#------------------------------------------------------------------------------ #$Date: 2011-09-10 04:16:28 +0100 (Sat, 10 Sep 2011) $ #$Revision: 25271 $ #$URL: svn://www.crystallography.net/cod/cif/2/2006124.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided by IUCr Journals, http://journals.iucr.org/. # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_2006124 loop_ _publ_author_name 'Miller, J. R.' 'Lu, C.' 'Zheng, Y.' _publ_section_title ; Bis[2-(triphenylsilyl)phenyl] Disulfide ; _journal_issue 5 _journal_name_full 'Acta Crystallographica Section C' _journal_page_first 654 _journal_page_last 655 _journal_volume 53 _journal_year 1997 _chemical_formula_moiety 'C48 H38 S2 Si2' _chemical_formula_sum 'C48 H38 S2 Si2' _chemical_formula_weight 735.08 _chemical_name_systematic ; Bis[2-(triphenylsilyl)phenyl] Disulphide ; _space_group_IT_number 2 _symmetry_cell_setting triclinic _symmetry_space_group_name_Hall '-P 1' _symmetry_space_group_name_H-M 'P -1' _audit_creation_method SHELXL _cell_angle_alpha 92.54(4) _cell_angle_beta 95.08(4) _cell_angle_gamma 102.67(4) _cell_formula_units_Z 2 _cell_length_a 9.276(6) _cell_length_b 9.879(6) _cell_length_c 22.499(13) _cell_measurement_reflns_used 25 _cell_measurement_temperature 291.0(10) _cell_measurement_theta_max 21 _cell_measurement_theta_min 20 _cell_volume 1999(2) _computing_cell_refinement 'CAD-4 Software' _computing_data_collection 'CAD-4 Software (Enraf-Nonius, 1989)' _computing_data_reduction 'MolEN (Fair, 1990)' _computing_molecular_graphics 'ZORTEP (Zsolnai, 1994)' _computing_publication_material SHELXL-93 _computing_structure_refinement 'SHELXL-93 (Sheldrick, 1993)' _computing_structure_solution 'SHELXS-86 (Sheldrick, 1990)' _diffrn_ambient_temperature 291.0(10) _diffrn_measurement_device Enraf-Nonius_CAD4 _diffrn_measurement_method \w-2\q _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 0.025 _diffrn_reflns_av_sigmaI/netI 0.0342 _diffrn_reflns_limit_h_max 11 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_k_max 11 _diffrn_reflns_limit_k_min -11 _diffrn_reflns_limit_l_max 26 _diffrn_reflns_limit_l_min -26 _diffrn_reflns_number 7488 _diffrn_reflns_theta_max 25.0 _diffrn_reflns_theta_min 1.82 _diffrn_standards_decay_% 0 _diffrn_standards_interval_time 120 _diffrn_standards_number 3 _exptl_absorpt_coefficient_mu 0.226 _exptl_absorpt_correction_T_max 0.893 _exptl_absorpt_correction_T_min 0.840 _exptl_absorpt_correction_type '\y scan (Fair, 1990)' _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.221 _exptl_crystal_density_method 'Not