Di-μ3-oxido-di-μ2-oxido-tetra­oxido­bis­(1,1,2,2-tetra­methyl­ethylenedicyclo­penta­dien­yl)­dimolyb­denum(IV)­dimolybdenum(VI) hexa­hydrate

Ahmed, T.J.; Zakharov, L.N.; Tyler, D.R.

doi:10.1107/S1600536808031668

metal-organic compounds

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ISSN: 2056-9890

Volume 64| Part 11| November 2008| Pages m1370-m1371

doi:10.1107/S1600536808031668

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Di-μ₃-oxido-di-μ₂-oxido-tetraoxidobis(1,1,2,2-tetramethylethylenedicyclopentadienyl)dimolybdenum(IV)dimolybdenum(VI) hexahydrate

Takiya J. Ahmed,^a Lev N. Zakharov ^a and David R. Tyler ^a ^*

^aDepartment of Chemistry, 1253 University of Oregon, Eugene, Oregon 97403-1253, USA
^*Correspondence e-mail: dtyler@uoregon.edu

(Received 24 September 2008; accepted 30 September 2008; online 9 October 2008)

The title compound, [Mo₄(C₁₆H₂₀)₂O₈]·6H₂O, is a centrosymmetric ansa-molybdocene complex in which two dinuclear [C₂Me₄(η⁵-C₅H₄)₂]Mo(μ₂-O)₂MoO₂ units dimerize by forming two μ₃-O bridges between three Mo atoms. The ansa-molybdocene [C₂Me₄(η⁵-C₅H₄)₂]Mo unit has a typical bent-sandwich metallocene structure with an inter-ring angle of 127.98 (8)°. The Mo atom in the bridging (μ₂-O)(μ₃-O)₂MoO₂ group has a distorted trigonal–bipyramidal coordination. The Mo—(μ₃-O) and Mo—(μ₂-O) bond distances inside the units [2.0869 (14) and 2.1014 (15) Å, respectively] are slightly longer than the Mo(−x + 1, −y + 1, −z)—(μ₃-O) bond distance between the units [1.9986 (14) Å]. The solvent water molecules together with complex O atoms form a network of O—H⋯O hydrogen bonds.

Related literature

For related structures, see: Prout & Daran (1978 ); Adam & Green (1981 ); Daran & Prout (1977 ); Prout et al. (1974 ). For general synthesis and reactivity information on related tetramethylethylene-bridged ansa-molybdocene complexes, see: Ahmed et al. (2007 ).

Experimental

Crystal data

[Mo₄(C₁₆H₂₀)₂O₈]·6H₂O
M_r = 1044.50
Triclinic, $[P \overline 1]$
a = 7.4106 (7) Å
b = 9.3518 (8) Å
c = 13.5735 (12) Å
α = 93.365 (1)°
β = 98.604 (1)°
γ = 103.175 (1)°
V = 901.39 (14) Å³
Z = 1
Mo Kα radiation
μ = 1.43 mm⁻¹
T = 173 (2) K
0.30 × 0.09 × 0.07 mm

Data collection

Bruker APEX CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2000 ) T_min = 0.673, T_max = 0.907
10175 measured reflections
3916 independent reflections
3621 reflections with I > 2σ(I)
R_int = 0.014

Refinement

R[F² > 2σ(F²)] = 0.021
wR(F²) = 0.054
S = 1.09
3916 reflections
250 parameters
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.46 e Å⁻³
Δρ_min = −0.41 e Å⁻³

Table 1
Selected bond lengths (Å)

Mo1—O1	2.0869 (14)
Mo1—O2	2.1014 (15)
Mo2—O4	1.7217 (16)
Mo2—O3	1.7237 (16)
Mo2—O2	1.8385 (15)
Mo2—O1ⁱ	1.9986 (14)
Mo2—O1	2.0481 (15)
Symmetry code: (i) -x+1, -y+1, -z.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1S—H2S⋯O3Sⁱⁱ	0.76 (4)	2.02 (4)	2.771 (3)	169 (4)
O3S—H6S⋯O2S	0.80 (4)	1.99 (4)	2.792 (3)	175 (3)
O2S—H4S⋯O4ⁱ	0.76 (4)	2.16 (4)	2.908 (3)	167 (4)
O3S—H5S⋯O1Sⁱⁱⁱ	0.81 (4)	2.06 (4)	2.850 (3)	163 (3)
O2S—H3S⋯O1S	0.76 (4)	2.12 (4)	2.865 (3)	165 (4)
O1S—H1S⋯O3ⁱ	0.82 (3)	2.01 (3)	2.816 (3)	167 (3)
Symmetry codes: (i) -x+1, -y+1, -z; (ii) x+1, y, z; (iii) -x+1, -y+1, -z+1.

Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536808031668/hb2806sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808031668/hb2806Isup2.hkl

checkCIF report

Comment top

We previously reported the synthesis and characterization of ansa-molybdocenes bridged by tetramethylethylene linkages (Ahmed et al., 2007). Of those species, the monomeric [{C₂Me₄(η⁵-C₅H₄)₂}Mo(OH)(OH₂)][C₇H₇SO₃] was exploited for catalytic hydration and hydrolysis reactions in aqueous solution.

The title complex, (I), was obtained as large needles from the slow oxidation of the [{C₂Me₄(η⁵-C₅H₄)₂}Mo(OH)(OH₂)][C₇H₇SO₃] catalyst in the presence of 0.50 ml ethyl acetate in water at approximately pH 4. It is uncertain whether the title compound exists in equilibrium with the catalytic complex in water under anaerobic conditions. The compound is a centrosymmetric ansa-molybdocene complex in which two {C₂Me₄(η⁵-C₅H₄)₂}Mo(µ₂-O)₂MoO₂ units are connected by two µ₃-O bridges between three Mo atoms (Fig. 1). The ansa-molybdocene {C₂Me₄(η⁵-C₅H₄)₂}Mo₂ has a typical bent-sandwich structure with an angle of 127.98 (8)° between the average planes of the C₅-rings. The Mo atom in the bridging (µ₂-0)(µ₃-O)₂MoO₂ group has a distorted trigonal bipyramidal coordination. The Mo(1)-(µ₃-O) and Mo(1)-(µ₂-O) bond distances, 2.0869 (14) and 2.1014 (15) Å, respectively, are slightly longer than the O(1)-Mo(2)(1-x, 1-y,-z) bond distance, 1.9986 (14) Å (Table 1). Solvent water molecules together with O atoms of the (µ₂-0)(µ₃-O)₂MoO₂ groups form a network of H-bonds (Table 2, Fig. 2).

