Bis(η⁶-trimethyl­silylbenzene)chromium(0)

The mol­ecule of the title compound, [Cr(C₆H₅SiMe₃)₂], has approximate C_2h symmetry. The two aromatic ring systems are arranged almost ideally parallel to each other; the angle between the least-squares planes of the six-membereed rings is 0.75 (12)°. The two Me₃Si substituents exhibit an anti arrangement, with a pseudo-torsion angle of 178.4 (2)°.

Key indicators

• Single-crystal X-ray study
• T = 100 K
• Mean [sigma](C-C) = 0.003 Å
• R factor = 0.024
• wR factor = 0.067
• Data-to-parameter ratio = 18.4

checkCIF/PLATON results

No syntax errors found



Alert level C
PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low .......       0.97

Alert level G
REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is
            correct. If it is not, please give the correct count in the
            _publ_section_exptl_refinement section of the submitted CIF.
           From the CIF: _diffrn_reflns_theta_max           26.03
           From the CIF: _reflns_number_total               3490
           Count of symmetry unique reflns         2099
           Completeness (_total/calc)            166.27%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured      1391
           Fraction of Friedel pairs measured     0.663
           Are heavy atom types Z>Si present        yes

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   1 ALERT level C = Check and explain
   1 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   0 ALERT type 2 Indicator that the structure model may be wrong or deficient
   1 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

---

Computing details

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP in SHELTLTL (Bruker, 1998); software used to prepare material for publication: SHELXL97.

(I)

Crystal data

[Cr(C9H14Si)2]	F(000) = 752
Mr = 352.58	Dx = 1.270 Mg m^−3
Orthorhombic, P212121	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ac 2ab	Cell parameters from 4816 reflections
a = 6.4586 (2) Å	θ = 2.7–26.0°
b = 16.7064 (6) Å	µ = 0.74 mm^−1
c = 17.0965 (6) Å	T = 100 K
V = 1844.71 (11) Å^3	Needle, orange
Z = 4	0.25 × 0.09 × 0.04 mm

Data collection

Bruker APEX2 area-detector diffractometer	3490 independent reflections
Radiation source: rotating anode	3230 reflections with I > 2σ(I)
Multi-layer mirror monochromator	Rint = 0.030
φ and ω scans	θmax = 26.0°, θmin = 2.4°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −7→7
Tmin = 0.836, Tmax = 0.975	k = −20→18
8279 measured reflections	l = −20→17

Refinement

Refinement on F^2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F^2 > 2σ(F^2)] = 0.024	H-atom parameters constrained
wR(F^2) = 0.067	w = 1/[σ^2(Fo^2) + (0.0304P)^2 + 0.1864P] where P = (Fo^2 + 2Fc^2)/3
S = 1.08	(Δ/σ)max = 0.002
3490 reflections	Δρmax = 0.37 e Å^−3
190 parameters	Δρmin = −0.22 e Å^−3
0 restraints	Absolute structure: Flack (1983), 1446 Friedel pairs
Primary atom site location: structure-invariant direct methods	Absolute structure parameter: 0.003 (17)

Special details

Experimental. ¹H NMR (200 MHz, C₆D₆, 298 K): δ 0.27 (s, 18H, SiMe₃), 4.21–4.26 (m, 4H, C₆H₅), 4.34 (m, 6H, C₆H₅).