measured' _exptl_crystal_description cube _exptl_crystal_F_000 772 _exptl_crystal_size_max 0.5 _exptl_crystal_size_mid 0.5 _exptl_crystal_size_min 0.5 _refine_diff_density_max 0.303 _refine_diff_density_min -0.314 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_all 1.010 _refine_ls_goodness_of_fit_obs 1.041 _refine_ls_hydrogen_treatment 'H atoms refined' _refine_ls_matrix_type full _refine_ls_number_parameters 621 _refine_ls_number_reflns 7009 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.010 _refine_ls_restrained_S_obs 1.041 _refine_ls_R_factor_all 0.0677 _refine_ls_R_factor_obs 0.0375 _refine_ls_shift/esd_max -0.004 _refine_ls_shift/esd_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_scheme 'calc w = 1/[\s^2^(Fo^2^)+(0.0623P)^2^+0.6217P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_wR_factor_all 0.1172 _refine_ls_wR_factor_obs 0.1018 _reflns_number_observed 5142 _reflns_number_total 7009 _reflns_observed_criterion >2sigma(I) _[local]_cod_data_source_file ka1224.cif _[local]_cod_data_source_block cl3yz _cod_original_cell_volume 1999.4(2) _cod_database_code 2006124 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 S1 0.0505(3) 0.0496(3) 0.0451(3) 0.0064(3) 0.0015(2) -0.0007(2) S2 0.0642(4) 0.0570(4) 0.0459(3) -0.0100(3) -0.0008(3) 0.0067(3) Si1 0.0408(3) 0.0388(3) 0.0451(3) 0.0107(2) 0.0061(2) 0.0048(2) Si2 0.0379(3) 0.0468(3) 0.0427(3) 0.0098(2) 0.0015(2) 0.0046(3) C11 0.0560(14) 0.0405(11) 0.0491(13) 0.0142(10) 0.0070(10) 0.0036(10) C12 0.0612(15) 0.0407(12) 0.0493(13) 0.0119(11) 0.0038(11) 0.0011(10) C13 0.082(2) 0.0428(14) 0.094(2) 0.0039(14) -0.002(2) 0.0020(14) C14 0.116(3) 0.038(2) 0.139(3) 0.020(2) 0.000(2) 0.005(2) C15 0.098(3) 0.054(2) 0.137(3) 0.040(2) 0.010(2) 0.012(2) C16 0.066(2) 0.0511(15) 0.095(2) 0.0254(14) 0.011(2) 0.0095(14) C21 0.0445(12) 0.0473(12) 0.0575(14) 0.0138(10) 0.0080(10) 0.0038(10) C22 0.0501(15) 0.078(2) 0.066(2) 0.0177(13) 0.0042(13) 0.0086(14) C23 0.054(2) 0.091(2) 0.086(2) 0.023(2) -0.009(2) 0.004(2) C24 0.042(2) 0.095(2) 0.112(3) 0.0127(15) 0.002(2) 0.004(2) C25 0.053(2) 0.148(4) 0.099(3) 0.009(2) 0.024(2) 0.026(3) C26 0.050(2) 0.117(3) 0.067(2) 0.010(2) 0.0102(15) 0.017(2) C31 0.0454(12) 0.0503(13) 0.0450(12) 0.0032(10) 0.0053(10) 0.0079(10) C32 0.075(2) 0.068(2) 0.052(2) 0.0002(14) 0.0094(13) -0.0032(13) C33 0.100(3) 0.103(3) 0.045(2) -0.021(2) 0.007(2) -0.004(2) C34 0.081(2) 0.124(3) 0.064(2) -0.012(2) -0.011(2) 0.039(2) C35 0.097(3) 0.107(3) 0.085(3) 0.035(2) -0.001(2) 0.044(2) C36 0.082(2) 0.074(2) 0.058(2) 0.030(2) 0.0073(14) 0.0197(14) C41 0.0345(10) 0.0449(12) 0.0419(11) 