Analogous non-ansa oxides, [(η⁵-C₅H₄R)₂Mo₂O₄]₂ (where R = H or Me), were reported in previous literature (Prout et al., 1974, Prout & Daran, 1978, Adam & Green, 1981). In those cases, the tetranuclear molybdenum dimers were prepared by reaction of the respective molybdocene dichloride, (η⁵-C₅H₄R)₂MoCl₂, and sodium molybdate. The structure of the [(η⁵-C₅H₄Me)₂Mo₂O₄]₂ was determined by single crystal diffraction methods (Prout & Daran, 1978). The central framework in this compound is similar to that found in the title compound.

Related literature top

For related literature, see: Bruker (2000); Prout & Daran (1978); Adam & Green (1981); Daran & Prout (1977); Ahmed et al. (2007); Prout et al. (1974. It would be much more useful to readers if the "Related literature" section had some kind of simple sub-division, so that, instead of just "For related literature, see···;" it said, for example, "For general background, see···; For related structures, see···; etc. Please revise this section as indicated.

Experimental top

Ethyl acetate (7 ml) was added to an NMR tube containing [{C₂Me₄(η⁵5-C₅H₄)₂}Mo(OH)(OH₂)][C₇H₇SO₃] (0.0023 mg, 0.0026 mmol) in 0.50 ml D₂O. The mixture was allowed to react over two months at 323 K during which time the ethyl acetate was converted to ethanol and acetic acid. As the reaction proceeded, the mixture turned dark in color and crystalline needles of (I) suitable for X-ray analysis appeared on the NMR tube walls.

Computing details top

Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top

	Fig. 1. The structure of the [{C₂Me₄(η⁵-C₅H₄)₂}Mo₂O₄]₂ unit in (I) with 50% probability displacement ellipsoids [Symmetry code (i): 1-x,1-y,-z]. The H atoms were omitted for clarity.
	Fig. 2. The network of H-bonds (dashed lines) in the structure of (I).

Di-µ₃-oxido-di-µ₂-oxido-tetraoxidobis(1,1,2,2-tetramethylethylenedicyclopentadienyl)dimolybdenum(IV)dimolybdenum(VI) hexahydrate top

Crystal data top

[Mo₄(C₁₆H₂₀)₂O₈]·6H₂O	Z = 1
M_r = 1044.50	F(000) = 524
Triclinic, P1	D_x = 1.924 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 7.4106 (7) Å	Cell parameters from 6153 reflections
b = 9.3518 (8) Å	θ = 2.6–28.2°
c = 13.5735 (12) Å	µ = 1.43 mm⁻¹
α = 93.365 (1)°	T = 173 K
β = 98.604 (1)°	Cut block, orange
γ = 103.175 (1)°	0.30 × 0.09 × 0.07 mm
V = 901.39 (14) Å³

Data collection top

Bruker APEX CCD diffractometer	3916 independent reflections
Radiation source: fine-focus sealed tube	3621 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.014
ω scans	θ_max = 27.0°, θ_min = 1.5°
Absorption correction: multi-scan (SADABS; Bruker, 2000)	h = −9→9
T_min = 0.673, T_max = 0.907	k = −11→11
10175 measured reflections	l = −17→17

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.021	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.054	H atoms treated by a mixture of independent and constrained refinement
S = 1.09	w = 1/[σ²(F_o²) + (0.0277P)² + 0.6752P] where P = (F_o² + 2F_c²)/3
3916 reflections	(Δ/σ)_max = 0.001
250 parameters	Δρ_max = 0.46 e Å⁻³
0 restraints	Δρ_min = −0.41 e Å⁻³

Crystal data top

[Mo₄(C₁₆H₂₀)₂O₈]·6H₂O	γ = 103.175 (1)°
M_r = 1044.50	V = 901.39 (14) Å³
Triclinic, P1	Z = 1
a = 7.4106 (7) Å	Mo Kα radiation
b = 9.3518 (8) Å	µ = 1.43 mm⁻¹
c = 13.5735 (12) Å	T = 173 K
α = 93.365 (1)°	0.30 × 0.09 × 0.07 mm
β = 98.604 (1)°

Data collection top

Bruker APEX CCD diffractometer	3916 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2000)	3621 reflections with I > 2σ(I)
T_min = 0.673, T_max = 0.907	R_int = 0.014
10175 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.021	0 restraints
wR(F²) = 0.054	H atoms treated by a mixture of independent and constrained refinement
S = 1.09	Δρ_max = 0.46 e Å⁻³
3916 reflections	Δρ_min = −0.41 e Å⁻³
250 parameters

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)

are estimated using the full covariance matrix. The cell esds are taken

into account individually in the estimation of esds in distances, angles

and torsion angles; correlations between esds in cell parameters are only

used when they are defined by crystal symmetry. An approximate (isotropic)

treatment of cell esds is used for estimating esds 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 > 2sigma(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 (Å²) top

