Diethyl 4,5-diphenyl-3,6-bis-(trimethyl-sil-yl)benzene-1,2-dicarboxyl-ate.

In the title compound, C(30)H(38)O(4)Si(2), the two phenyl rings are twisted away from the central benzene ring by 70.28 (8) and 67.42 (7)°. The two Si atoms attached to the benzene ring deviate in opposite directions from the ring plane by 0.258 (3) and 0.206 (3) Å, respectively. One ethyl group is disordered over two conformations in a 0.568 (5):0.432 (5) ratio. The crystal packing exhibits weak inter-molecular C-H⋯O inter-actions.

Related literature

For general background to the synthesis of benzene compounds, see: Reppe & Schweckendiek (1948 ▶); Reppe et al. (1948 ▶); Schore (1988 ▶); Vollhardt (1984 ▶); Yamamoto (2005 ▶). For related structures, see: Haberecht et al. (2002 ▶); Takahashi et al. (2006 ▶).

Experimental

Crystal data

C30H38O4Si2

M = 518.78

Triclinic,

a = 11.534 (2) Å

b = 12.389 (3) Å

c = 12.853 (3) Å

α = 63.40 (3)°

β = 67.63 (3)°

γ = 65.99 (3)°

V = 1455.1 (5) Å3

Z = 2

Mo Kα radiation

μ = 0.15 mm−1

T = 113 K

0.20 × 0.18 × 0.12 mm

Data collection

Rigaku Saturn CCD area-detector diffractometer

Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005 ▶) T min = 0.970, T max = 0.982

12066 measured reflections

6772 independent reflections

3380 reflections with I > 2σ(I)

R int = 0.047

Refinement

R[F 2 > 2σ(F 2)] = 0.046

wR(F 2) = 0.127

S = 0.95

6772 reflections

338 parameters

4 restraints

H-atom parameters constrained

Δρmax = 0.31 e Å−3

Δρmin = −0.38 e Å−3

Data collection: CrystalClear (Rigaku/MSC, 2005 ▶); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S160053681102397X/cv5108sup1.cif

Structure factors: contains datablock(s) I. DOI: 10.1107/S160053681102397X/cv5108Isup2.hkl

Supplementary material file. DOI: 10.1107/S160053681102397X/cv5108Isup3.cml

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

C30H38O4Si2	Z = 2
Mr = 518.78	F(000) = 556
Triclinic, P1	Dx = 1.184 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 11.534 (2) Å	Cell parameters from 4247 reflections
b = 12.389 (3) Å	θ = 1.9–27.9°
c = 12.853 (3) Å	µ = 0.15 mm−1
α = 63.40 (3)°	T = 113 K
β = 67.63 (3)°	Block, colourless
γ = 65.99 (3)°	0.20 × 0.18 × 0.12 mm
V = 1455.1 (5) Å3

Rigaku Saturn CCD area-detector diffractometer	6772 independent reflections
Radiation source: rotating anode	3380 reflections with I > 2σ(I)
multilayer	Rint = 0.047
Detector resolution: 7.31 pixels mm-1	θmax = 27.9°, θmin = 1.9°
ω and φ scans	h = −15→12
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005)	k = −15→16
Tmin = 0.970, Tmax = 0.982	l = −16→13
12066 measured reflections

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)] = 0.046	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.127	H-atom parameters constrained
S = 0.95	w = 1/[σ2(Fo2) + (0.0512P)2] where P = (Fo2 + 2Fc2)/3
6772 reflections	(Δ/σ)max = 0.001
338 parameters	Δρmax = 0.31 e Å−3
4 restraints	Δρmin = −0.38 e Å−3

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.