0.0101(9) -0.0012(9) 0.0020(9) C42 0.0499(14) 0.0504(14) 0.059(2) 0.0106(11) 0.0034(12) -0.0006(12) C43 0.067(2) 0.064(2) 0.077(2) 0.0227(15) -0.004(2) -0.022(2) C44 0.067(2) 0.111(3) 0.055(2) 0.031(2) 0.0020(14) -0.024(2) C45 0.065(2) 0.110(3) 0.0449(15) 0.009(2) 0.0127(13) 0.010(2) C46 0.0578(15) 0.058(2) 0.0436(13) 0.0076(12) 0.0039(11) 0.0057(11) C51 0.0380(11) 0.0424(11) 0.0470(12) 0.0085(9) 0.0000(9) 0.0048(9) C52 0.0452(12) 0.0513(13) 0.0486(13) 0.0010(10) 0.0023(10) 0.0048(10) C53 0.067(2) 0.075(2) 0.050(2) -0.0079(14) 0.0097(13) 0.0051(13) C54 0.067(2) 0.076(2) 0.062(2) -0.0122(14) 0.0160(14) 0.0135(15) C55 0.055(2) 0.0531(15) 0.075(2) -0.0085(12) 0.0060(13) 0.0065(13) C56 0.0482(13) 0.0503(13) 0.0562(15) 0.0074(11) -0.0003(11) -0.0004(12) C61 0.0419(12) 0.0602(14) 0.0442(12) 0.0052(10) 0.0056(10) 0.0054(10) C62 0.057(2) 0.088(2) 0.053(2) 0.0166(15) -0.0024(12) 0.0062(14) C63 0.066(2) 0.127(3) 0.061(2) 0.012(2) -0.013(2) 0.016(2) C64 0.085(2) 0.103(3) 0.051(2) -0.012(2) 0.004(2) -0.011(2) C65 0.086(2) 0.075(2) 0.066(2) -0.004(2) 0.010(2) -0.016(2) C66 0.065(2) 0.061(2) 0.058(2) 0.0053(13) 0.0048(13) -0.0029(13) C71 0.0393(12) 0.0508(13) 0.0594(14) 0.0124(10) 0.0030(10) -0.0040(11) C72 0.055(2) 0.076(2) 0.079(2) 0.0220(14) 0.0136(14) 0.006(2) C73 0.057(2) 0.089(2) 0.126(3) 0.020(2) 0.031(2) 0.006(2) C74 0.048(2) 0.090(2) 0.138(3) 0.024(2) 0.005(2) -0.011(2) C75 0.074(2) 0.109(3) 0.109(3) 0.049(2) -0.015(2) 0.007(2) C76 0.061(2) 0.089(2) 0.082(2) 0.035(2) 0.002(2) 0.016(2) C81 0.0412(12) 0.0518(13) 0.0465(12) 0.0132(10) -0.0010(10) 0.0065(10) C82 0.066(2) 0.060(2) 0.070(2) 0.0182(13) 0.0200(14) 0.0181(13) C83 0.088(2) 0.064(2) 0.092(2) 0.020(2) 0.020(2) 0.034(2) C84 0.096(2) 0.063(2) 0.109(3) 0.039(2) 0.019(2) 0.024(2) C85 0.089(2) 0.081(2) 0.102(3) 0.049(2) 0.033(2) 0.025(2) C86 0.062(2) 0.064(2) 0.076(2) 0.0245(13) 0.0212(14) 0.0231(14) loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_thermal_displace_type _atom_site_calc_flag _atom_site_occupancy _atom_site_type_symbol S1 0.03921(6) 0.47585(6) 0.85202(3) 0.0495(2) Uani d 1 S S2 -0.03037(7) 0.46044(7) 0.76301(3) 0.0597(2) Uani d 1 S Si1 0.39098(6) 0.64333(6) 0.87343(3) 0.0411(2) Uani d 1 Si Si2 -0.10654(6) 0.33183(6) 0.62422(3) 0.0425(2) Uani d 1 Si C11 0.3296(3) 0.4484(2) 0.87169(10) 0.0479(5) Uani d 1 C C12 0.1800(3) 0.3789(2) 0.86015(10) 0.0505(5) Uani d 1 C C13 0.1364(4) 0.2350(3) 0.86006(15) 0.0753(8) Uani d 1 C C14 0.2417(5) 0.1588(3) 0.8719(2) 0.0982(12) Uani d 1 C C15 0.3891(5) 0.2245(3) 0.8837(2) 0.0928(11) Uani d 1 C C16 0.4326(4) 0.3669(3) 