	x	y	z	U_iso*/U_eq
Mo1	0.29716 (2)	0.241010 (19)	0.116363 (13)	0.01106 (6)
Mo2	0.40229 (2)	0.365828 (19)	−0.091484 (13)	0.01260 (6)
O1	0.4426 (2)	0.42724 (16)	0.05904 (11)	0.0143 (3)
O2	0.2879 (2)	0.19918 (16)	−0.03835 (11)	0.0177 (3)
O3	0.2214 (2)	0.40535 (18)	−0.17230 (13)	0.0252 (4)
O4	0.5547 (3)	0.30518 (18)	−0.15855 (14)	0.0267 (4)
C1	0.3632 (3)	0.0962 (2)	0.23884 (16)	0.0145 (4)
C2	0.3911 (3)	0.0317 (2)	0.14559 (16)	0.0164 (4)
H2A	0.3272	−0.0696	0.1132	0.020*
C3	0.5455 (3)	0.1302 (3)	0.11548 (17)	0.0184 (5)
H3B	0.6036	0.1113	0.0556	0.022*
C4	0.6129 (3)	0.2517 (3)	0.18767 (17)	0.0181 (5)
H4B	0.7234	0.3356	0.1862	0.022*
C5	0.5003 (3)	0.2357 (2)	0.26298 (17)	0.0171 (4)
H5A	0.5205	0.3032	0.3256	0.021*
C6	0.0704 (3)	0.2045 (2)	0.21417 (16)	0.0149 (4)
C7	−0.0141 (3)	0.1375 (2)	0.11433 (16)	0.0156 (4)
H7A	−0.0799	0.0315	0.0951	0.019*
C8	−0.0106 (3)	0.2551 (3)	0.05167 (17)	0.0180 (5)
H8A	−0.0662	0.2437	−0.0210	0.022*
C9	0.0778 (3)	0.3893 (3)	0.10838 (18)	0.0196 (5)
H9A	0.0953	0.4889	0.0829	0.024*
C10	0.1328 (3)	0.3613 (2)	0.20837 (17)	0.0172 (4)
H10A	0.1881	0.4376	0.2663	0.021*
C11	0.2217 (3)	0.0245 (2)	0.30248 (16)	0.0162 (4)
C12	0.0833 (3)	0.1277 (2)	0.31082 (16)	0.0171 (4)
C13	0.3320 (4)	0.0042 (3)	0.40383 (18)	0.0244 (5)
H13A	0.4152	−0.0610	0.3933	0.037*
H13B	0.2439	−0.0397	0.4471	0.037*
H13C	0.4073	0.1003	0.4357	0.037*
C14	0.1182 (3)	−0.1308 (2)	0.25306 (18)	0.0208 (5)
H14A	0.2091	−0.1916	0.2493	0.031*
H14B	0.0551	−0.1234	0.1854	0.031*
H14C	0.0248	−0.1763	0.2930	0.031*
C15	−0.1156 (3)	0.0416 (3)	0.3224 (2)	0.0258 (5)
H15A	−0.1963	0.1106	0.3272	0.039*
H15B	−0.1079	−0.0098	0.3831	0.039*
H15C	−0.1688	−0.0306	0.2640	0.039*
C16	0.1514 (4)	0.2459 (3)	0.40115 (18)	0.0265 (5)
H16A	0.0605	0.3070	0.4029	0.040*
H16B	0.2741	0.3081	0.3948	0.040*
H16C	0.1630	0.1975	0.4631	0.040*
O1S	0.8478 (3)	0.5646 (2)	0.37887 (16)	0.0327 (4)
O2S	0.4926 (4)	0.6405 (3)	0.36850 (19)	0.0472 (6)
O3S	0.2122 (3)	0.6526 (2)	0.48301 (17)	0.0336 (4)
H1S	0.843 (4)	0.569 (3)	0.319 (3)	0.032 (9)*
H2S	0.951 (6)	0.596 (4)	0.402 (3)	0.051 (12)*
H3S	0.592 (6)	0.631 (5)	0.380 (3)	0.063 (14)*
H4S	0.483 (5)	0.668 (4)	0.317 (3)	0.047 (11)*
H5S	0.219 (5)	0.596 (4)	0.526 (3)	0.038 (9)*
H6S	0.296 (5)	0.646 (4)	0.453 (3)	0.041 (10)*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Mo1	0.00936 (9)	0.01184 (10)	0.01173 (10)	0.00140 (7)	0.00206 (7)	0.00287 (7)
Mo2	0.01369 (10)	0.01183 (10)	0.01116 (10)	0.00041 (7)	0.00266 (7)	0.00113 (7)
O1	0.0162 (8)	0.0134 (7)	0.0109 (7)	−0.0019 (6)	0.0029 (6)	0.0023 (6)
O2	0.0212 (8)	0.0147 (8)	0.0137 (7)	−0.0026 (6)	0.0032 (6)	0.0012 (6)
O3	0.0246 (9)	0.0191 (8)	0.0254 (9)	−0.0005 (7)	−0.0079 (7)	0.0040 (7)
O4	0.0319 (10)	0.0184 (8)	0.0336 (10)	0.0051 (7)	0.0195 (8)	0.0007 (7)
C1	0.0126 (10)	0.0155 (10)	0.0162 (10)	0.0058 (8)	0.0002 (8)	0.0048 (8)
C2	0.0162 (11)	0.0137 (10)	0.0205 (11)	0.0055 (8)	0.0033 (9)	0.0030 (8)
C3	0.0128 (10)	0.0220 (11)	0.0229 (12)	0.0073 (9)	0.0048 (9)	0.0055 (9)
C4	0.0097 (10)	0.0200 (11)	0.0251 (12)	0.0050 (8)	0.0002 (8)	0.0067 (9)
C5	0.0135 (10)	0.0182 (11)	0.0186 (11)	0.0044 (8)	−0.0023 (8)	0.0032 (8)
C6	0.0113 (10)	0.0169 (11)	0.0185 (11)	0.0049 (8)	0.0058 (8)	0.0037 (8)
C7	0.0090 (10)	0.0208 (11)	0.0176 (11)	0.0030 (8)	0.0034 (8)	0.0052 (9)
C8	0.0098 (10)	0.0252 (12)	0.0201 (11)	0.0053 (9)	0.0013 (8)	0.0084 (9)
C9	0.0144 (11)	0.0204 (11)	0.0286 (13)	0.0089 (9)	0.0071 (9)	0.0111 (9)
C10	0.0139 (10)	0.0160 (11)	0.0231 (12)	0.0051 (8)	0.0055 (9)	0.0022 (9)
C11	0.0165 (10)	0.0175 (11)	0.0150 (10)	0.0039 (8)	0.0031 (8)	0.0058 (8)
C12	0.0200 (11)	0.0195 (11)	0.0141 (10)	0.0060 (9)	0.0062 (8)	0.0055 (8)
C13	0.0262 (13)	0.0291 (13)	0.0189 (12)	0.0083 (10)	0.0011 (10)	0.0098 (10)
C14	0.0210 (12)	0.0158 (11)	0.0251 (12)	0.0010 (9)	0.0063 (9)	0.0052 (9)
C15	0.0217 (12)	0.0334 (14)	0.0283 (13)	0.0103 (10)	0.0125 (10)	0.0153 (11)
C16	0.0353 (14)	0.0311 (14)	0.0162 (11)	0.0124 (11)	0.0072 (10)	0.0015 (10)
O1S	0.0298 (12)	0.0441 (12)	0.0231 (11)	0.0051 (9)	0.0032 (9)	0.0115 (9)
O2S	0.0370 (14)	0.0829 (19)	0.0293 (12)	0.0235 (13)	0.0123 (10)	0.0135 (12)
O3S	0.0328 (11)	0.0361 (11)	0.0341 (11)	0.0074 (9)	0.0109 (9)	0.0124 (9)