	x	y	z	Uiso*/Ueq	Occ. (<1)
Si1	0.73346 (5)	0.73464 (5)	1.08693 (5)	0.02948 (16)
Si2	0.27477 (5)	0.80890 (5)	0.83890 (5)	0.02739 (15)
O1	0.77590 (13)	0.91083 (15)	0.81335 (14)	0.0447 (4)
O2	0.81690 (12)	0.76114 (14)	0.74003 (13)	0.0418 (4)
O3	0.59560 (14)	0.92819 (15)	0.63566 (13)	0.0451 (4)
O4	0.56124 (12)	0.74465 (14)	0.67925 (11)	0.0349 (4)
C1	0.59901 (16)	0.76175 (17)	1.01700 (17)	0.0245 (4)
C2	0.47780 (16)	0.73924 (17)	1.08678 (16)	0.0232 (4)
C3	0.38661 (16)	0.74403 (17)	1.03477 (16)	0.0216 (4)
C4	0.40993 (16)	0.77728 (17)	0.91040 (16)	0.0231 (4)
C5	0.53145 (17)	0.79973 (18)	0.84046 (16)	0.0247 (4)
C6	0.62236 (16)	0.79331 (17)	0.89246 (17)	0.0252 (4)
C7	0.74488 (18)	0.8302 (2)	0.81181 (18)	0.0312 (5)
C8	0.9196 (6)	0.8173 (6)	0.6438 (7)	0.0543 (17)	0.568 (5)
H8A	0.9635	0.8450	0.6763	0.065*	0.568 (5)
H8B	0.8814	0.8906	0.5795	0.065*	0.568 (5)
C9	1.0145 (4)	0.7134 (5)	0.5967 (4)	0.0716 (19)	0.568 (5)
H9A	1.0914	0.7403	0.5398	0.107*	0.568 (5)
H9B	0.9722	0.6946	0.5560	0.107*	0.568 (5)
H9C	1.0417	0.6378	0.6635	0.107*	0.568 (5)
C8'	0.9492 (8)	0.7716 (10)	0.6688 (10)	0.0543 (17)	0.432 (5)
H8'A	1.0016	0.6964	0.6453	0.065*	0.432 (5)
H8'B	0.9947	0.7790	0.7159	0.065*	0.432 (5)
C9'	0.9316 (6)	0.8881 (7)	0.5594 (6)	0.090 (3)	0.432 (5)
H9'A	1.0171	0.9018	0.5115	0.136*	0.432 (5)
H9'B	0.8752	0.9609	0.5841	0.136*	0.432 (5)
H9'C	0.8912	0.8774	0.5113	0.136*	0.432 (5)
C10	0.89613 (18)	0.6606 (2)	1.0013 (2)	0.0452 (6)
H10A	0.9650	0.6464	1.0368	0.068*
H10B	0.9123	0.7168	0.9175	0.068*
H10C	0.8962	0.5799	1.0047	0.068*
C11	0.7302 (2)	0.8833 (2)	1.0921 (2)	0.0440 (6)
H11A	0.7997	0.8663	1.1282	0.066*
H11B	0.6452	0.9175	1.1403	0.066*
H11C	0.7441	0.9446	1.0105	0.066*
C12	0.72081 (19)	0.6150 (2)	1.24164 (19)	0.0405 (6)
H12A	0.7912	0.6043	1.2734	0.061*
