#------------------------------------------------------------------------------
#$Date: 2016-03-21 06:41:29 +0200 (Mon, 21 Mar 2016) $
#$Revision: 178529 $
#$URL: svn://www.crystallography.net/cod/cif/4/06/34/4063496.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4063496
loop_
_publ_author_name
'Chen, Jingjin'
'Liu, Yuanhong'
_publ_section_title
;
 Highly Stereoselective Synthesis of Trisubstituted cis-[3]Cumulenols from
 Alkynylated Oxatitanacycles in the Presence of Lewis acids
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              505
_journal_page_last               508
_journal_paper_doi               10.1021/om900941y
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C29 H42 O Si2'
_chemical_formula_weight         462.81
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                93.710(4)
_cell_angle_beta                 107.894(4)
_cell_angle_gamma                116.474(4)
_cell_formula_units_Z            2
_cell_length_a                   11.753(3)
_cell_length_b                   11.987(3)
_cell_length_c                   12.419(3)
_cell_measurement_reflns_used    2392
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      47.475
_cell_measurement_theta_min      4.614
_cell_volume                     1448.0(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0448
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8604
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.140
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.80717
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.061
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.465
_exptl_crystal_size_mid          0.398
_exptl_crystal_size_min          0.334
_refine_diff_density_max         0.832
_refine_diff_density_min         -0.279
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         6136
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.1021
_refine_ls_R_factor_gt           0.0705
_refine_ls_shift/su_max          0.070
_refine_ls_shift/su_mean         0.010
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.1324P)²+0.0000P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1994
_refine_ls_wR_factor_ref         0.2216
_reflns_number_gt                3798
_reflns_number_total             6136
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900941y_si_003.cif
_cod_data_source_block           cd28396
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1673 2011-04-08 12:14:43Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4063496
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
Si1 Si 0.86663(8) 0.32338(7) 0.15154(7) 0.0604(3) Uani 1 1 d . . .
Si2 Si 1.23197(12) 0.22079(11) 0.48857(9) 0.0529(3) Uani 0.70 1 d P A 1
Si2' Si 1.2899(4) 0.2315(3) 0.4522(3) 0.0878(10) Uani 0.30 1 d P A 2
O1 O 0.62273(18) 0.06639(18) -0.02524(17) 0.0658(5) Uani 1 1 d . . .
H1 H 0.5673 -0.0023 -0.0187 0.099 Uiso 1 1 calc R . .
C1 C 0.8514(3) 0.1604(2) 0.1110(2) 0.0504(6) Uani 1 1 d . . .
C2 C 0.9381(3) 0.1347(2) 0.1861(2) 0.0520(6) Uani 1 1 d . . .
C3 C 1.0247(3) 0.1184(2) 0.2623(2) 0.0557(6) Uani 1 1 d . A .
C4 C 1.1151(3) 0.1023(3) 0.3424(3) 0.0682(8) Uani 1 1 d . . .
C5 C 0.7503(2) 0.0671(2) -0.0072(2) 0.0505(6) Uani 1 1 d . . .
C6 C 0.7237(3) -0.0709(2) -0.0126(2) 0.0554(6) Uani 1 1 d . . .
C7 C 0.6655(3) -0.1389(3) 0.0596(3) 0.0742(8) Uani 1 1 d . . .
H7 H 0.6505 -0.0981 0.1157 0.089 Uiso 1 1 calc R . .
C8 C 0.6296(4) -0.2659(3) 0.0495(3) 0.0890(10) Uani 1 1 d . . .
H8 H 0.5906 -0.3101 0.0989 0.107 Uiso 1 1 calc R . .
C9 C 0.6504(4) -0.3282(3) -0.0321(3) 0.0923(11) Uani 1 1 d . . .
H9 H 0.6252 -0.4145 -0.0389 0.111 Uiso 1 1 calc R . .
C10 C 0.7081(4) -0.2632(3) -0.1027(3) 0.0889(10) Uani 1 1 d . . .
H10 H 0.7229 -0.3051 -0.1582 0.107 Uiso 1 1 calc R . .
C11 C 0.7455(3) -0.1348(3) -0.0937(3) 0.0716(8) Uani 1 1 d . . .
H11 H 0.7857 -0.0914 -0.1428 0.086 Uiso 1 1 calc R . .
C12 C 0.8011(3) 0.1209(2) -0.1013(2) 0.0539(6) Uani 1 1 d . . .
C13 C 0.9376(3) 0.1709(3) -0.0858(3) 0.0693(8) Uani 1 1 d . . .