Geometric parameters (Å, º) top

Mo1—O1	2.0869 (14)	C7—C8	1.428 (3)
Mo1—O2	2.1014 (15)	C7—H7A	1.0000
Mo1—C2	2.259 (2)	C8—C9	1.399 (3)
Mo1—C6	2.272 (2)	C8—H8A	1.0000
Mo1—C1	2.272 (2)	C9—C10	1.415 (3)
Mo1—C7	2.284 (2)	C9—H9A	1.0000
Mo1—C10	2.286 (2)	C10—H10A	1.0000
Mo1—C3	2.310 (2)	C11—C13	1.537 (3)
Mo1—C5	2.319 (2)	C11—C14	1.540 (3)
Mo1—C8	2.354 (2)	C11—C12	1.572 (3)
Mo1—C9	2.360 (2)	C12—C16	1.543 (3)
Mo1—C4	2.372 (2)	C12—C15	1.545 (3)
Mo2—O4	1.7217 (16)	C13—H13A	0.9800
Mo2—O3	1.7237 (16)	C13—H13B	0.9800
Mo2—O2	1.8385 (15)	C13—H13C	0.9800
Mo2—O1ⁱ	1.9986 (14)	C14—H14A	0.9800
Mo2—O1	2.0481 (15)	C14—H14B	0.9800
O1—Mo2ⁱ	1.9985 (14)	C14—H14C	0.9800
C1—C2	1.433 (3)	C15—H15A	0.9800
C1—C5	1.445 (3)	C15—H15B	0.9800
C1—C11	1.521 (3)	C15—H15C	0.9800
C2—C3	1.424 (3)	C16—H16A	0.9800
C2—H2A	1.0000	C16—H16B	0.9800
C3—C4	1.402 (3)	C16—H16C	0.9800
C3—H3B	1.0000	O1S—H1S	0.82 (3)
C4—C5	1.407 (3)	O1S—H2S	0.76 (4)
C4—H4B	1.0000	O2S—H3S	0.76 (4)
C5—H5A	1.0000	O2S—H4S	0.76 (4)
C6—C10	1.444 (3)	O3S—H5S	0.81 (4)
C6—C7	1.445 (3)	O3S—H6S	0.80 (4)
C6—C12	1.533 (3)

O1—Mo1—O2	69.58 (6)	C1—C2—H2A	126.2
O1—Mo1—C2	127.58 (7)	Mo1—C2—H2A	126.2
O2—Mo1—C2	91.12 (7)	C4—C3—C2	109.1 (2)
O1—Mo1—C6	133.26 (7)	C4—C3—Mo1	75.01 (13)
O2—Mo1—C6	132.42 (7)	C2—C3—Mo1	69.91 (12)
C2—Mo1—C6	96.13 (8)	C4—C3—H3B	125.3
O1—Mo1—C1	136.34 (7)	C2—C3—H3B	125.3
O2—Mo1—C1	127.87 (7)	Mo1—C3—H3B	125.3
C2—Mo1—C1	36.88 (8)	C3—C4—C5	108.7 (2)
C6—Mo1—C1	69.27 (8)	C3—C4—Mo1	70.18 (12)
O1—Mo1—C7	133.87 (7)	C5—C4—Mo1	70.51 (12)
O2—Mo1—C7	95.63 (7)	C3—C4—H4B	125.6
C2—Mo1—C7	94.87 (8)	C5—C4—H4B	125.6
C6—Mo1—C7	36.99 (8)	Mo1—C4—H4B	125.6
C1—Mo1—C7	87.77 (8)	C4—C5—C1	107.6 (2)
O1—Mo1—C10	96.48 (7)	C4—C5—Mo1	74.60 (13)
O2—Mo1—C10	132.96 (7)	C1—C5—Mo1	69.88 (12)
C2—Mo1—C10	128.54 (8)	C4—C5—H5A	126.0
C6—Mo1—C10	36.95 (8)	C1—C5—H5A	126.0
C1—Mo1—C10	93.79 (8)	Mo1—C5—H5A	126.0
C7—Mo1—C10	61.30 (8)	C10—C6—C7	107.47 (19)
O1—Mo1—C3	91.40 (7)	C10—C6—C12	125.1 (2)
O2—Mo1—C3	79.28 (7)	C7—C6—C12	127.30 (19)
C2—Mo1—C3	36.30 (8)	C10—C6—Mo1	72.04 (12)
C6—Mo1—C3	128.90 (8)	C7—C6—Mo1	71.97 (12)
C1—Mo1—C3	60.16 (8)	C12—C6—Mo1	124.10 (14)
C7—Mo1—C3	129.81 (8)	C8—C7—C6	106.60 (19)
C10—Mo1—C3	147.47 (8)	C8—C7—Mo1	74.77 (12)
O1—Mo1—C5	101.32 (7)	C6—C7—Mo1	71.04 (12)
O2—Mo1—C5	137.56 (7)	C8—C7—H7A	126.4
C2—Mo1—C5	60.90 (8)	C6—C7—H7A	126.4
C6—Mo1—C5	84.85 (8)	Mo1—C7—H7A	126.4
C1—Mo1—C5	36.67 (8)	C9—C8—C7	109.4 (2)
C7—Mo1—C5	116.53 (8)	C9—C8—Mo1	72.97 (12)
C10—Mo1—C5	88.38 (8)	C7—C8—Mo1	69.42 (12)
C3—Mo1—C5	59.11 (8)	C9—C8—H8A	125.3
O1—Mo1—C8	98.21 (7)	C7—C8—H8A	125.3
O2—Mo1—C8	78.13 (7)	Mo1—C8—H8A	125.3
C2—Mo1—C8	125.79 (8)	C8—C9—C10	108.8 (2)
C6—Mo1—C8	59.69 (8)	C8—C9—Mo1	72.50 (13)
C1—Mo1—C8	123.14 (8)	C10—C9—Mo1	69.41 (12)
C7—Mo1—C8	35.81 (7)	C8—C9—H9A	125.6
C10—Mo1—C8	59.07 (8)	C10—C9—H9A	125.6
C3—Mo1—C8	150.51 (8)	Mo1—C9—H9A	125.6
C5—Mo1—C8	143.69 (8)	C9—C10—C6	107.6 (2)
O1—Mo1—C9	78.84 (7)	C9—C10—Mo1	75.18 (13)
O2—Mo1—C9	97.77 (7)	C6—C10—Mo1	71.01 (12)
C2—Mo1—C9	153.50 (8)	C9—C10—H10A	125.9
C6—Mo1—C9	59.71 (8)	C6—C10—H10A	125.9
C1—Mo1—C9	127.20 (8)	Mo1—C10—H10A	125.9
C7—Mo1—C9	59.55 (8)	C1—C11—C13	107.72 (18)
C10—Mo1—C9	35.41 (8)	C1—C11—C14	109.32 (18)
C3—Mo1—C9	170.20 (8)	C13—C11—C14	106.88 (19)
C5—Mo1—C9	121.75 (8)	C1—C11—C12	107.16 (17)
C8—Mo1—C9	34.53 (8)	C13—C11—C12	113.68 (19)
O1—Mo1—C4	78.20 (7)	C14—C11—C12	111.97 (18)
O2—Mo1—C4	104.43 (7)	C6—C12—C16	109.04 (19)
C2—Mo1—C4	59.57 (8)	C6—C12—C15	109.10 (18)
C6—Mo1—C4	119.70 (8)	C16—C12—C15	106.4 (2)
C1—Mo1—C4	59.39 (8)	C6—C12—C11	106.92 (17)
C7—Mo1—C4	147.17 (8)	C16—C12—C11	112.75 (19)
C10—Mo1—C4	116.66 (8)	C15—C12—C11	112.60 (19)
C3—Mo1—C4	34.82 (8)	C11—C13—H13A	109.5
C5—Mo1—C4	34.89 (8)	C11—C13—H13B	109.5
C8—Mo1—C4	174.32 (8)	H13A—C13—H13B	109.5
C9—Mo1—C4	139.82 (8)	C11—C13—H13C	109.5
O4—Mo2—O3	109.85 (9)	H13A—C13—H13C	109.5
O4—Mo2—O2	103.42 (8)	H13B—C13—H13C	109.5
O3—Mo2—O2	103.62 (8)	C11—C14—H14A	109.5
O4—Mo2—O1ⁱ	95.84 (7)	C11—C14—H14B	109.5
O3—Mo2—O1ⁱ	97.04 (7)	H14A—C14—H14B	109.5
O2—Mo2—O1ⁱ	144.73 (6)	C11—C14—H14C	109.5
O4—Mo2—O1	127.83 (8)	H14A—C14—H14C	109.5
O3—Mo2—O1	121.19 (8)	H14B—C14—H14C	109.5
O2—Mo2—O1	75.67 (6)	C12—C15—H15A	109.5
O1ⁱ—Mo2—O1	69.18 (7)	C12—C15—H15B	109.5
Mo2ⁱ—O1—Mo2	110.82 (7)	H15A—C15—H15B	109.5
Mo2ⁱ—O1—Mo1	145.59 (8)	C12—C15—H15C	109.5
Mo2—O1—Mo1	103.59 (6)	H15A—C15—H15C	109.5
Mo2—O2—Mo1	110.95 (7)	H15B—C15—H15C	109.5
C2—C1—C5	107.47 (19)	C12—C16—H16A	109.5
C2—C1—C11	125.40 (19)	C12—C16—H16B	109.5
C5—C1—C11	127.0 (2)	H16A—C16—H16B	109.5
C2—C1—Mo1	71.08 (12)	C12—C16—H16C	109.5
C5—C1—Mo1	73.45 (12)	H16A—C16—H16C	109.5
C11—C1—Mo1	123.64 (14)	H16B—C16—H16C	109.5
C3—C2—C1	106.98 (19)	H1S—O1S—H2S	105 (3)
C3—C2—Mo1	73.79 (13)	H3S—O2S—H4S	106 (4)
C1—C2—Mo1	72.03 (12)	H5S—O3S—H6S	105 (3)
C3—C2—H2A	126.2