H12B	0.7286	0.5344	1.2391	0.061*
H12C	0.6360	0.6435	1.2936	0.061*
C13	0.43822 (16)	0.71655 (18)	1.21850 (16)	0.0248 (4)
C14	0.41489 (17)	0.8136 (2)	1.25575 (18)	0.0318 (5)
H14A	0.4273	0.8919	1.1977	0.038*
C15	0.3737 (2)	0.7989 (2)	1.3765 (2)	0.0438 (6)
H15A	0.3586	0.8665	1.4008	0.053*
C16	0.3547 (2)	0.6856 (2)	1.4612 (2)	0.0464 (6)
H16A	0.3266	0.6748	1.5441	0.056*
C17	0.37663 (19)	0.5881 (2)	1.42545 (19)	0.0414 (6)
H17A	0.3634	0.5102	1.4839	0.050*
C18	0.41791 (17)	0.60276 (19)	1.30465 (17)	0.0302 (5)
H18A	0.4323	0.5352	1.2807	0.036*
C19	0.26591 (16)	0.70700 (19)	1.11783 (16)	0.0242 (4)
C20	0.16765 (17)	0.7812 (2)	1.18300 (17)	0.0322 (5)
H20A	0.1745	0.8595	1.1726	0.039*
C21	0.05982 (19)	0.7405 (2)	1.26302 (19)	0.0436 (6)
H21A	−0.0072	0.7912	1.3070	0.052*
C22	0.0498 (2)	0.6273 (3)	1.2788 (2)	0.0483 (7)
H22A	−0.0237	0.5996	1.3342	0.058*
C23	0.1457 (2)	0.5537 (2)	1.21452 (19)	0.0434 (6)
H23A	0.1383	0.4756	1.2250	0.052*
C24	0.25341 (18)	0.5944 (2)	1.13433 (18)	0.0324 (5)
H24A	0.3196	0.5434	1.0901	0.039*
C25	0.10646 (17)	0.8685 (2)	0.92639 (18)	0.0355 (5)
H25A	0.0419	0.8829	0.8859	0.053*
H25B	0.0982	0.9477	0.9320	0.053*
H25C	0.0910	0.8060	1.0072	0.053*
C26	0.2847 (2)	0.6650 (2)	0.8199 (2)	0.0428 (6)
H26A	0.2147	0.6837	0.7835	0.064*
H26B	0.2747	0.5979	0.8984	0.064*
H26C	0.3697	0.6375	0.7677	0.064*
C27	0.28319 (19)	0.9412 (2)	0.69133 (18)	0.0433 (6)
H27A	0.2133	0.9556	0.6570	0.065*
H27B	0.3683	0.9194	0.6365	0.065*
H27C	0.2725	1.0179	0.7032	0.065*
C28	0.56678 (17)	0.8339 (2)	0.70744 (18)	0.0308 (5)
C29	0.5882 (2)	0.7649 (2)	0.55243 (18)	0.0455 (6)
H29A	0.5612	0.8563	0.5071	0.055*
H29B	0.5362	0.7248	0.5424	0.055*
C30	0.7289 (2)	0.7116 (2)	0.5031 (2)	0.0568 (7)
H30A	0.7442	0.7265	0.4180	0.085*
H30B	0.7554	0.6207	0.5469	0.085*
H30C	0.7804	0.7521	0.5118	0.085*