H13 H 0.9992 0.1733 -0.0163 0.083 Uiso 1 1 calc R . .
C14 C 0.9848(4) 0.2178(3) -0.1723(3) 0.0841(10) Uani 1 1 d . . .
H14 H 1.0768 0.2497 -0.1607 0.101 Uiso 1 1 calc R . .
C15 C 0.8970(5) 0.2170(3) -0.2727(3) 0.0854(10) Uani 1 1 d . . .
H15 H 0.9283 0.2495 -0.3301 0.102 Uiso 1 1 calc R . .
C16 C 0.7618(5) 0.1680(4) -0.2895(3) 0.0893(11) Uani 1 1 d . . .
H16 H 0.7013 0.1670 -0.3590 0.107 Uiso 1 1 calc R . .
C17 C 0.7128(3) 0.1197(3) -0.2050(2) 0.0715(8) Uani 1 1 d . . .
H17 H 0.6202 0.0863 -0.2183 0.086 Uiso 1 1 calc R . .
C18 C 1.0526(3) 0.4436(3) 0.2035(4) 0.0948(11) Uani 1 1 d . . .
H18A H 1.0858 0.4398 0.1425 0.142 Uiso 1 1 calc R . .
H18B H 1.1026 0.4250 0.2701 0.142 Uiso 1 1 calc R . .
H18C H 1.0651 0.5279 0.2246 0.142 Uiso 1 1 calc R . .
C19 C 0.7734(4) 0.3656(3) 0.0255(3) 0.0876(10) Uani 1 1 d . . .
H19A H 0.7956 0.4533 0.0471 0.131 Uiso 1 1 calc R . .
H19B H 0.6764 0.3107 0.0027 0.131 Uiso 1 1 calc R . .
H19C H 0.8000 0.3546 -0.0384 0.131 Uiso 1 1 calc R . .
C20 C 0.7975(3) 0.3236(3) 0.2712(2) 0.0689(8) Uani 1 1 d . . .
C21 C 0.6518(3) 0.2139(3) 0.2338(3) 0.0861(10) Uani 1 1 d . . .
H21A H 0.6166 0.2185 0.2932 0.129 Uiso 1 1 calc R . .
H21B H 0.6513 0.1337 0.2220 0.129 Uiso 1 1 calc R . .
H21C H 0.5953 0.2200 0.1624 0.129 Uiso 1 1 calc R . .
C22 C 0.7974(5) 0.4504(4) 0.2977(4) 0.1137(14) Uani 1 1 d . . .
H22A H 0.7372 0.4578 0.2297 0.170 Uiso 1 1 calc R . .
H22B H 0.8887 0.5208 0.3195 0.170 Uiso 1 1 calc R . .
H22C H 0.7664 0.4519 0.3605 0.170 Uiso 1 1 calc R . .
C23 C 0.8832(4) 0.3078(4) 0.3830(3) 0.1009(12) Uani 1 1 d . . .
H23A H 0.8458 0.3091 0.4415 0.151 Uiso 1 1 calc R . .
H23B H 0.9760 0.3768 0.4099 0.151 Uiso 1 1 calc R . .
H23C H 0.8818 0.2275 0.3681 0.151 Uiso 1 1 calc R . .
C24 C 1.2960(4) 0.3862(3) 0.4604(3) 0.0899(10) Uani 1 1 d . . .
C25 C 1.1476(4) 0.2023(4) 0.5930(3) 0.1152(14) Uani 1 1 d . . .
H25A H 1.2064 0.2719 0.6609 0.143 Uiso 1 1 calc R A 1
H25B H 1.1293 0.1225 0.6148 0.143 Uiso 1 1 calc R A 1
H25C H 1.0629 0.2029 0.5580 0.143 Uiso 1 1 calc R A 1
C26 C 1.4498(4) 0.2051(5) 0.4525(3) 0.1207(15) Uani 1 1 d . . .
C28 C 1.3253(5) 0.0582(4) 0.5767(4) 0.1253(17) Uani 1 1 d . . .