O4—Mo2—O1—Mo2ⁱ	80.94 (10)	O2—Mo1—C5—C1	−93.12 (14)
O3—Mo2—O1—Mo2ⁱ	−85.59 (9)	C2—Mo1—C5—C1	−38.26 (12)
O2—Mo2—O1—Mo2ⁱ	176.97 (9)	C6—Mo1—C5—C1	61.70 (13)
O1ⁱ—Mo2—O1—Mo2ⁱ	0.0	C7—Mo1—C5—C1	41.99 (15)
O4—Mo2—O1—Mo1	−99.53 (9)	C10—Mo1—C5—C1	98.55 (13)
O3—Mo2—O1—Mo1	93.93 (9)	C3—Mo1—C5—C1	−80.37 (14)
O2—Mo2—O1—Mo1	−3.51 (6)	C8—Mo1—C5—C1	73.63 (18)
O1ⁱ—Mo2—O1—Mo1	179.52 (12)	C9—Mo1—C5—C1	111.06 (13)
O2—Mo1—O1—Mo2ⁱ	−177.62 (16)	C4—Mo1—C5—C1	−115.83 (19)
C2—Mo1—O1—Mo2ⁱ	−102.69 (15)	O1—Mo1—C6—C10	−6.53 (17)
C6—Mo1—O1—Mo2ⁱ	52.73 (18)	O2—Mo1—C6—C10	−108.72 (13)
C1—Mo1—O1—Mo2ⁱ	−53.65 (19)	C2—Mo1—C6—C10	154.11 (13)
C7—Mo1—O1—Mo2ⁱ	104.65 (15)	C1—Mo1—C6—C10	128.38 (14)
C10—Mo1—O1—Mo2ⁱ	48.79 (15)	C7—Mo1—C6—C10	−115.94 (18)
C3—Mo1—O1—Mo2ⁱ	−99.60 (15)	C3—Mo1—C6—C10	136.84 (13)
C5—Mo1—O1—Mo2ⁱ	−40.86 (16)	C5—Mo1—C6—C10	94.17 (13)
C8—Mo1—O1—Mo2ⁱ	108.37 (15)	C8—Mo1—C6—C10	−77.68 (14)
C9—Mo1—O1—Mo2ⁱ	79.64 (15)	C9—Mo1—C6—C10	−37.48 (13)
C4—Mo1—O1—Mo2ⁱ	−67.17 (15)	C4—Mo1—C6—C10	95.80 (14)
O2—Mo1—O1—Mo2	3.17 (6)	O1—Mo1—C6—C7	109.41 (13)
C2—Mo1—O1—Mo2	78.09 (10)	O2—Mo1—C6—C7	7.22 (16)
C6—Mo1—O1—Mo2	−126.48 (9)	C2—Mo1—C6—C7	−89.95 (13)
C1—Mo1—O1—Mo2	127.14 (9)	C1—Mo1—C6—C7	−115.69 (14)
C7—Mo1—O1—Mo2	−74.56 (11)	C10—Mo1—C6—C7	115.94 (18)
C10—Mo1—O1—Mo2	−130.42 (8)	C3—Mo1—C6—C7	−107.22 (14)
C3—Mo1—O1—Mo2	81.19 (8)	C5—Mo1—C6—C7	−149.89 (13)
C5—Mo1—O1—Mo2	139.93 (8)	C8—Mo1—C6—C7	38.25 (12)
C8—Mo1—O1—Mo2	−70.84 (8)	C9—Mo1—C6—C7	78.46 (13)
C9—Mo1—O1—Mo2	−99.57 (8)	C4—Mo1—C6—C7	−148.27 (12)
C4—Mo1—O1—Mo2	113.62 (8)	O1—Mo1—C6—C12	−127.28 (16)
O4—Mo2—O2—Mo1	129.77 (9)	O2—Mo1—C6—C12	130.54 (16)
O3—Mo2—O2—Mo1	−115.59 (9)	C2—Mo1—C6—C12	33.37 (18)
O1ⁱ—Mo2—O2—Mo1	8.53 (16)	C1—Mo1—C6—C12	7.63 (17)
O1—Mo2—O2—Mo1	3.62 (7)	C7—Mo1—C6—C12	123.3 (2)
O1—Mo1—O2—Mo2	−3.68 (7)	C10—Mo1—C6—C12	−120.7 (2)
C2—Mo1—O2—Mo2	−133.74 (9)	C3—Mo1—C6—C12	16.1 (2)
C6—Mo1—O2—Mo2	126.90 (9)	C5—Mo1—C6—C12	−26.57 (18)
C1—Mo1—O2—Mo2	−137.18 (9)	C8—Mo1—C6—C12	161.6 (2)
C7—Mo1—O2—Mo2	131.26 (9)	C9—Mo1—C6—C12	−158.2 (2)
C10—Mo1—O2—Mo2	75.83 (12)	C4—Mo1—C6—C12	−24.9 (2)
C3—Mo1—O2—Mo2	−99.24 (9)	C10—C6—C7—C8	−3.2 (2)
C5—Mo1—O2—Mo2	−88.12 (12)	C12—C6—C7—C8	173.5 (2)
C8—Mo1—O2—Mo2	99.85 (9)	Mo1—C6—C7—C8	−66.90 (14)
C9—Mo1—O2—Mo2	71.29 (9)	C10—C6—C7—Mo1	63.74 (14)
C4—Mo1—O2—Mo2	−74.94 (9)	C12—C6—C7—Mo1	−119.5 (2)
O1—Mo1—C1—C2	−94.33 (14)	O1—Mo1—C7—C8	6.30 (17)
O2—Mo1—C1—C2	5.73 (16)	O2—Mo1—C7—C8	−60.66 (13)
C6—Mo1—C1—C2	134.00 (14)	C2—Mo1—C7—C8	−152.27 (14)
C7—Mo1—C1—C2	101.14 (13)	C6—Mo1—C7—C8	113.99 (19)
C10—Mo1—C1—C2	162.19 (13)	C1—Mo1—C7—C8	171.50 (14)
C3—Mo1—C1—C2	−38.41 (12)	C10—Mo1—C7—C8	75.95 (14)
C5—Mo1—C1—C2	−115.66 (18)	C3—Mo1—C7—C8	−141.40 (14)
C8—Mo1—C1—C2	107.07 (14)	C5—Mo1—C7—C8	147.93 (13)
C9—Mo1—C1—C2	149.37 (13)	C9—Mo1—C7—C8	35.06 (13)