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

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

	x	y	z	Uiso*/Ueq
Cr1	0.20358 (5)	0.401401 (19)	0.382439 (18)	0.01051 (9)
Si1	0.17410 (10)	0.19701 (3)	0.29508 (3)	0.01382 (14)
C1	0.3158 (4)	0.22168 (14)	0.20288 (12)	0.0223 (5)
H1A	0.2833	0.1816	0.1629	0.033*
H1B	0.4652	0.2216	0.2130	0.033*
H1C	0.2733	0.2747	0.1844	0.033*
Si2	0.23039 (9)	0.59753 (3)	0.47780 (3)	0.01335 (13)
C2	0.2631 (4)	0.09619 (12)	0.32887 (13)	0.0220 (5)
H2A	0.2349	0.0564	0.2881	0.033*
H2B	0.1889	0.0815	0.3767	0.033*
H2C	0.4122	0.0979	0.3395	0.033*
C3	−0.1104 (4)	0.19395 (14)	0.27602 (13)	0.0202 (5)
H3A	−0.1396	0.1549	0.2347	0.030*
H3B	−0.1578	0.2470	0.2594	0.030*
H3C	−0.1832	0.1783	0.3239	0.030*
C4	0.5089 (3)	0.58934 (13)	0.50617 (13)	0.0187 (5)
H4A	0.5369	0.6250	0.5504	0.028*
H4B	0.5962	0.6046	0.4617	0.028*
H4C	0.5398	0.5340	0.5213	0.028*
C5	0.1763 (4)	0.70327 (13)	0.44853 (13)	0.0219 (5)
H5A	0.2048	0.7390	0.4927	0.033*
H5B	0.0306	0.7084	0.4332	0.033*
H5C	0.2650	0.7179	0.4043	0.033*
C6	0.0646 (4)	0.57160 (14)	0.56335 (13)	0.0218 (5)
H6A	0.0957	0.6079	0.6068	0.033*
H6B	0.0925	0.5163	0.5794	0.033*
H6C	−0.0815	0.5769	0.5488	0.033*
C11	0.2297 (3)	0.27179 (11)	0.37406 (12)	0.0132 (4)
C12	0.4284 (3)	0.30704 (12)	0.38292 (13)	0.0144 (4)
H12A	0.5341	0.2945	0.3463	0.017*
C13	0.4725 (4)	0.36016 (13)	0.44463 (13)	0.0162 (5)
H13A	0.6070	0.3826	0.4496	0.019*
C14	0.3164 (4)	0.37998 (12)	0.49899 (12)	0.0161 (5)
H14A	0.3455	0.4158	0.5407	0.019*
C15	0.1182 (4)	0.34670 (12)	0.49122 (13)	0.0161 (5)
H15A	0.0124	0.3602	0.5275	0.019*
C16	0.0762 (3)	0.29299 (12)	0.42935 (12)	0.0138 (5)
H16A	−0.0585	0.2706	0.4248	0.017*
C21	0.1759 (3)	0.52965 (11)	0.39308 (12)	0.0131 (4)
C22	0.3324 (4)	0.51008 (12)	0.33785 (12)	0.0151 (5)
H22A	0.4666	0.5327	0.3434	0.018*
C23	0.2924 (4)	0.45752 (12)	0.27475 (12)	0.0170 (5)
H23A	0.3991	0.4451	0.2385	0.020*
C24	0.0946 (4)	0.42359 (13)	0.26570 (13)	0.0181 (5)
H24A	0.0676	0.3884	0.2233	0.022*
C25	−0.0630 (4)	0.44184 (13)	0.31945 (13)	0.0171 (5)
H25A	−0.1963	0.4186	0.3136	0.021*
C26	−0.0236 (3)	0.49469 (12)	0.38218 (13)	0.0137 (4)
H26A	−0.1319	0.5072	0.4178	0.016*

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Cr1	0.01369 (17)	0.00839 (15)	0.00944 (17)	0.00043 (13)	−0.00031 (13)	0.00023 (12)
Si1	0.0150 (3)	0.0126 (3)	0.0139 (3)	0.0010 (2)	−0.0016 (2)	−0.0032 (2)
C1	0.0204 (13)	0.0269 (12)	0.0195 (12)	0.0024 (10)	0.0026 (11)	−0.0044 (9)
Si2	0.0152 (3)	0.0108 (3)	0.0140 (3)	0.0009 (2)	−0.0007 (2)	−0.0008 (2)
C2	0.0292 (15)	0.0122 (10)	0.0246 (12)	0.0020 (11)	−0.0062 (10)	−0.0044 (10)
C3	0.0176 (12)	0.0214 (12)	0.0215 (13)	−0.0020 (10)	−0.0029 (9)	−0.0049 (10)
C4	0.0178 (12)	0.0152 (12)	0.0231 (12)	−0.0009 (9)	−0.0024 (9)	−0.0004 (10)
C5	0.0303 (14)	0.0151 (11)	0.0204 (12)	0.0060 (11)	−0.0051 (10)	−0.0024 (9)
C6	0.0206 (14)	0.0263 (13)	0.0183 (13)	−0.0028 (10)	0.0007 (10)	−0.0035 (10)
C11	0.0194 (12)	0.0072 (9)	0.0130 (11)	0.0015 (8)	−0.0018 (9)	0.0009 (8)
C12	0.0156 (11)	0.0108 (10)	0.0168 (12)	0.0043 (9)	−0.0001 (9)	0.0024 (9)
C13	0.0173 (13)	0.0108 (10)	0.0205 (12)	−0.0001 (9)	−0.0071 (9)	0.0025 (9)
C14	0.0257 (13)	0.0112 (10)	0.0115 (10)	0.0009 (9)	−0.0054 (10)	0.0011 (8)
C15	0.0245 (13)	0.0123 (11)	0.0116 (11)	0.0033 (9)	0.0026 (9)	0.0025 (9)
C16	0.0169 (12)	0.0096 (10)	0.0149 (11)	−0.0016 (9)	0.0015 (9)	0.0036 (9)
C21	0.0165 (11)	0.0084 (10)	0.0143 (11)	0.0017 (8)	0.0010 (9)	0.0017 (8)
C22	0.0204 (13)	0.0095 (10)	0.0154 (12)	−0.0012 (9)	0.0011 (10)	0.0042 (8)
C23	0.0275 (13)	0.0128 (10)	0.0106 (11)	0.0016 (10)	0.0031 (10)	0.0041 (8)
C24	0.0315 (14)	0.0126 (11)	0.0103 (12)	0.0037 (10)	−0.0067 (10)	0.0009 (8)
C25	0.0187 (13)	0.0143 (11)	0.0183 (12)	0.0023 (9)	−0.0073 (10)	0.0024 (9)
C26	0.0122 (11)	0.0132 (10)	0.0158 (12)	0.0038 (8)	−0.0021 (9)	0.0003 (9)