	U11	U22	U33	U12	U13	U23
Si1	0.0278 (3)	0.0246 (3)	0.0402 (3)	−0.0068 (2)	−0.0132 (2)	−0.0112 (3)
Si2	0.0273 (3)	0.0293 (4)	0.0268 (3)	−0.0070 (2)	−0.0075 (2)	−0.0109 (2)
O1	0.0424 (8)	0.0370 (10)	0.0554 (10)	−0.0222 (7)	−0.0068 (7)	−0.0114 (8)
O2	0.0315 (8)	0.0469 (11)	0.0420 (9)	−0.0185 (7)	0.0080 (7)	−0.0186 (8)
O3	0.0552 (9)	0.0424 (10)	0.0303 (8)	−0.0258 (8)	−0.0077 (7)	0.0019 (7)
O4	0.0415 (8)	0.0350 (9)	0.0242 (7)	−0.0102 (7)	−0.0028 (6)	−0.0119 (7)
C1	0.0256 (10)	0.0159 (10)	0.0307 (11)	−0.0042 (8)	−0.0075 (8)	−0.0080 (8)
C2	0.0259 (10)	0.0177 (10)	0.0243 (10)	−0.0036 (8)	−0.0071 (8)	−0.0073 (8)
C3	0.0211 (9)	0.0173 (11)	0.0250 (10)	−0.0045 (8)	−0.0045 (8)	−0.0080 (8)
C4	0.0229 (9)	0.0189 (11)	0.0252 (10)	−0.0044 (8)	−0.0047 (8)	−0.0082 (8)
C5	0.0270 (10)	0.0194 (11)	0.0232 (10)	−0.0051 (8)	−0.0043 (8)	−0.0065 (8)
C6	0.0231 (10)	0.0189 (11)	0.0291 (11)	−0.0058 (8)	−0.0049 (8)	−0.0059 (8)
C7	0.0288 (11)	0.0266 (13)	0.0319 (12)	−0.0082 (9)	−0.0069 (9)	−0.0050 (10)
C8	0.036 (3)	0.051 (5)	0.051 (4)	−0.022 (3)	0.015 (3)	−0.009 (4)
C9	0.042 (3)	0.092 (5)	0.062 (3)	−0.024 (3)	0.011 (2)	−0.027 (3)
C8'	0.036 (3)	0.051 (5)	0.051 (4)	−0.022 (3)	0.015 (3)	−0.009 (4)
C9'	0.061 (4)	0.126 (8)	0.049 (4)	−0.049 (5)	0.008 (4)	0.002 (5)
C10	0.0333 (12)	0.0412 (15)	0.0637 (16)	−0.0005 (10)	−0.0194 (11)	−0.0232 (13)
C11	0.0426 (13)	0.0364 (14)	0.0635 (16)	−0.0133 (11)	−0.0155 (11)	−0.0221 (12)
C12	0.0398 (12)	0.0375 (14)	0.0481 (14)	−0.0075 (10)	−0.0256 (10)	−0.0089 (11)
C13	0.0217 (10)	0.0253 (12)	0.0266 (10)	−0.0042 (8)	−0.0082 (8)	−0.0087 (9)
C14	0.0323 (11)	0.0293 (13)	0.0334 (12)	−0.0057 (9)	−0.0107 (9)	−0.0111 (10)
C15	0.0460 (13)	0.0479 (16)	0.0445 (14)	−0.0051 (11)	−0.0153 (11)	−0.0259 (12)
C16	0.0520 (14)	0.0612 (19)	0.0263 (12)	−0.0136 (13)	−0.0138 (10)	−0.0144 (12)
C17	0.0440 (13)	0.0455 (16)	0.0294 (12)	−0.0165 (11)	−0.0144 (10)	−0.0007 (11)
C18	0.0329 (11)	0.0289 (12)	0.0291 (11)	−0.0093 (9)	−0.0126 (9)	−0.0056 (9)
C19	0.0216 (9)	0.0282 (12)	0.0211 (10)	−0.0071 (8)	−0.0057 (8)	−0.0066 (8)
C20	0.0283 (11)	0.0378 (14)	0.0294 (11)	−0.0090 (9)	−0.0053 (9)	−0.0125 (10)
C21	0.0281 (12)	0.0634 (19)	0.0317 (12)	−0.0086 (11)	0.0003 (9)	−0.0202 (12)
C22	0.0343 (13)	0.0666 (19)	0.0389 (14)	−0.0277 (13)	−0.0005 (10)	−0.0091 (13)
C23	0.0456 (13)	0.0450 (16)	0.0432 (14)	−0.0268 (12)	−0.0116 (11)	−0.0053 (12)
C24	0.0330 (11)	0.0337 (13)	0.0297 (11)	−0.0127 (9)	−0.0076 (9)	−0.0076 (10)
C25	0.0295 (11)	0.0367 (14)	0.0400 (12)	−0.0044 (9)	−0.0123 (9)	−0.0144 (10)
C26	0.0477 (13)	0.0431 (15)	0.0496 (14)	−0.0125 (11)	−0.0132 (11)	−0.0252 (12)
C27	0.0389 (12)	0.0437 (15)	0.0352 (12)	−0.0032 (10)	−0.0155 (10)	−0.0059 (11)
C28	0.0236 (10)	0.0311 (13)	0.0291 (11)	−0.0073 (9)	−0.0053 (8)	−0.0048 (10)
C29	0.0528 (14)	0.0563 (17)	0.0248 (11)	−0.0159 (12)	−0.0067 (10)	−0.0138 (11)
C30	0.0553 (15)	0.070 (2)	0.0390 (14)	−0.0144 (13)	0.0011 (12)	−0.0271 (14)