C4—Mo1—C1—C2	−78.92 (13)	C4—Mo1—C7—C8	171.41 (14)
O1—Mo1—C1—C5	21.33 (17)	O1—Mo1—C7—C6	−107.69 (13)
O2—Mo1—C1—C5	121.39 (13)	O2—Mo1—C7—C6	−174.65 (12)
C2—Mo1—C1—C5	115.66 (18)	C2—Mo1—C7—C6	93.74 (13)
C6—Mo1—C1—C5	−110.34 (14)	C1—Mo1—C7—C6	57.51 (13)
C7—Mo1—C1—C5	−143.20 (13)	C10—Mo1—C7—C6	−38.04 (12)
C10—Mo1—C1—C5	−82.16 (13)	C3—Mo1—C7—C6	104.61 (14)
C3—Mo1—C1—C5	77.25 (14)	C5—Mo1—C7—C6	33.94 (15)
C8—Mo1—C1—C5	−137.27 (13)	C8—Mo1—C7—C6	−113.99 (19)
C9—Mo1—C1—C5	−94.98 (14)	C9—Mo1—C7—C6	−78.93 (13)
C4—Mo1—C1—C5	36.74 (12)	C4—Mo1—C7—C6	57.4 (2)
O1—Mo1—C1—C11	145.17 (15)	C6—C7—C8—C9	2.0 (2)
O2—Mo1—C1—C11	−114.77 (17)	Mo1—C7—C8—C9	−62.35 (16)
C2—Mo1—C1—C11	−120.5 (2)	C6—C7—C8—Mo1	64.37 (14)
C6—Mo1—C1—C11	13.50 (16)	O1—Mo1—C8—C9	−56.30 (14)
C7—Mo1—C1—C11	−19.36 (18)	O2—Mo1—C8—C9	−123.32 (14)
C10—Mo1—C1—C11	41.68 (18)	C2—Mo1—C8—C9	153.97 (13)
C3—Mo1—C1—C11	−158.9 (2)	C6—Mo1—C8—C9	79.57 (14)
C5—Mo1—C1—C11	123.8 (2)	C1—Mo1—C8—C9	108.95 (14)
C8—Mo1—C1—C11	−13.4 (2)	C7—Mo1—C8—C9	119.12 (19)
C9—Mo1—C1—C11	28.9 (2)	C10—Mo1—C8—C9	36.36 (13)
C4—Mo1—C1—C11	160.6 (2)	C3—Mo1—C8—C9	−164.06 (15)
C5—C1—C2—C3	1.1 (2)	C5—Mo1—C8—C9	65.78 (19)
C11—C1—C2—C3	−175.59 (19)	O1—Mo1—C8—C7	−175.42 (13)
Mo1—C1—C2—C3	66.06 (15)	O2—Mo1—C8—C7	117.57 (13)
C5—C1—C2—Mo1	−64.94 (14)	C2—Mo1—C8—C7	34.86 (17)
C11—C1—C2—Mo1	118.4 (2)	C6—Mo1—C8—C7	−39.55 (13)
O1—Mo1—C2—C3	5.24 (16)	C1—Mo1—C8—C7	−10.16 (17)
O2—Mo1—C2—C3	70.07 (13)	C10—Mo1—C8—C7	−82.75 (14)
C6—Mo1—C2—C3	−157.03 (13)	C3—Mo1—C8—C7	76.8 (2)
C1—Mo1—C2—C3	−114.45 (19)	C5—Mo1—C8—C7	−53.3 (2)
C7—Mo1—C2—C3	165.83 (14)	C9—Mo1—C8—C7	−119.12 (19)
C10—Mo1—C2—C3	−137.42 (13)	C7—C8—C9—C10	−0.1 (3)
C5—Mo1—C2—C3	−76.42 (14)	Mo1—C8—C9—C10	−60.21 (15)
C8—Mo1—C2—C3	146.22 (13)	C7—C8—C9—Mo1	60.14 (15)
C9—Mo1—C2—C3	−179.91 (17)	O1—Mo1—C9—C8	122.93 (14)
C4—Mo1—C2—C3	−36.04 (13)	O2—Mo1—C9—C8	55.62 (13)
O1—Mo1—C2—C1	119.69 (12)	C2—Mo1—C9—C8	−52.9 (2)
O2—Mo1—C2—C1	−175.47 (12)	C6—Mo1—C9—C8	−79.51 (14)
C6—Mo1—C2—C1	−42.58 (13)	C1—Mo1—C9—C8	−96.18 (15)
C7—Mo1—C2—C1	−79.72 (13)	C7—Mo1—C9—C8	−36.36 (13)
C10—Mo1—C2—C1	−22.97 (16)	C10—Mo1—C9—C8	−118.64 (19)
C3—Mo1—C2—C1	114.45 (19)	C5—Mo1—C9—C8	−140.58 (13)
C5—Mo1—C2—C1	38.03 (12)	C4—Mo1—C9—C8	179.09 (13)
C8—Mo1—C2—C1	−99.33 (14)	O1—Mo1—C9—C10	−118.43 (13)
C9—Mo1—C2—C1	−65.5 (2)	O2—Mo1—C9—C10	174.27 (13)
C4—Mo1—C2—C1	78.41 (13)	C2—Mo1—C9—C10	65.7 (2)
C1—C2—C3—C4	0.4 (2)	C6—Mo1—C9—C10	39.13 (13)
Mo1—C2—C3—C4	65.27 (16)	C1—Mo1—C9—C10	22.46 (17)
C1—C2—C3—Mo1	−64.87 (14)	C7—Mo1—C9—C10	82.28 (14)
O1—Mo1—C3—C4	66.83 (13)	C5—Mo1—C9—C10	−21.94 (16)
O2—Mo1—C3—C4	135.74 (14)	C8—Mo1—C9—C10	118.64 (19)
C2—Mo1—C3—C4	−117.32 (19)	C4—Mo1—C9—C10	−62.27 (18)
C6—Mo1—C3—C4	−87.41 (15)	C8—C9—C10—C6	−1.9 (2)