Geometric parameters (Å, º)

Cr1—C22	2.138 (2)	C4—H4B	0.9800
Cr1—C25	2.140 (2)	C4—H4C	0.9800
Cr1—C26	2.140 (2)	C5—H5A	0.9800
Cr1—C12	2.143 (2)	C5—H5B	0.9800
Cr1—C23	2.144 (2)	C5—H5C	0.9800
Cr1—C15	2.144 (2)	C6—H6A	0.9800
Cr1—C16	2.145 (2)	C6—H6B	0.9800
Cr1—C24	2.148 (2)	C6—H6C	0.9800
Cr1—C13	2.150 (2)	C11—C16	1.415 (3)
Cr1—C14	2.152 (2)	C11—C12	1.420 (3)
Cr1—C21	2.1578 (19)	C12—C13	1.408 (3)
Cr1—C11	2.1766 (19)	C12—H12A	0.9500
Si1—C3	1.867 (2)	C13—C14	1.411 (3)
Si1—C1	1.869 (2)	C13—H13A	0.9500
Si1—C2	1.871 (2)	C14—C15	1.402 (3)
Si1—C11	1.874 (2)	C14—H14A	0.9500
C1—H1A	0.9800	C15—C16	1.413 (3)
C1—H1B	0.9800	C15—H15A	0.9500
C1—H1C	0.9800	C16—H16A	0.9500
Si2—C6	1.864 (2)	C21—C22	1.422 (3)
Si2—C4	1.868 (2)	C21—C26	1.427 (3)
Si2—C5	1.869 (2)	C22—C23	1.415 (3)
Si2—C21	1.873 (2)	C22—H22A	0.9500
C2—H2A	0.9800	C23—C24	1.406 (3)
C2—H2B	0.9800	C23—H23A	0.9500
C2—H2C	0.9800	C24—C25	1.405 (3)
C3—H3A	0.9800	C24—H24A	0.9500
C3—H3B	0.9800	C25—C26	1.412 (3)
C3—H3C	0.9800	C25—H25A	0.9500
C4—H4A	0.9800	C26—H26A	0.9500
C22—Cr1—C25	82.28 (9)	Si1—C3—H3C	109.5
C22—Cr1—C26	69.37 (9)	H3A—C3—H3C	109.5
C25—Cr1—C26	38.53 (8)	H3B—C3—H3C	109.5
C22—Cr1—C12	111.24 (8)	Si2—C4—H4A	109.5
C25—Cr1—C12	141.18 (8)	Si2—C4—H4B	109.5
C26—Cr1—C12	179.37 (9)	H4A—C4—H4B	109.5
C22—Cr1—C23	38.59 (8)	Si2—C4—H4C	109.5
C25—Cr1—C23	69.21 (9)	H4A—C4—H4C	109.5
C26—Cr1—C23	82.14 (9)	H4B—C4—H4C	109.5
C12—Cr1—C23	98.26 (9)	Si2—C5—H5A	109.5
C22—Cr1—C15	140.47 (8)	Si2—C5—H5B	109.5
C25—Cr1—C15	111.35 (9)	H5A—C5—H5B	109.5
C26—Cr1—C15	97.81 (9)	Si2—C5—H5C	109.5
C12—Cr1—C15	81.80 (8)	H5A—C5—H5C	109.5
C23—Cr1—C15	179.00 (9)	H5B—C5—H5C	109.5
C22—Cr1—C16	178.92 (9)	Si2—C6—H6A	109.5
C25—Cr1—C16	98.40 (8)	Si2—C6—H6B	109.5
C26—Cr1—C16	110.65 (8)	H6A—C6—H6B	109.5
C12—Cr1—C16	68.74 (8)	Si2—C6—H6C	109.5
C23—Cr1—C16	142.46 (8)	H6A—C6—H6C	109.5
C15—Cr1—C16	38.48 (8)	H6B—C6—H6C	109.5
C22—Cr1—C24	69.50 (8)	C16—C11—C12	117.27 (19)
C25—Cr1—C24	38.24 (9)	C16—C11—Si1	120.91 (16)
C26—Cr1—C24	69.39 (8)	C12—C11—Si1	121.78 (16)
C12—Cr1—C24	110.63 (8)	C16—C11—Cr1	69.68 (12)
C23—Cr1—C24	38.23 (9)	C12—C11—Cr1	69.54 (11)
C15—Cr1—C24	142.66 (9)	Si1—C11—Cr1	134.08 (10)
C16—Cr1—C24	111.55 (8)	C13—C12—C11	121.6 (2)
C22—Cr1—C13	97.70 (9)	C13—C12—Cr1	71.12 (12)