Si1—C11	1.858 (2)	C11—H11C	0.9800
Si1—C12	1.868 (2)	C12—H12A	0.9800
Si1—C10	1.872 (2)	C12—H12B	0.9800
Si1—C1	1.9214 (19)	C12—H12C	0.9800
Si2—C26	1.859 (2)	C13—C14	1.379 (3)
Si2—C25	1.869 (2)	C13—C18	1.394 (3)
Si2—C27	1.871 (2)	C14—C15	1.387 (3)
Si2—C4	1.9233 (19)	C14—H14A	0.9500
O1—C7	1.200 (2)	C15—C16	1.380 (3)
O2—C7	1.348 (2)	C15—H15A	0.9500
O2—C8'	1.475 (8)	C16—C17	1.376 (3)
O2—C8	1.483 (6)	C16—H16A	0.9500
O3—C28	1.202 (2)	C17—C18	1.387 (3)
O4—C28	1.338 (2)	C17—H17A	0.9500
O4—C29	1.459 (2)	C18—H18A	0.9500
C1—C2	1.406 (2)	C19—C24	1.374 (3)
C1—C6	1.409 (3)	C19—C20	1.397 (3)
C2—C3	1.416 (2)	C20—C21	1.390 (3)
C2—C13	1.498 (2)	C20—H20A	0.9500
C3—C4	1.404 (2)	C21—C22	1.372 (3)
C3—C19	1.496 (2)	C21—H21A	0.9500
C4—C5	1.409 (2)	C22—C23	1.377 (3)
C5—C6	1.404 (3)	C22—H22A	0.9500
C5—C28	1.493 (3)	C23—C24	1.389 (3)
C6—C7	1.505 (3)	C23—H23A	0.9500
C8—C9	1.506 (8)	C24—H24A	0.9500
C8—H8A	0.9900	C25—H25A	0.9800
C8—H8B	0.9900	C25—H25B	0.9800
C9—H9A	0.9800	C25—H25C	0.9800
C9—H9B	0.9800	C26—H26A	0.9800
C9—H9C	0.9800	C26—H26B	0.9800
C8'—C9'	1.504 (8)	C26—H26C	0.9800
C8'—H8'A	0.9900	C27—H27A	0.9800
C8'—H8'B	0.9900	C27—H27B	0.9800
C9'—H9'A	0.9800	C27—H27C	0.9800
C9'—H9'B	0.9800	C29—C30	1.481 (3)
C9'—H9'C	0.9800	C29—H29A	0.9900
C10—H10A	0.9800	C29—H29B	0.9900
C10—H10B	0.9800	C30—H30A	0.9800
C10—H10C	0.9800	C30—H30B	0.9800
C11—H11A	0.9800	C30—H30C	0.9800
C11—H11B	0.9800
C11—Si1—C12	108.75 (11)	Si1—C12—H12B	109.5
C11—Si1—C10	111.67 (10)	H12A—C12—H12B	109.5
C12—Si1—C10	102.99 (11)	Si1—C12—H12C	109.5
C11—Si1—C1	111.51 (9)	H12A—C12—H12C	109.5
C12—Si1—C1	112.47 (9)	H12B—C12—H12C	109.5
C10—Si1—C1	109.18 (9)	C14—C13—C18	118.75 (19)
C26—Si2—C25	108.78 (10)	C14—C13—C2	118.88 (18)
C26—Si2—C27	110.16 (11)	C18—C13—C2	122.30 (19)
C25—Si2—C27	102.15 (10)	C13—C14—C15	121.2 (2)
C26—Si2—C4	111.22 (9)	C13—C14—H14A	119.4
C25—Si2—C4	113.09 (8)	C15—C14—H14A	119.4
C27—Si2—C4	111.07 (10)	C16—C15—C14	119.6 (2)
C7—O2—C8'	119.7 (7)	C16—C15—H15A	120.2
C7—O2—C8	111.5 (4)	C14—C15—H15A	120.2
C8'—O2—C8	21.5 (4)	C17—C16—C15	119.9 (2)
C28—O4—C29	117.80 (17)	C17—C16—H16A	120.1
C2—C1—C6	116.18 (16)	C15—C16—H16A	120.1
C2—C1—Si1	122.45 (14)	C16—C17—C18	120.5 (2)
