(10)^viii—Cr(3)^viii—O(9)^viii	−24.5 (2)
Cr(3)—O(9)—K(2)^i—O(2)^iii	−41.2 (7)	K(3)—O(10)^viii—Cr(3)^viii—O(11)^viii	−142.73 (13)
Cr(3)—O(9)—K(2)^i—O(4)^iii	37.1 (7)	K(3)—O(10)^viii—K(4)^viii—O(8)^ix	−75.22 (9)
Cr(3)—O(9)—K(2)^i—O(5)	97.6 (7)	K(3)—O(10)^viii—K(4)^viii—O(9)^x	127.49 (8)
Cr(3)—O(9)—K(2)^i—O(6)	44.6 (7)	K(3)—O(10)^viii—K(4)^viii—O(11)^x	84.44 (9)
Cr(3)—O(9)—K(2)^i—O(13)^xii	−17.4 (7)	K(3)—O(10)^viii—K(4)^viii—O(12)	4.56 (8)
Cr(3)—O(9)—K(2)^i—O(14)^xii	−74.3 (7)	K(3)—O(12)—Cr(4)—O(11)	−5.6 (2)
Cr(3)—O(9)—K(4)^xii—O(8)^i	−177.73 (13)	K(3)—O(12)—Cr(4)—O(13)	115.33 (18)
Cr(3)—O(9)—K(4)^xii—O(10)^xii	56.29 (13)	K(3)—O(12)—Cr(4)—O(14)	−123.79 (17)
Cr(3)—O(9)—K(4)^xii—O(11)	4.36 (9)	K(3)—O(12)—K(3)^ix—O(8)^ix	−75.54 (9)
Cr(3)—O(9)—K(4)^xii—O(12)^x	−33.39 (15)	K(3)—O(12)—K(3)^ix—O(12)^ix	0.0000
Cr(3)—O(9)—K(4)^xii—O(14)^xii	123.11 (13)	K(3)—O(12)—K(3)^ix—O(13)^vi	−12.84 (16)
Cr(3)—O(10)—K(3)^xiii—O(2)^v	−84.9 (2)	K(3)—O(12)—K(3)^ix—O(14)	136.97 (12)
Cr(3)—O(10)—K(3)^xiii—O(6)	0.2 (2)	K(3)—O(12)—K(4)^viii—O(8)^ix	89.70 (8)
Cr(3)—O(10)—K(3)^xiii—O(7)	−41.85 (16)	K(3)—O(12)—K(4)^viii—O(9)^x	−106.67 (9)
Cr(3)—O(10)—K(4)—O(1)^xi	31.1 (4)	K(3)—O(12)—K(4)^viii—O(11)^x	−75.90 (8)
Cr(3)—O(10)—K(4)—O(2)^xi	−172.83 (13)	K(3)—O(12)^ix—Cr(4)^ix—O(11)^ix	−123.36 (9)
Cr(3)—O(10)—K(4)—O(8)^vii	142.34 (17)	K(3)—O(12)^ix—Cr(4)^ix—O(13)^ix	115.73 (13)
Cr(3)—O(10)—K(4)—O(9)^xii	−14.95 (19)	K(3)—O(12)^ix—Cr(4)^ix—O(14)^ix	−5.15 (13)
Cr(3)—O(10)—K(4)—O(11)^xii	−58.00 (17)	K(3)—O(12)^ix—K(3)^ix—O(8)^ix	83.66 (9)
Cr(3)—O(10)—K(4)—O(12)^xiii	−137.87 (19)	K(3)—O(12)^ix—K(3)^ix—O(12)	0.0000
Cr(3)—O(10)—K(4)—O(14)	45.28 (17)	K(3)—O(12)^ix—K(3)^ix—O(13)^vi	171.52 (10)
Cr(3)—O(11)—Cr(4)—O(12)	−59.45 (19)	K(3)—O(12)^ix—K(3)^ix—O(14)	−35.36 (10)
Cr(3)—O(11)—Cr(4)—O(13)	178.96 (17)	K(3)—O(13)^x—Cr(4)^x—O(11)^x	8.2 (3)
Cr(3)—O(11)—Cr(4)—O(14)	58.82 (19)	K(3)—O(13)^x—Cr(4)^x—O(12)^x	129.2 (2)
Cr(3)—O(11)—K(4)^xii—O(8)^i	178.35 (14)	K(3)—O(13)^x—Cr(4)^x—O(14)^x	−110.9 (2)
Cr(3)—O(11)—K(4)^xii—O(9)	−3.91 (8)	K(3)—O(14)^ix—Cr(4)^ix—O(11)^ix	124.43 (10)
Cr(3)—O(11)—K(4)^xii—O(10)^xii	−130.03 (11)	K(3)—O(14)^ix—Cr(4)^ix—O(12)^ix	5.43 (14)
Cr(3)—O(11)—K(4)^xii—O(12)^x	144.75 (11)	K(3)—O(14)^ix—Cr(4)^ix—O(13)^ix	−115.79 (13)