C1—Mo1—C3—C4	−78.28 (14)	Mo1—C9—C10—C6	−64.08 (14)
C7—Mo1—C3—C4	−135.84 (13)	C8—C9—C10—Mo1	62.15 (16)
C10—Mo1—C3—C4	−37.5 (2)	C7—C6—C10—C9	3.2 (2)
C5—Mo1—C3—C4	−35.54 (13)	C12—C6—C10—C9	−173.64 (19)
C8—Mo1—C3—C4	176.29 (14)	Mo1—C6—C10—C9	66.86 (15)
O1—Mo1—C3—C2	−175.85 (13)	C7—C6—C10—Mo1	−63.70 (14)
O2—Mo1—C3—C2	−106.93 (13)	C12—C6—C10—Mo1	119.5 (2)
C6—Mo1—C3—C2	29.91 (17)	O1—Mo1—C10—C9	60.26 (13)
C1—Mo1—C3—C2	39.04 (13)	O2—Mo1—C10—C9	−7.77 (17)
C7—Mo1—C3—C2	−18.52 (17)	C2—Mo1—C10—C9	−148.67 (13)
C10—Mo1—C3—C2	79.78 (19)	C6—Mo1—C10—C9	−114.96 (19)
C5—Mo1—C3—C2	81.79 (14)	C1—Mo1—C10—C9	−162.24 (13)
C8—Mo1—C3—C2	−66.4 (2)	C7—Mo1—C10—C9	−76.87 (14)
C4—Mo1—C3—C2	117.32 (19)	C3—Mo1—C10—C9	163.19 (15)
C2—C3—C4—C5	−1.8 (3)	C5—Mo1—C10—C9	161.47 (14)
Mo1—C3—C4—C5	60.21 (15)	C8—Mo1—C10—C9	−35.44 (13)
C2—C3—C4—Mo1	−62.02 (15)	C4—Mo1—C10—C9	140.28 (13)
O1—Mo1—C4—C3	−110.13 (14)	O1—Mo1—C10—C6	175.22 (12)
O2—Mo1—C4—C3	−45.07 (14)	O2—Mo1—C10—C6	107.18 (13)
C2—Mo1—C4—C3	37.59 (13)	C2—Mo1—C10—C6	−33.71 (16)
C6—Mo1—C4—C3	116.49 (14)	C1—Mo1—C10—C6	−47.29 (13)
C1—Mo1—C4—C3	80.68 (14)	C7—Mo1—C10—C6	38.08 (12)
C7—Mo1—C4—C3	80.78 (19)	C3—Mo1—C10—C6	−81.86 (19)
C10—Mo1—C4—C3	158.49 (13)	C5—Mo1—C10—C6	−83.57 (13)
C5—Mo1—C4—C3	119.3 (2)	C8—Mo1—C10—C6	79.51 (14)
C9—Mo1—C4—C3	−166.48 (13)	C9—Mo1—C10—C6	114.96 (19)
O1—Mo1—C4—C5	130.55 (14)	C4—Mo1—C10—C6	−104.76 (13)
O2—Mo1—C4—C5	−164.39 (12)	C2—C1—C11—C13	117.9 (2)
C2—Mo1—C4—C5	−81.73 (14)	C5—C1—C11—C13	−58.1 (3)
C6—Mo1—C4—C5	−2.83 (16)	Mo1—C1—C11—C13	−152.36 (16)
C1—Mo1—C4—C5	−38.64 (13)	C2—C1—C11—C14	2.1 (3)
C7—Mo1—C4—C5	−38.5 (2)	C5—C1—C11—C14	−173.9 (2)
C10—Mo1—C4—C5	39.17 (15)	Mo1—C1—C11—C14	91.9 (2)
C3—Mo1—C4—C5	−119.3 (2)	C2—C1—C11—C12	−119.4 (2)
C9—Mo1—C4—C5	74.20 (17)	C5—C1—C11—C12	64.5 (3)
C3—C4—C5—C1	2.5 (2)	Mo1—C1—C11—C12	−29.7 (2)
Mo1—C4—C5—C1	62.48 (14)	C10—C6—C12—C16	6.5 (3)
C3—C4—C5—Mo1	−60.01 (15)	C7—C6—C12—C16	−169.6 (2)
C2—C1—C5—C4	−2.2 (2)	Mo1—C6—C12—C16	97.7 (2)
C11—C1—C5—C4	174.4 (2)	C10—C6—C12—C15	122.3 (2)
Mo1—C1—C5—C4	−65.59 (15)	C7—C6—C12—C15	−53.8 (3)
C2—C1—C5—Mo1	63.38 (14)	Mo1—C6—C12—C15	−146.47 (17)
C11—C1—C5—Mo1	−120.0 (2)	C10—C6—C12—C11	−115.6 (2)
O1—Mo1—C5—C4	−49.33 (14)	C7—C6—C12—C11	68.2 (3)
O2—Mo1—C5—C4	22.71 (18)	Mo1—C6—C12—C11	−24.4 (2)
C2—Mo1—C5—C4	77.57 (14)	C1—C11—C12—C6	30.3 (2)
C6—Mo1—C5—C4	177.53 (14)	C13—C11—C12—C6	149.24 (19)
C1—Mo1—C5—C4	115.83 (19)	C14—C11—C12—C6	−89.5 (2)
C7—Mo1—C5—C4	157.82 (13)	C1—C11—C12—C16	−89.5 (2)
C10—Mo1—C5—C4	−145.62 (14)	C13—C11—C12—C16	29.4 (3)
C3—Mo1—C5—C4	35.46 (13)	C14—C11—C12—C16	150.66 (19)
C8—Mo1—C5—C4	−170.54 (13)	C1—C11—C12—C15	150.16 (19)
C9—Mo1—C5—C4	−133.11 (13)	C13—C11—C12—C15	−91.0 (2)
O1—Mo1—C5—C1	−165.16 (12)	C14—C11—C12—C15	30.3 (3)