C6—C1—Si1	121.06 (13)	C16—C17—H17A	119.8
C1—C2—C3	121.63 (16)	C18—C17—H17A	119.8
C1—C2—C13	120.41 (15)	C17—C18—C13	120.1 (2)
C3—C2—C13	117.86 (15)	C17—C18—H18A	120.0
C4—C3—C2	121.75 (16)	C13—C18—H18A	120.0
C4—C3—C19	120.70 (15)	C24—C19—C20	118.84 (18)
C2—C3—C19	117.50 (15)	C24—C19—C3	119.20 (17)
C3—C4—C5	116.57 (15)	C20—C19—C3	121.90 (18)
C3—C4—Si2	121.16 (13)	C21—C20—C19	119.9 (2)
C5—C4—Si2	121.90 (13)	C21—C20—H20A	120.0
C6—C5—C4	121.50 (16)	C19—C20—H20A	120.0
C6—C5—C28	117.65 (16)	C22—C21—C20	120.3 (2)
C4—C5—C28	120.84 (16)	C22—C21—H21A	119.9
C5—C6—C1	122.30 (16)	C20—C21—H21A	119.9
C5—C6—C7	118.89 (16)	C21—C22—C23	120.3 (2)
C1—C6—C7	118.67 (16)	C21—C22—H22A	119.9
O1—C7—O2	123.88 (18)	C23—C22—H22A	119.9
O1—C7—C6	123.30 (19)	C22—C23—C24	119.5 (2)
O2—C7—C6	112.80 (18)	C22—C23—H23A	120.3
O2—C8—C9	105.0 (5)	C24—C23—H23A	120.3
O2—C8—H8A	110.8	C19—C24—C23	121.2 (2)
C9—C8—H8A	110.8	C19—C24—H24A	119.4
O2—C8—H8B	110.8	C23—C24—H24A	119.4
C9—C8—H8B	110.8	Si2—C25—H25A	109.5
H8A—C8—H8B	108.8	Si2—C25—H25B	109.5
C8—C9—H9A	109.5	H25A—C25—H25B	109.5
C8—C9—H9B	109.5	Si2—C25—H25C	109.5
H9A—C9—H9B	109.5	H25A—C25—H25C	109.5
C8—C9—H9C	109.5	H25B—C25—H25C	109.5
H9A—C9—H9C	109.5	Si2—C26—H26A	109.5
H9B—C9—H9C	109.5	Si2—C26—H26B	109.5
O2—C8'—C9'	106.5 (6)	H26A—C26—H26B	109.5
O2—C8'—H8'A	110.4	Si2—C26—H26C	109.5
C9'—C8'—H8'A	110.4	H26A—C26—H26C	109.5
O2—C8'—H8'B	110.4	H26B—C26—H26C	109.5
C9'—C8'—H8'B	110.4	Si2—C27—H27A	109.5
H8'A—C8'—H8'B	108.6	Si2—C27—H27B	109.5
C8'—C9'—H9'A	109.5	H27A—C27—H27B	109.5
C8'—C9'—H9'B	109.5	Si2—C27—H27C	109.5
H9'A—C9'—H9'B	109.5	H27A—C27—H27C	109.5
C8'—C9'—H9'C	109.5	H27B—C27—H27C	109.5
H9'A—C9'—H9'C	109.5	O3—C28—O4	124.7 (2)
H9'B—C9'—H9'C	109.5	O3—C28—C5	125.0 (2)
Si1—C10—H10A	109.5	O4—C28—C5	110.34 (17)
Si1—C10—H10B	109.5	O4—C29—C30	111.25 (17)
H10A—C10—H10B	109.5	O4—C29—H29A	109.4
Si1—C10—H10C	109.5	C30—C29—H29A	109.4
H10A—C10—H10C	109.5	O4—C29—H29B	109.4
H10B—C10—H10C	109.5	C30—C29—H29B	109.4
Si1—C11—H11A	109.5	H29A—C29—H29B	108.0
Si1—C11—H11B	109.5	C29—C30—H30A	109.5
H11A—C11—H11B	109.5	C29—C30—H30B	109.5
Si1—C11—H11C	109.5	H30A—C30—H30B	109.5
H11A—C11—H11C	109.5	C29—C30—H30C	109.5
H11B—C11—H11C	109.5	H30A—C30—H30C	109.5