Cr(3)—O(11)—K(4)^xii—O(14)^xii	−57.94 (11)	K(3)—O(14)^ix—K(2)^viii—O(1)^xxii	−115.40 (8)
Cr(4)—O(11)—Cr(3)—O(8)	56.84 (19)	K(3)—O(14)^ix—K(2)^viii—O(13)^ix	111.05 (11)
Cr(4)—O(11)—Cr(3)—O(9)	174.78 (16)	K(3)—O(14)^ix—K(4)^ix—O(8)^viii	8.55 (12)
Cr(4)—O(11)—Cr(3)—O(10)	−64.2 (2)	K(3)—O(14)^ix—K(4)^ix—O(9)^xix	164.17 (12)
Cr(4)—O(11)—K(4)^xii—O(8)^i	12.3 (3)	K(3)—O(14)^ix—K(4)^ix—O(10)^ix	−82.14 (11)
Cr(4)—O(11)—K(4)^xii—O(9)	−170.0 (2)	K(3)—O(14)^ix—K(4)^ix—O(11)^xix	−149.64 (10)
Cr(4)—O(11)—K(4)^xii—O(10)^xii	63.90 (17)	K(3)—O(14)^ix—K(4)^ix—O(12)^xxiii	−74.1 (2)
Cr(4)—O(11)—K(4)^xii—O(12)^x	−21.32 (17)	K(4)—O(8)^vii—Cr(3)^vii—O(9)^vii	−125.69 (14)
Cr(4)—O(11)—K(4)^xii—O(14)^xii	135.99 (17)	K(4)—O(8)^vii—Cr(3)^vii—O(10)^vii	−3.32 (18)
Cr(4)—O(12)—K(3)—O(2)^iv	81.7 (2)	K(4)—O(8)^vii—Cr(3)^vii—O(11)^vii	118.13 (13)
Cr(4)—O(12)—K(3)—O(6)^viii	−20.1 (2)	K(4)—O(8)^vii—K(3)^vii—O(6)^xxiv	120.62 (8)
Cr(4)—O(12)—K(3)—O(7)^viii	−137.6 (2)	K(4)—O(8)^vii—K(3)^vii—O(7)^xxiv	87.69 (10)
Cr(4)—O(12)—K(3)—O(8)	38.99 (17)	K(4)—O(8)^vii—K(3)^vii—O(10)^xxiv	−107.81 (16)
Cr(4)—O(12)—K(3)—O(10)^viii	−134.01 (19)	K(4)—O(8)^vii—K(3)^vii—O(12)^xiii	−24.45 (7)
Cr(4)—O(12)—K(3)—O(12)^ix	122.6 (2)	K(4)—O(8)^vii—K(3)^vii—O(12)^vii	−93.72 (9)
Cr(4)—O(12)—K(3)—O(13)^x	−48.88 (17)	K(4)—O(8)^vii—K(3)^vii—O(13)^xx	−169.55 (9)
Cr(4)—O(12)—K(3)—O(14)^ix	158.00 (16)	K(4)—O(8)^vii—K(3)^vii—O(14)^xiii	6.42 (12)
Cr(4)—O(12)—K(3)^ix—O(8)^ix	144.04 (12)	K(4)—O(9)^xii—Cr(3)^xii—O(8)^xii	−111.56 (12)
Cr(4)—O(12)—K(3)^ix—O(12)^ix	−140.42 (16)	K(4)—O(9)^xii—Cr(3)^xii—O(10)^xii	126.79 (13)
Cr(4)—O(12)—K(3)^ix—O(13)^vi	−153.26 (11)	K(4)—O(9)^xii—Cr(3)^xii—O(11)^xii	6.20 (13)
Cr(4)—O(12)—K(3)^ix—O(14)	−3.45 (9)	K(4)—O(10)—Cr(3)—O(8)	−128.25 (16)
Cr(4)—O(12)—K(4)^viii—O(8)^ix	−124.67 (15)	K(4)—O(10)—Cr(3)—O(9)	110.48 (16)
Cr(4)—O(12)—K(4)^viii—O(9)^x	38.95 (18)	K(4)—O(10)—Cr(3)—O(11)	−7.7 (2)
Cr(4)—O(12)—K(4)^viii—O(11)^x	69.73 (14)	K(4)—O(10)—K(3)^xiii—O(2)^v	131.30 (11)
Cr(4)—O(13)—K(2)^vii—O(3)^vii	−151.0 (3)	K(4)—O(10)—K(3)^xiii—O(6)	−143.59 (8)
Cr(4)—O(13)—K(2)^vii—O(5)^xii	142.33 (11)	K(4)—O(10)—K(3)^xiii—O(7)	174.39 (10)
Cr(4)—O(13)—K(2)^vii—O(6)^xii	173.39 (14)	K(4)—O(11)^xii—Cr(3)^xii—O(8)^xii	111.84 (11)