0.88319(14) 0.0686(7) Uani d 1 C C21 0.5992(2) 0.6964(2) 0.88543(11) 0.0490(5) Uani d 1 C C22 0.6721(3) 0.6960(3) 0.94241(14) 0.0641(7) Uani d 1 C C23 0.8249(3) 0.7364(4) 0.9532(2) 0.0771(9) Uani d 1 C C24 0.9083(3) 0.7769(4) 0.9079(2) 0.0840(10) Uani d 1 C C25 0.8409(4) 0.7802(5) 0.8525(2) 0.1006(13) Uani d 1 C C26 0.6877(3) 0.7400(4) 0.8409(2) 0.0788(9) Uani d 1 C C31 0.3259(2) 0.7055(2) 0.80070(10) 0.0479(5) Uani d 1 C C32 0.3504(3) 0.6431(3) 0.74682(12) 0.0677(7) Uani d 1 C C33 0.3033(5) 0.6899(5) 0.69270(14) 0.0897(11) Uani d 1 C C34 0.2313(4) 0.7957(5) 0.6912(2) 0.0949(12) Uani d 1 C C35 0.2038(4) 0.8563(4) 0.7429(2) 0.0937(11) Uani d 1 C C36 0.2500(3) 0.8106(3) 0.79687(14) 0.0688(7) Uani d 1 C C41 0.3203(2) 0.7213(2) 0.93937(9) 0.0406(5) Uani d 1 C C42 0.3499(3) 0.8643(3) 0.95089(12) 0.0535(6) Uani d 1 C C43 0.2992(3) 0.9246(3) 0.99902(14) 0.0697(8) Uani d 1 C C44 0.2200(4) 0.8436(4) 1.03756(14) 0.0769(9) Uani d 1 C C45 0.1913(3) 0.7025(4) 1.02855(12) 0.0743(9) Uani d 1 C C46 0.2407(3) 0.6413(3) 0.97986(11) 0.0541(6) Uani d 1 C C51 -0.1973(2) 0.2458(2) 0.68896(10) 0.0428(5) Uani d 1 C C52 -0.1672(2) 0.2999(2) 0.74861(10) 0.0500(5) Uani d 1 C C53 -0.2424(3) 0.2333(3) 0.79343(13) 0.0677(7) Uani d 1 C C54 -0.3450(3) 0.1092(3) 0.78039(13) 0.0717(8) Uani d 1 C C55 -0.3768(3) 0.0524(3) 0.72285(13) 0.0643(7) Uani d 1 C C56 -0.3049(3) 0.1207(2) 0.67798(12) 0.0526(6) Uani d 1 C C61 -0.2014(2) 0.2324(3) 0.55290(10) 0.0496(5) Uani d 1 C C62 -0.3121(3) 0.2755(4) 0.51868(12) 0.0662(7) Uani d 1 C C63 -0.3855(4) 0.1944(5) 0.4670(2) 0.0873(11) Uani d 1 C C64 -0.3491(4) 0.0733(4) 0.45097(15) 0.0853(10) Uani d 1 C C65 -0.2407(4) 0.0296(4) 0.48346(14) 0.0795(9) Uani d 1 C C66 -0.1669(3) 0.1088(3) 0.53374(13) 0.0631(7) Uani d 1 C C71 0.0929(2) 0.3208(2) 0.62817(11) 0.0499(5) Uani d 1 C C72 0.1786(3) 0.3659(3) 0.58210(15) 0.0685(7) Uani d 1 C C73 0.3245(4) 0.3530(4) 0.5829(2) 0.0887(10) Uani d 1 C C74 0.3861(4) 0.2946(4) 0.6289(2) 0.0914(11) Uani d 1 C C75 0.3066(4) 0.2493(4) 0.6747(2) 0.0948(11) Uani d 1 C C76 0.1598(3) 0.2614(3) 0.6750(2) 0.0744(8) Uani d 1 C C81 -0.1384(2) 0.5125(2) 0.62218(10) 0.0463(5) Uani d 1 C C82 -0.0632(3) 0.6112(3) 0.58697(13) 0.0632(7) Uani d 1 C C83 -0.0962(4) 0.7396(3) 0.5829(2) 0.0795(9) Uani d 1 C C84 -0.2023(4) 0.7747(3) 0.6139(2) 0.0846(10) Uani d 1 C C85 -0.2780(4) 0.6820(3) 0.6494(2) 0.0842(10) Uani d 1 C C86 -0.2474(3) 0.5517(3) 0.65332(13) 0.0643(7) Uani d 1 C H13 0.032(3) 0.186(3) 0.8511(13) 0.076(9) Uiso d 1 H H14 0.201(4) 0.065(4) 0.8713(16) 0.119(13) Uiso d 1 H H15 0.455(4) 0.179(4) 0.8916(15) 