H28A H 1.2509 -0.0048 0.5088 0.148 Uiso 1 1 calc R C 1
H28B H 1.2933 0.0600 0.6389 0.148 Uiso 1 1 calc R C 1
H28C H 1.3974 0.0367 0.5999 0.148 Uiso 1 1 calc R C 1
C27 C 1.3804(4) 0.1908(4) 0.5486(3) 0.0968(11) Uani 1 1 d . A 1
C29 C 1.4842(5) 0.2928(4) 0.6631(3) 0.1257(16) Uani 1 1 d . A 1
H29A H 1.4401 0.2874 0.7177 0.149 Uiso 1 1 calc R A 1
H29B H 1.5168 0.3767 0.6476 0.149 Uiso 1 1 calc R A 1
H29C H 1.5601 0.2778 0.6953 0.149 Uiso 1 1 calc R A 1
H4 H 1.109(3) 0.021(3) 0.329(3) 0.080(9) Uiso 1 1 d . . .
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Si Si 0.0817 0.0704 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
C19 Si1 C18 108.03(17) . . ?
C19 Si1 C1 112.60(13) . . ?
C18 Si1 C1 106.59(14) . . ?
C19 Si1 C20 109.68(15) . . ?
C18 Si1 C20 110.99(16) . . ?
C1 Si1 C20 108.92(11) . . ?
C25 Si2 C27 108.6(2) . . ?
C25 Si2 C24 111.58(19) . . ?
C27 Si2 C24 109.36(18) . . ?
C25 Si2 C4 112.99(18) . . ?
C27 Si2 C4 107.02(16) . . ?
C24 Si2 C4 107.12(15) . . ?
C5 O1 H1 109.5 . . ?
C2 C1 C5 121.4(2) . . ?
C2 C1 Si1 116.86(18) . . ?
C5 C1 Si1 121.59(18) . . ?
C3 C2 C1 175.7(2) . . ?
C2 C3 C4 179.5(3) . . ?
C3 C4 Si2 123.1(2) . . ?
C3 C4 Si2' 127.7(3) . . ?
Si2 C4 Si2' 27.23(13) . . ?
C3 C4 H4 115.8(19) . . ?
Si2 C4 H4 120.2(19) . . ?
Si2' C4 H4 113.1(19) . . ?
O1 C5 C12 108.4(2) . . ?
O1 C5 C1 105.57(18) . . ?
C12 C5 C1 108.58(19) . . ?
O1 C5 C6 108.02(19) . . ?
C12 C5 C6 111.82(19) . . ?
C1 C5 C6 114.1(2) . . ?
C11 C6 C7 117.6(3) . . ?
C11 C6 C5 122.4(2) . . ?
C7 C6 C5 119.7(2) . . ?
C8 C7 C6 120.9(3) . . ?
C8 C7 H7 119.6 . . ?
C6 C7 H7 119.6 . . ?
C9 C8 C7 120.8(3) . . ?
C9 C8 H8 119.6 . . ?
C7 C8 H8 119.6 . . ?
C10 C9 C8 119.3(3) . . ?
C10 C9 H9 120.4 . . ?
C8 C9 H9 120.4 . . ?
C9 C10 C11 120.9(3) . . ?
C9 C10 H10 119.6 . . ?
C11 C10 H10 119.6 . . ?
C6 C11 C10 120.6(3) . . ?
C6 C11 H11 119.7 . . ?
C10 C11 H11 119.7 . . ?
C17 C12 C13 117.8(3) . . ?
C17 C12 C5 121.4(2) . . ?
C13 C12 C5 120.8(2) . . ?
C12 C13 C14 121.3(3) . . ?
C12 C13 H13 119.3 . . ?
C14 C13 H13 119.3 . . ?
C15 C14 C13 120.0(3) . . ?
C15 C14 H14 120.0 . . ?
C13 C14 H14 120.0 . . ?
C14 C15 C16 119.5(3) . . ?
C14 C15 H15 120.2 . . ?
C16 C15 H15 120.2 . . ?
C15 C16 C17 121.3(3) . . ?
C15 C16 H16 119.4 . . ?
C17 C16 H16 119.4 . . ?
C12 C17 C16 120.1(3) . . ?
C12 C17 H17 120.0 . . ?
C16 C17 H17 120.0 . . ?
Si1 C18 H18A 109.5 . . ?
Si1 C18 H18B 109.5 . . ?
H18A C18 H18B 109.5 . . ?
Si1 C18 H18C 109.5 . . ?
H18A C18 H18C 109.5 . . ?
H18B C18 H18C 109.5 . . ?
Si1 C19 H19A 109.5 . . ?
Si1 C19 H19B 109.5 . . ?
H19A C19 H19B 109.5 . . ?
Si1 C19 H19C 109.5 . . ?
H19A C19 H19C 109.5 . . ?
H19B C19 H19C 109.5 . . ?
C21 C20 C23 107.4(3) . . ?