Cr(4)—O(13)—K(2)^vii—O(7)^vii	−24.56 (13)	K(4)—O(11)^xii—Cr(3)^xii—O(9)^xii	−6.09 (13)
Cr(4)—O(13)—K(2)^vii—O(9)^xii	82.06 (11)	K(4)—O(11)^xii—Cr(3)^xii—O(10)^xii	−127.07 (12)
Cr(4)—O(13)—K(2)^vii—O(14)	3.01 (9)	K(4)—O(11)^xii—Cr(4)^xii—O(12)^xii	−103.75 (18)
Cr(4)—O(13)—K(3)^x—O(8)^x	131.3 (2)	K(4)—O(11)^xii—Cr(4)^xii—O(13)^xii	17.8 (2)
Cr(4)—O(13)—K(3)^x—O(12)^i	70.5 (3)	K(4)—O(11)^xii—Cr(4)^xii—O(14)^xii	137.98 (17)
Cr(4)—O(13)—K(3)^x—O(12)^x	58.3 (2)	K(4)—O(14)—Cr(4)—O(11)	15.25 (18)
Cr(4)—O(13)—K(3)^x—O(14)^i	−40.9 (4)	K(4)—O(14)—Cr(4)—O(12)	134.24 (14)
Cr(4)—O(14)—K(2)^vii—K(1)^xii	−118.96 (18)	K(4)—O(14)—Cr(4)—O(13)	−104.53 (16)
Cr(4)—O(14)—K(2)^vii—K(3)^ix	107.88 (15)	K(4)—O(14)—K(2)^vii—O(3)^vii	−62.40 (14)
Cr(4)—O(14)—K(2)^vii—O(3)^vii	168.51 (11)	K(4)—O(14)—K(2)^vii—O(5)^xii	62.51 (12)
Cr(4)—O(14)—K(2)^vii—O(5)^xii	−66.58 (16)	K(4)—O(14)—K(2)^vii—O(6)^xii	117.11 (7)
Cr(4)—O(14)—K(2)^vii—O(6)^xii	−11.97 (14)	K(4)—O(14)—K(2)^vii—O(7)^vii	−81.48 (8)
Cr(4)—O(14)—K(2)^vii—O(7)^vii	149.44 (14)	K(4)—O(14)—K(2)^vii—O(9)^xii	51.85 (7)
Cr(4)—O(14)—K(2)^vii—O(9)^xii	−77.24 (12)	K(4)—O(14)—K(2)^vii—O(13)	125.92 (11)
Cr(4)—O(14)—K(2)^vii—O(13)	−3.17 (10)	K(4)—O(14)—K(3)^ix—O(8)^ix	−176.62 (9)
Cr(4)—O(14)—K(3)^ix—O(8)^ix	−34.85 (15)	K(4)—O(14)—K(3)^ix—O(12)	−138.28 (13)
Cr(4)—O(14)—K(3)^ix—O(12)	3.49 (9)	K(4)—O(14)—K(3)^ix—O(12)^ix	−97.11 (11)
Cr(4)—O(14)—K(3)^ix—O(12)^ix	44.66 (12)	K(4)—O(14)—K(3)^ix—O(13)^vi	−5.8 (3)
Cr(4)—O(14)—K(3)^ix—O(13)^vi	135.92 (17)	O(5)—K(1)^ii—O(5)^ii—K(1)	0.0000
Cr(4)—O(14)—K(4)—O(1)^xi	125.26 (16)	O(12)—K(3)—O(12)^ix—K(3)^ix	0.0000
Cr(4)—O(14)—K(4)—O(2)^xi	156.31 (13)	O(12)—K(3)^ix—O(12)^ix—K(3)	0.0000
Cr(4)—O(14)—K(4)—O(8)^vii	−141.03 (15)

Symmetry codes: (i) x+1, y, z; (ii) −x+2, −y+1, −z+1; (iii) −x+2, −y+2, −z+1; (iv) −x+1, −y+1, −z+1; (v) −x+1, −y+2, −z+1; (vi) x−1, y, z; (vii) −x+1, −y+1, −z; (viii) x, y−1, z; (ix) −x+1, −y, −z; (x) −x+2, −y, −z; (xi) x, y, z−1; (xii) −x+2, −y+1, −z; (xiii) x, y+1, z; (xiv) x, y−1, z−1; (xv) x, y+1, z+1; (xvi) x, y, z+1; (xvii) −x+2, −y, −z+1; (xviii) −x, −y+1, −z+1; (xix) x−1, y−1, z; (xx) x−1, y+1, z; (xxi) −x, −y+2, −z+1; (xxii) −x+1, −y, −z+1; (xxiii) −x+1, −y−1, −z; (xxiv) −x+1, −y+2, −z.