C25—Cr1—C13	179.40 (9)	C11—C12—Cr1	72.09 (12)
C26—Cr1—C13	142.01 (8)	C13—C12—H12A	119.2
C12—Cr1—C13	38.28 (8)	C11—C12—H12A	119.2
C23—Cr1—C13	110.40 (9)	Cr1—C12—H12A	130.3
C15—Cr1—C13	69.04 (9)	C12—C13—C14	119.8 (2)
C16—Cr1—C13	81.63 (8)	C12—C13—Cr1	70.60 (12)
C24—Cr1—C13	141.19 (9)	C14—C13—Cr1	70.93 (13)
C22—Cr1—C14	109.85 (8)	C12—C13—H13A	120.1
C25—Cr1—C14	142.28 (9)	C14—C13—H13A	120.1
C26—Cr1—C14	110.81 (8)	Cr1—C13—H13A	131.1
C12—Cr1—C14	69.18 (8)	C15—C14—C13	119.8 (2)
C23—Cr1—C14	141.01 (9)	C15—C14—Cr1	70.66 (13)
C15—Cr1—C14	38.10 (8)	C13—C14—Cr1	70.79 (12)
C16—Cr1—C14	69.10 (8)	C15—C14—H14A	120.1
C24—Cr1—C14	179.24 (10)	C13—C14—H14A	120.1
C13—Cr1—C14	38.28 (9)	Cr1—C14—H14A	131.2
C22—Cr1—C21	38.65 (8)	C14—C15—C16	119.9 (2)
C25—Cr1—C21	70.26 (8)	C14—C15—Cr1	71.24 (13)
C26—Cr1—C21	38.77 (8)	C16—C15—Cr1	70.79 (12)
C12—Cr1—C21	141.83 (8)	C14—C15—H15A	120.1
C23—Cr1—C21	70.15 (8)	C16—C15—H15A	120.1
C15—Cr1—C21	109.19 (8)	Cr1—C15—H15A	130.5
C16—Cr1—C21	140.82 (8)	C15—C16—C11	121.6 (2)
C24—Cr1—C21	83.10 (8)	C15—C16—Cr1	70.73 (12)
C13—Cr1—C21	110.09 (8)	C11—C16—Cr1	72.10 (12)
C14—Cr1—C21	96.61 (8)	C15—C16—H16A	119.2
C22—Cr1—C11	142.30 (9)	C11—C16—H16A	119.2
C25—Cr1—C11	110.08 (8)	Cr1—C16—H16A	130.8
C26—Cr1—C11	141.02 (9)	C22—C21—C26	117.47 (19)
C12—Cr1—C11	38.37 (8)	C22—C21—Si2	121.28 (17)
C23—Cr1—C11	110.96 (8)	C26—C21—Si2	121.24 (16)
C15—Cr1—C11	69.70 (8)	C22—C21—Cr1	69.92 (12)
C16—Cr1—C11	38.22 (8)	C26—C21—Cr1	69.96 (11)
C24—Cr1—C11	97.81 (8)	Si2—C21—Cr1	130.61 (11)
C13—Cr1—C11	69.58 (8)	C23—C22—C21	121.3 (2)
C14—Cr1—C11	82.49 (8)	C23—C22—Cr1	70.95 (12)
C21—Cr1—C11	178.89 (8)	C21—C22—Cr1	71.43 (12)
C3—Si1—C1	109.93 (11)	C23—C22—H22A	119.4
C3—Si1—C2	109.37 (11)	C21—C22—H22A	119.4
C1—Si1—C2	107.97 (10)	Cr1—C22—H22A	131.1
C3—Si1—C11	109.43 (10)	C24—C23—C22	120.0 (2)
C1—Si1—C11	111.51 (10)	C24—C23—Cr1	71.05 (13)
C2—Si1—C11	108.59 (9)	C22—C23—Cr1	70.46 (12)
Si1—C1—H1A	109.5	C24—C23—H23A	120.0
Si1—C1—H1B	109.5	C22—C23—H23A	120.0
H1A—C1—H1B	109.5	Cr1—C23—H23A	131.3
Si1—C1—H1C	109.5	C25—C24—C23	119.9 (2)
H1A—C1—H1C	109.5	C25—C24—Cr1	70.55 (12)
H1B—C1—H1C	109.5	C23—C24—Cr1	70.72 (12)
C6—Si2—C4	109.41 (11)	C25—C24—H24A	120.0
C6—Si2—C5	108.81 (11)	C23—C24—H24A	120.0