C21 C20 C22 108.7(3) . . ?
C23 C20 C22 108.7(3) . . ?
C21 C20 Si1 110.59(18) . . ?
C23 C20 Si1 111.9(2) . . ?
C22 C20 Si1 109.6(2) . . ?
C20 C21 H21A 109.5 . . ?
C20 C21 H21B 109.5 . . ?
H21A C21 H21B 109.5 . . ?
C20 C21 H21C 109.5 . . ?
H21A C21 H21C 109.5 . . ?
H21B C21 H21C 109.5 . . ?
C20 C22 H22A 109.5 . . ?
C20 C22 H22B 109.5 . . ?
H22A C22 H22B 109.5 . . ?
C20 C22 H22C 109.5 . . ?
H22A C22 H22C 109.5 . . ?
H22B C22 H22C 109.5 . . ?
C20 C23 H23A 109.5 . . ?
C20 C23 H23B 109.5 . . ?
H23A C23 H23B 109.5 . . ?
C20 C23 H23C 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?
C28 C27 C29 108.4(3) . . ?
C28 C27 C26 114.7(3) . . ?
C29 C27 C26 110.1(4) . . ?
C28 C27 Si2 107.8(3) . . ?
C29 C27 Si2 108.7(3) . . ?
C26 C27 Si2 107.0(2) . . ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
Si1 C19 1.857(3) . ?
Si1 C18 1.864(3) . ?
Si1 C1 1.899(2) . ?
Si1 C20 1.901(3) . ?
Si2 C25 1.829(3) . ?
Si2 C27 1.876(4) . ?
Si2 C24 1.882(3) . ?
Si2 C4 1.896(3) . ?
Si2' C4 1.909(5) . ?
O1 C5 1.442(3) . ?
O1 H1 0.8200 . ?
C1 C2 1.318(4) . ?
C1 C5 1.533(3) . ?
C2 C3 1.257(4) . ?
C3 C4 1.309(4) . ?
C4 H4 0.94(3) . ?
C5 C12 1.523(3) . ?
C5 C6 1.533(4) . ?
C6 C11 1.380(4) . ?
C6 C7 1.382(4) . ?
C7 C8 1.372(4) . ?
C7 H7 0.9300 . ?
C8 C9 1.365(5) . ?
C8 H8 0.9300 . ?
C9 C10 1.349(5) . ?
C9 H9 0.9300 . ?
C10 C11 1.385(4) . ?
C10 H10 0.9300 . ?
C11 H11 0.9300 . ?
C12 C17 1.377(4) . ?
C12 C13 1.381(4) . ?
C13 C14 1.394(4) . ?
C13 H13 0.9300 . ?
C14 C15 1.349(5) . ?
C14 H14 0.9300 . ?
C15 C16 1.364(5) . ?
C15 H15 0.9300 . ?
C16 C17 1.386(4) . ?
C16 H16 0.9300 . ?
C17 H17 0.9300 . ?
C18 H18A 0.9600 . ?
C18 H18B 0.9600 . ?
C18 H18C 0.9600 . ?
C19 H19A 0.9600 . ?
C19 H19B 0.9600 . ?
C19 H19C 0.9600 . ?
C20 C21 1.517(4) . ?
C20 C23 1.524(4) . ?
C20 C22 1.534(4) . ?
C21 H21A 0.9600 . ?
C21 H21B 0.9600 . ?
C21 H21C 0.9600 . ?
C22 H22A 0.9600 . ?
C22 H22B 0.9600 . ?
C22 H22C 0.9600 . ?
C23 H23A 0.9600 . ?
C23 H23B 0.9600 . ?
C23 H23C 0.9600 . ?
C24 H24A 0.9600 . ?
C24 H24B 0.9600 . ?
C24 H24C 0.9600 . ?
C25 H25A 0.9600 . ?
C25 H25B 0.9600 . ?
C25 H25C 0.9600 . ?
C26 C27 1.619(5) . ?
C26 H26A 0.9600 . ?
C26 H26B 0.9600 . ?
C26 H26C 0.9600 . ?
C28 C27 1.537(5) . ?
C28 H28A 0.9600 . ?
C28 H28B 0.9600 . ?
C28 H28C 0.9600 . ?
C27 C29 1.544(5) . ?
C29 H29A 0.9600 . ?
C29 H29B 0.9600 . ?
C29 H29C 0.9600 . ?
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_site_symmetry_A
O1 H1 O1 0.82 2.27 2.898(4) 133.8 2_655
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
C19 Si1 C1 C2 164.8(2) . . . . ?