Si1—C12—H12A	109.5	H30B—C30—H30C	109.5
C11—Si1—C1—C2	−96.97 (18)	C5—C6—C7—O1	123.1 (2)
C12—Si1—C1—C2	25.50 (19)	C1—C6—C7—O1	−52.7 (3)
C10—Si1—C1—C2	139.16 (16)	C5—C6—C7—O2	−58.3 (2)
C11—Si1—C1—C6	89.57 (18)	C1—C6—C7—O2	125.97 (19)
C12—Si1—C1—C6	−147.96 (16)	C7—O2—C8—C9	163.3 (4)
C10—Si1—C1—C6	−34.30 (19)	C8'—O2—C8—C9	46 (2)
C6—C1—C2—C3	2.0 (3)	C7—O2—C8'—C9'	−81.0 (11)
Si1—C1—C2—C3	−171.72 (14)	C8—O2—C8'—C9'	−8(2)
C6—C1—C2—C13	−174.44 (17)	C1—C2—C13—C14	66.6 (2)
Si1—C1—C2—C13	11.8 (2)	C3—C2—C13—C14	−110.0 (2)
C1—C2—C3—C4	−3.1 (3)	C1—C2—C13—C18	−116.6 (2)
C13—C2—C3—C4	173.50 (17)	C3—C2—C13—C18	66.8 (2)
C1—C2—C3—C19	174.46 (17)	C18—C13—C14—C15	0.9 (3)
C13—C2—C3—C19	−9.0 (2)	C2—C13—C14—C15	177.77 (16)
C2—C3—C4—C5	3.0 (3)	C13—C14—C15—C16	−0.4 (3)
C19—C3—C4—C5	−174.47 (16)	C14—C15—C16—C17	−0.1 (3)
C2—C3—C4—Si2	−170.20 (14)	C15—C16—C17—C18	0.1 (3)
C19—C3—C4—Si2	12.4 (2)	C16—C17—C18—C13	0.4 (3)
C26—Si2—C4—C3	−94.38 (17)	C14—C13—C18—C17	−0.8 (3)
C25—Si2—C4—C3	28.36 (19)	C2—C13—C18—C17	−177.62 (15)
C27—Si2—C4—C3	142.54 (16)	C4—C3—C19—C24	69.9 (2)
C26—Si2—C4—C5	92.81 (18)	C2—C3—C19—C24	−107.7 (2)
C25—Si2—C4—C5	−144.45 (16)	C4—C3—C19—C20	−112.8 (2)
C27—Si2—C4—C5	−30.27 (18)	C2—C3—C19—C20	69.7 (2)
C3—C4—C5—C6	−2.1 (3)	C24—C19—C20—C21	0.1 (3)
Si2—C4—C5—C6	171.00 (14)	C3—C19—C20—C21	−177.23 (16)
C3—C4—C5—C28	179.11 (17)	C19—C20—C21—C22	0.3 (3)
Si2—C4—C5—C28	−7.8 (3)	C20—C21—C22—C23	−0.7 (3)
C4—C5—C6—C1	1.3 (3)	C21—C22—C23—C24	0.6 (3)
C28—C5—C6—C1	−179.87 (18)	C20—C19—C24—C23	−0.3 (3)
C4—C5—C6—C7	−174.30 (17)	C3—C19—C24—C23	177.18 (17)
C28—C5—C6—C7	4.5 (3)	C22—C23—C24—C19	−0.1 (3)
C2—C1—C6—C5	−1.2 (3)	C29—O4—C28—O3	−2.0 (3)
Si1—C1—C6—C5	172.65 (14)	C29—O4—C28—C5	177.76 (14)
C2—C1—C6—C7	174.43 (17)	C6—C5—C28—O3	−56.6 (3)
Si1—C1—C6—C7	−11.7 (2)	C4—C5—C28—O3	122.3 (2)
C8'—O2—C7—O1	7.8 (5)	C6—C5—C28—O4	123.73 (18)
C8—O2—C7—O1	−14.2 (4)	C4—C5—C28—O4	−57.5 (2)
C8'—O2—C7—C6	−170.8 (4)	C28—O4—C29—C30	90.7 (2)
C8—O2—C7—C6	167.2 (4)

D—H···A	D—H	H···A	D···A	D—H···A
C10—H10B···O1	0.98	2.39	3.116 (3)	131
C27—H27B···O4	0.98	2.43	3.137 (3)	129

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C10—H10B⋯O1	0.98	2.39	3.116 (3)	131
C27—H27B⋯O4	0.98	2.43	3.137 (3)	129