C4—Si2—C5	108.60 (11)	Cr1—C24—H24A	131.5
C6—Si2—C21	110.99 (10)	C24—C25—C26	120.1 (2)
C4—Si2—C21	109.72 (10)	C24—C25—Cr1	71.20 (13)
C5—Si2—C21	109.27 (9)	C26—C25—Cr1	70.75 (12)
Si1—C2—H2A	109.5	C24—C25—H25A	119.9
Si1—C2—H2B	109.5	C26—C25—H25A	119.9
H2A—C2—H2B	109.5	Cr1—C25—H25A	130.8
Si1—C2—H2C	109.5	C25—C26—C21	121.2 (2)
H2A—C2—H2C	109.5	C25—C26—Cr1	70.72 (12)
H2B—C2—H2C	109.5	C21—C26—Cr1	71.27 (12)
Si1—C3—H3A	109.5	C25—C26—H26A	119.4
Si1—C3—H3B	109.5	C21—C26—H26A	119.4
H3A—C3—H3B	109.5	Cr1—C26—H26A	131.5
C3—Si1—C11—C16	24.34 (19)	C6—Si2—C21—C22	−149.92 (17)
C1—Si1—C11—C16	146.18 (17)	C4—Si2—C21—C22	−28.88 (19)
C2—Si1—C11—C16	−94.98 (18)	C5—Si2—C21—C22	90.09 (19)
C3—Si1—C11—C12	−158.18 (17)	C6—Si2—C21—C26	29.2 (2)
C1—Si1—C11—C12	−36.3 (2)	C4—Si2—C21—C26	150.20 (16)
C2—Si1—C11—C12	82.50 (18)	C5—Si2—C21—C26	−90.84 (19)
C3—Si1—C11—Cr1	−66.60 (18)	C6—Si2—C21—Cr1	−60.39 (18)
C1—Si1—C11—Cr1	55.24 (19)	C4—Si2—C21—Cr1	60.65 (17)
C2—Si1—C11—Cr1	174.08 (15)	C5—Si2—C21—Cr1	179.61 (14)
C22—Cr1—C11—C16	178.46 (14)	C25—Cr1—C21—C22	−102.71 (14)
C25—Cr1—C11—C16	−77.72 (14)	C26—Cr1—C21—C22	−131.01 (19)
C26—Cr1—C11—C16	−48.46 (18)	C12—Cr1—C21—C22	49.30 (18)
C12—Cr1—C11—C16	131.27 (19)	C23—Cr1—C21—C22	−28.46 (13)
C23—Cr1—C11—C16	−152.37 (13)	C15—Cr1—C21—C22	150.74 (13)
C15—Cr1—C11—C16	28.43 (12)	C16—Cr1—C21—C22	178.50 (14)
C24—Cr1—C11—C16	−115.17 (13)	C24—Cr1—C21—C22	−65.57 (13)
C13—Cr1—C11—C16	102.81 (14)	C13—Cr1—C21—C22	76.77 (14)
C14—Cr1—C11—C16	65.54 (13)	C14—Cr1—C21—C22	113.73 (14)
C22—Cr1—C11—C12	47.18 (19)	C22—Cr1—C21—C26	131.01 (19)
C25—Cr1—C11—C12	151.01 (13)	C25—Cr1—C21—C26	28.30 (13)
C26—Cr1—C11—C12	−179.73 (14)	C12—Cr1—C21—C26	−179.70 (14)
C23—Cr1—C11—C12	76.36 (15)	C23—Cr1—C21—C26	102.55 (14)
C15—Cr1—C11—C12	−102.84 (14)	C15—Cr1—C21—C26	−78.25 (14)
C16—Cr1—C11—C12	−131.27 (19)	C16—Cr1—C21—C26	−50.49 (18)
C24—Cr1—C11—C12	113.56 (14)	C24—Cr1—C21—C26	65.44 (13)
C13—Cr1—C11—C12	−28.46 (13)	C13—Cr1—C21—C26	−152.22 (13)
C14—Cr1—C11—C12	−65.73 (13)	C14—Cr1—C21—C26	−115.26 (14)
C22—Cr1—C11—Si1	−67.7 (2)	C22—Cr1—C21—Si2	−114.5 (2)
C25—Cr1—C11—Si1	36.10 (18)	C25—Cr1—C21—Si2	142.78 (17)
C26—Cr1—C11—Si1	65.4 (2)	C26—Cr1—C21—Si2	114.5 (2)