C18 Si1 C1 C2 46.5(2) . . . . ?
C20 Si1 C1 C2 -73.3(2) . . . . ?
C19 Si1 C1 C5 -10.8(2) . . . . ?
C18 Si1 C1 C5 -129.1(2) . . . . ?
C20 Si1 C1 C5 111.1(2) . . . . ?
C5 C1 C2 C3 174(3) . . . . ?
Si1 C1 C2 C3 -2(4) . . . . ?
C1 C2 C3 C4 21(45) . . . . ?
C2 C3 C4 Si2 -12(43) . . . . ?
C2 C3 C4 Si2' -45(43) . . . . ?
C25 Si2 C4 C3 80.6(3) . . . . ?
C27 Si2 C4 C3 -159.9(3) . . . . ?
C24 Si2 C4 C3 -42.7(3) . . . . ?
C25 Si2 C4 Si2' -170.3(3) . . . . ?
C27 Si2 C4 Si2' -50.7(3) . . . . ?
C24 Si2 C4 Si2' 66.5(3) . . . . ?
C2 C1 C5 O1 138.7(2) . . . . ?
Si1 C1 C5 O1 -45.8(2) . . . . ?
C2 C1 C5 C12 -105.2(3) . . . . ?
Si1 C1 C5 C12 70.3(2) . . . . ?
C2 C1 C5 C6 20.3(3) . . . . ?
Si1 C1 C5 C6 -164.28(17) . . . . ?
O1 C5 C6 C11 119.7(3) . . . . ?
C12 C5 C6 C11 0.5(3) . . . . ?
C1 C5 C6 C11 -123.2(3) . . . . ?
O1 C5 C6 C7 -55.0(3) . . . . ?
C12 C5 C6 C7 -174.2(2) . . . . ?
C1 C5 C6 C7 62.1(3) . . . . ?
C11 C6 C7 C8 -0.7(4) . . . . ?
C5 C6 C7 C8 174.3(3) . . . . ?
C6 C7 C8 C9 0.0(5) . . . . ?
C7 C8 C9 C10 0.5(6) . . . . ?
C8 C9 C10 C11 -0.3(6) . . . . ?
C7 C6 C11 C10 0.9(4) . . . . ?
C5 C6 C11 C10 -173.9(3) . . . . ?
C9 C10 C11 C6 -0.4(5) . . . . ?
O1 C5 C12 C17 -21.9(3) . . . . ?
C1 C5 C12 C17 -136.2(2) . . . . ?
C6 C5 C12 C17 97.1(3) . . . . ?
O1 C5 C12 C13 159.1(2) . . . . ?
C1 C5 C12 C13 44.8(3) . . . . ?
C6 C5 C12 C13 -81.9(3) . . . . ?
C17 C12 C13 C14 -0.5(4) . . . . ?
C5 C12 C13 C14 178.6(2) . . . . ?
C12 C13 C14 C15 1.2(5) . . . . ?
C13 C14 C15 C16 -1.1(5) . . . . ?
C14 C15 C16 C17 0.4(5) . . . . ?
C13 C12 C17 C16 -0.3(4) . . . . ?
C5 C12 C17 C16 -179.3(2) . . . . ?
C15 C16 C17 C12 0.3(5) . . . . ?
C19 Si1 C20 C21 68.3(3) . . . . ?
C18 Si1 C20 C21 -172.4(2) . . . . ?
C1 Si1 C20 C21 -55.4(3) . . . . ?
C19 Si1 C20 C23 -172.1(2) . . . . ?
C18 Si1 C20 C23 -52.8(3) . . . . ?
C1 Si1 C20 C23 64.2(3) . . . . ?
C19 Si1 C20 C22 -51.5(3) . . . . ?
C18 Si1 C20 C22 67.8(3) . . . . ?
C1 Si1 C20 C22 -175.1(2) . . . . ?
C25 Si2 C27 C28 55.0(3) . . . . ?
C24 Si2 C27 C28 177.0(2) . . . . ?
C4 Si2 C27 C28 -67.3(3) . . . . ?
C25 Si2 C27 C29 -62.3(3) . . . . ?
C24 Si2 C27 C29 59.7(3) . . . . ?
C4 Si2 C27 C29 175.4(3) . . . . ?
C25 Si2 C27 C26 178.8(3) . . . . ?
C24 Si2 C27 C26 -59.2(3) . . . . ?
C4 Si2 C27 C26 56.5(3) . . . . ?