Symmetry code: (i) −x+1, −y+1, −z.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1S—H2S···O3Sⁱⁱ	0.76 (4)	2.02 (4)	2.771 (3)	169 (4)
O3S—H6S···O2S	0.80 (4)	1.99 (4)	2.792 (3)	175 (3)
O2S—H4S···O4ⁱ	0.76 (4)	2.16 (4)	2.908 (3)	167 (4)
O3S—H5S···O1Sⁱⁱⁱ	0.81 (4)	2.06 (4)	2.850 (3)	163 (3)
O2S—H3S···O1S	0.76 (4)	2.12 (4)	2.865 (3)	165 (4)
O1S—H1S···O3ⁱ	0.82 (3)	2.01 (3)	2.816 (3)	167 (3)

Symmetry codes: (i) −x+1, −y+1, −z; (ii) x+1, y, z; (iii) −x+1, −y+1, −z+1.

Experimental details

Crystal data
Chemical formula	[Mo₄(C₁₆H₂₀)₂O₈]·6H₂O
M_r	1044.50
Crystal system, space group	Triclinic, P1
Temperature (K)	173
a, b, c (Å)	7.4106 (7), 9.3518 (8), 13.5735 (12)
α, β, γ (°)	93.365 (1), 98.604 (1), 103.175 (1)
V (Å³)	901.39 (14)
Z	1
Radiation type	Mo Kα
µ (mm⁻¹)	1.43
Crystal size (mm)	0.30 × 0.09 × 0.07

Data collection
Diffractometer	Bruker APEX CCD diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2000)
T_min, T_max	0.673, 0.907
No. of measured, independent and observed [I > 2σ(I)] reflections	10175, 3916, 3621
R_int	0.014
(sin θ/λ)_max (Å⁻¹)	0.639

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.021, 0.054, 1.09
No. of reflections	3916
No. of parameters	250
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.46, −0.41

Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXTL (Sheldrick, 2008).

Selected bond lengths (Å) top

Mo1—O1	2.0869 (14)	Mo2—O2	1.8385 (15)
Mo1—O2	2.1014 (15)	Mo2—O1ⁱ	1.9986 (14)
Mo2—O4	1.7217 (16)	Mo2—O1	2.0481 (15)
Mo2—O3	1.7237 (16)

Symmetry code: (i) −x+1, −y+1, −z.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1S—H2S···O3Sⁱⁱ	0.76 (4)	2.02 (4)	2.771 (3)	169 (4)
O3S—H6S···O2S	0.80 (4)	1.99 (4)	2.792 (3)	175 (3)
O2S—H4S···O4ⁱ	0.76 (4)	2.16 (4)	2.908 (3)	167 (4)
O3S—H5S···O1Sⁱⁱⁱ	0.81 (4)	2.06 (4)	2.850 (3)	163 (3)
O2S—H3S···O1S	0.76 (4)	2.12 (4)	2.865 (3)	165 (4)
O1S—H1S···O3ⁱ	0.82 (3)	2.01 (3)	2.816 (3)	167 (3)

Symmetry codes: (i) −x+1, −y+1, −z; (ii) x+1, y, z; (iii) −x+1, −y+1, −z+1.

Acknowledgements

We thank the NSF for funding.

References

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