C12—Cr1—C11—Si1	−114.9 (2)	C12—Cr1—C21—Si2	−65.2 (2)
C23—Cr1—C11—Si1	−38.55 (19)	C23—Cr1—C21—Si2	−142.97 (17)
C15—Cr1—C11—Si1	142.26 (19)	C15—Cr1—C21—Si2	36.23 (18)
C16—Cr1—C11—Si1	113.8 (2)	C16—Cr1—C21—Si2	64.0 (2)
C24—Cr1—C11—Si1	−1.34 (18)	C24—Cr1—C21—Si2	179.93 (16)
C13—Cr1—C11—Si1	−143.37 (18)	C13—Cr1—C21—Si2	−37.74 (18)
C14—Cr1—C11—Si1	179.36 (17)	C14—Cr1—C21—Si2	−0.78 (16)
C16—C11—C12—C13	0.8 (3)	C26—C21—C22—C23	−0.4 (3)
Si1—C11—C12—C13	−176.79 (15)	Si2—C21—C22—C23	178.70 (15)
Cr1—C11—C12—C13	53.24 (18)	Cr1—C21—C22—C23	52.63 (18)
C16—C11—C12—Cr1	−52.46 (17)	C26—C21—C22—Cr1	−53.04 (17)
Si1—C11—C12—Cr1	129.97 (14)	Si2—C21—C22—Cr1	126.07 (15)
C22—Cr1—C12—C13	74.90 (14)	C25—Cr1—C22—C23	−66.15 (14)
C25—Cr1—C12—C13	179.56 (15)	C26—Cr1—C22—C23	−103.73 (15)
C23—Cr1—C12—C13	112.62 (14)	C12—Cr1—C22—C23	76.12 (15)
C15—Cr1—C12—C13	−66.37 (14)	C15—Cr1—C22—C23	179.45 (15)
C16—Cr1—C12—C13	−103.94 (14)	C24—Cr1—C22—C23	−28.85 (14)
C24—Cr1—C12—C13	150.11 (13)	C13—Cr1—C22—C23	113.24 (14)
C14—Cr1—C12—C13	−29.10 (13)	C14—Cr1—C22—C23	150.74 (14)
C21—Cr1—C12—C13	44.37 (19)	C21—Cr1—C22—C23	−134.1 (2)
C11—Cr1—C12—C13	−133.87 (19)	C11—Cr1—C22—C23	46.9 (2)
C22—Cr1—C12—C11	−151.23 (12)	C25—Cr1—C22—C21	67.91 (13)
C25—Cr1—C12—C11	−46.56 (19)	C26—Cr1—C22—C21	30.33 (13)
C23—Cr1—C12—C11	−113.51 (13)	C12—Cr1—C22—C21	−149.83 (12)
C15—Cr1—C12—C11	67.50 (13)	C23—Cr1—C22—C21	134.1 (2)
C16—Cr1—C12—C11	29.93 (12)	C15—Cr1—C22—C21	−46.49 (19)
C24—Cr1—C12—C11	−76.01 (14)	C24—Cr1—C22—C21	105.21 (14)
C13—Cr1—C12—C11	133.87 (19)	C13—Cr1—C22—C21	−112.70 (13)
C14—Cr1—C12—C11	104.77 (14)	C14—Cr1—C22—C21	−75.20 (14)
C21—Cr1—C12—C11	178.24 (13)	C11—Cr1—C22—C21	−179.07 (13)
C11—C12—C13—C14	−0.6 (3)	C21—C22—C23—C24	0.1 (3)
Cr1—C12—C13—C14	53.06 (18)	Cr1—C22—C23—C24	52.91 (17)
C11—C12—C13—Cr1	−53.67 (18)	C21—C22—C23—Cr1	−52.85 (18)
C22—Cr1—C13—C12	−114.76 (13)	C22—Cr1—C23—C24	−133.1 (2)
C26—Cr1—C13—C12	179.10 (14)	C25—Cr1—C23—C24	−28.89 (13)
C23—Cr1—C13—C12	−77.06 (14)	C26—Cr1—C23—C24	−66.49 (13)
C15—Cr1—C13—C12	103.82 (14)	C12—Cr1—C23—C24	113.02 (13)
C16—Cr1—C13—C12	66.10 (13)	C16—Cr1—C23—C24	47.4 (2)
C24—Cr1—C13—C12	−48.08 (19)	C13—Cr1—C23—C24	150.62 (13)
C14—Cr1—C13—C12	132.79 (19)	C14—Cr1—C23—C24	179.97 (14)
C21—Cr1—C13—C12	−152.60 (12)	C21—Cr1—C23—C24	−104.59 (14)
C11—Cr1—C13—C12	28.52 (13)	C11—Cr1—C23—C24	75.46 (15)
C22—Cr1—C13—C14	112.45 (13)	C25—Cr1—C23—C22	104.20 (15)
C26—Cr1—C13—C14	46.30 (19)	C26—Cr1—C23—C22	66.60 (14)
C12—Cr1—C13—C14	−132.79 (19)	C12—Cr1—C23—C22	−113.89 (14)
C23—Cr1—C13—C14	150.14 (12)	C16—Cr1—C23—C22	−179.54 (15)
C15—Cr1—C13—C14	−28.97 (12)	C24—Cr1—C23—C22	133.1 (2)
C16—Cr1—C13—C14	−66.70 (13)	C13—Cr1—C23—C22	−76.29 (15)
C24—Cr1—C13—C14	179.12 (13)	C14—Cr1—C23—C22	−46.94 (19)
C21—Cr1—C13—C14	74.60 (14)	C21—Cr1—C23—C22	28.50 (13)
C11—Cr1—C13—C14	−104.27 (14)	C11—Cr1—C23—C22	−151.45 (13)
C12—C13—C14—C15	0.0 (3)	C22—C23—C24—C25	−0.1 (3)
Cr1—C13—C14—C15	52.86 (18)	Cr1—C23—C24—C25	52.54 (18)
C12—C13—C14—Cr1	−52.91 (17)	C22—C23—C24—Cr1	−52.64 (17)
C22—Cr1—C14—C15	150.30 (12)	C22—Cr1—C24—C25	−104.05 (15)
C25—Cr1—C14—C15	46.81 (18)	C26—Cr1—C24—C25	−29.19 (13)
C26—Cr1—C14—C15	75.57 (13)	C12—Cr1—C24—C25	150.14 (13)
C12—Cr1—C14—C15	−103.75 (13)	C23—Cr1—C24—C25	−133.15 (19)
C23—Cr1—C14—C15	179.28 (14)	C15—Cr1—C24—C25	46.1 (2)
C16—Cr1—C14—C15	−29.42 (12)	C16—Cr1—C24—C25	75.68 (14)
C13—Cr1—C14—C15	−132.85 (18)	C13—Cr1—C24—C25	179.65 (14)
C21—Cr1—C14—C15	112.86 (13)	C21—Cr1—C24—C25	−66.67 (14)
C11—Cr1—C14—C15	−66.49 (13)	C11—Cr1—C24—C25	112.69 (13)
C22—Cr1—C14—C13	−76.85 (14)	C22—Cr1—C24—C23	29.10 (12)
C25—Cr1—C14—C13	179.66 (14)	C25—Cr1—C24—C23	133.15 (19)
C26—Cr1—C14—C13	−151.57 (12)	C26—Cr1—C24—C23	103.96 (14)
C12—Cr1—C14—C13	29.10 (12)	C12—Cr1—C24—C23	−76.72 (14)
C23—Cr1—C14—C13	−47.87 (18)	C15—Cr1—C24—C23	179.26 (14)
C15—Cr1—C14—C13	132.85 (18)	C16—Cr1—C24—C23	−151.18 (12)
C16—Cr1—C14—C13	103.43 (14)	C13—Cr1—C24—C23	−47.21 (18)
C21—Cr1—C14—C13	−114.28 (13)	C21—Cr1—C24—C23	66.47 (13)
C11—Cr1—C14—C13	66.36 (13)	C11—Cr1—C24—C23	−114.16 (13)
C13—C14—C15—C16	0.5 (3)	C23—C24—C25—C26	0.5 (3)
Cr1—C14—C15—C16	53.42 (17)	Cr1—C24—C25—C26	53.12 (18)
C13—C14—C15—Cr1	−52.92 (18)	C23—C24—C25—Cr1	−52.61 (18)
C22—Cr1—C15—C14	−47.08 (19)	C22—Cr1—C25—C24	66.48 (14)
C25—Cr1—C15—C14	−151.39 (12)	C26—Cr1—C25—C24	132.9 (2)
C26—Cr1—C15—C14	−113.97 (13)	C12—Cr1—C25—C24	−48.0 (2)
C12—Cr1—C15—C14	66.53 (12)	C23—Cr1—C25—C24	28.88 (12)
C16—Cr1—C15—C14	132.49 (18)	C15—Cr1—C25—C24	−152.00 (13)
C24—Cr1—C15—C14	179.99 (14)	C16—Cr1—C25—C24	−114.37 (14)
C13—Cr1—C15—C14	29.10 (12)	C14—Cr1—C25—C24	179.12 (14)
C21—Cr1—C15—C14	−75.74 (14)	C21—Cr1—C25—C24	104.42 (14)
C11—Cr1—C15—C14	104.23 (13)	C11—Cr1—C25—C24	−76.70 (14)
C22—Cr1—C15—C16	−179.56 (14)	C22—Cr1—C25—C26	−66.40 (13)
C25—Cr1—C15—C16	76.13 (14)	C12—Cr1—C25—C26	179.10 (14)
C26—Cr1—C15—C16	113.55 (13)	C23—Cr1—C25—C26	−104.00 (14)
C12—Cr1—C15—C16	−65.95 (13)	C15—Cr1—C25—C26	75.12 (14)
C24—Cr1—C15—C16	47.50 (19)	C16—Cr1—C25—C26	112.75 (13)
C13—Cr1—C15—C16	−103.38 (14)	C24—Cr1—C25—C26	−132.9 (2)
C14—Cr1—C15—C16	−132.49 (18)	C14—Cr1—C25—C26	46.24 (19)
C21—Cr1—C15—C16	151.78 (13)	C21—Cr1—C25—C26	−28.46 (13)
C11—Cr1—C15—C16	−28.26 (13)	C11—Cr1—C25—C26	150.42 (13)
C14—C15—C16—C11	−0.3 (3)	C24—C25—C26—C21	−0.9 (3)
Cr1—C15—C16—C11	53.31 (18)	Cr1—C25—C26—C21	52.45 (18)
C14—C15—C16—Cr1	−53.63 (17)	C24—C25—C26—Cr1	−53.33 (18)
C12—C11—C16—C15	−0.3 (3)	C22—C21—C26—C25	0.8 (3)
Si1—C11—C16—C15	177.29 (15)	Si2—C21—C26—C25	−178.30 (15)
Cr1—C11—C16—C15	−52.70 (18)	Cr1—C21—C26—C25	−52.21 (17)
C12—C11—C16—Cr1	52.39 (16)	C22—C21—C26—Cr1	53.01 (17)
Si1—C11—C16—Cr1	−130.01 (14)	Si2—C21—C26—Cr1	−126.09 (14)
C25—Cr1—C16—C15	−113.94 (13)	C22—Cr1—C26—C25	104.02 (14)
C26—Cr1—C16—C15	−76.07 (14)	C23—Cr1—C26—C25	66.31 (14)
C12—Cr1—C16—C15	104.10 (14)	C15—Cr1—C26—C25	−114.70 (14)
C23—Cr1—C16—C15	179.43 (16)	C16—Cr1—C26—C25	−77.14 (14)
C24—Cr1—C16—C15	−151.26 (13)	C24—Cr1—C26—C25	28.99 (13)
C13—Cr1—C16—C15	66.67 (14)	C13—Cr1—C26—C25	179.58 (15)
C14—Cr1—C16—C15	29.15 (13)	C14—Cr1—C26—C25	−151.79 (13)
C21—Cr1—C16—C15	−44.98 (19)	C21—Cr1—C26—C25	134.25 (19)
C11—Cr1—C16—C15	134.14 (19)	C11—Cr1—C26—C25	−47.48 (19)
C25—Cr1—C16—C11	111.92 (13)	C22—Cr1—C26—C21	−30.24 (12)
C26—Cr1—C16—C11	149.79 (12)	C25—Cr1—C26—C21	−134.25 (19)
C12—Cr1—C16—C11	−30.04 (13)	C23—Cr1—C26—C21	−67.94 (13)
C23—Cr1—C16—C11	45.3 (2)	C15—Cr1—C26—C21	111.05 (13)
C15—Cr1—C16—C11	−134.14 (19)	C16—Cr1—C26—C21	148.61 (12)
C24—Cr1—C16—C11	74.60 (14)	C24—Cr1—C26—C21	−105.27 (14)
C13—Cr1—C16—C11	−67.47 (13)	C13—Cr1—C26—C21	45.32 (19)
C14—Cr1—C16—C11	−104.99 (14)	C14—Cr1—C26—C21	73.95 (14)
C21—Cr1—C16—C11	−179.12 (13)	C11—Cr1—C26—C21	178.27 (13)