0.097(11) Uiso d 1 H H16 0.532(3) 0.413(3) 0.8870(12) 0.065(8) Uiso d 1 H H22 0.620(3) 0.667(3) 0.9722(13) 0.077(9) Uiso d 1 H H23 0.862(4) 0.733(4) 0.9912(17) 0.104(12) Uiso d 1 H H24 1.018(4) 0.813(3) 0.9165(13) 0.086(9) Uiso d 1 H H25 0.889(5) 0.805(4) 0.8211(19) 0.134(15) Uiso d 1 H H26 0.645(4) 0.741(3) 0.8060(14) 0.081(10) Uiso d 1 H H32 0.404(3) 0.554(3) 0.7489(13) 0.081(9) Uiso d 1 H H33 0.322(4) 0.641(4) 0.6611(18) 0.115(13) Uiso d 1 H H34 0.195(4) 0.830(4) 0.6532(18) 0.118(12) Uiso d 1 H H35 0.150(5) 0.930(4) 0.7406(18) 0.128(14) Uiso d 1 H H36 0.237(4) 0.853(4) 0.8339(16) 0.100(11) Uiso d 1 H H42 0.395(3) 0.921(3) 0.9247(11) 0.056(7) Uiso d 1 H H43 0.316(3) 1.014(3) 1.0044(13) 0.079(9) Uiso d 1 H H44 0.182(4) 0.883(3) 1.0686(15) 0.087(10) Uiso d 1 H H45 0.139(3) 0.642(3) 1.0534(13) 0.077(9) Uiso d 1 H H46 0.218(3) 0.548(3) 0.9738(11) 0.056(7) Uiso d 1 H H53 -0.223(3) 0.270(3) 0.8308(14) 0.086(10) Uiso d 1 H H54 -0.395(3) 0.067(3) 0.8102(13) 0.080(9) Uiso d 1 H H55 -0.452(3) -0.031(3) 0.7134(12) 0.075(8) Uiso d 1 H H56 -0.325(3) 0.080(2) 0.6381(11) 0.052(7) Uiso d 1 H H62 -0.334(3) 0.361(3) 0.5289(10) 0.048(7) Uiso d 1 H H63 -0.443(4) 0.233(4) 0.4528(16) 0.092(12) Uiso d 1 H H64 -0.397(4) 0.020(4) 0.4182(17) 0.108(12) Uiso d 1 H H65 -0.216(4) -0.054(4) 0.4703(17) 0.114(13) Uiso d 1 H H66 -0.093(4) 0.075(3) 0.5565(14) 0.086(10) Uiso d 1 H H72 0.130(3) 0.398(3) 0.5474(13) 0.073(8) Uiso d 1 H H73 0.377(4) 0.384(4) 0.5480(17) 0.116(13) Uiso d 1 H H74 0.499(4) 0.281(4) 0.6347(16) 0.124(13) Uiso d 1 H H75 0.339(4) 0.217(4) 0.7099(17) 0.114(13) Uiso d 1 H H76 0.103(4) 0.230(3) 0.7067(14) 0.087(10) Uiso d 1 H H82 0.007(3) 0.586(3) 0.5663(13) 0.081(9) Uiso d 1 H H83 -0.041(3) 0.804(3) 0.5598(14) 0.083(9) Uiso d 1 H H84 -0.223(4) 0.868(4) 0.6145(16) 0.116(12) Uiso d 1 H H85 -0.350(4) 0.706(4) 0.6727(16) 0.106(12) Uiso d 1 H H86 -0.302(3) 0.491(3) 0.6759(13) 0.072(8) Uiso d 1 H loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source S S 0.1246 0.1234 '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' 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' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_publ_flag C12 S1 S2 105.93(9) yes C52 S2 S1 106.77(9) yes C31 Si1 C41 113.00(11) yes C31 Si1 C21 109.14(11) yes C41 Si1 C21 106.39(11) yes C31 Si1 C11 109.52(11) yes C41 Si1 C11 109.00(11) yes C21 Si1 C11 109.73(11) yes C71 Si2 C81 114.87(11) yes C71 Si2 C61 106.81(11) yes C81 Si2 C61 107.49(11) yes C71 Si2 C51 110.39(11) yes C81 Si2 C51 108.85(11) yes C61 Si2 C51 108.19(11) yes C16 C11 C12 117.0(2) ? C16 C11 Si1 120.7(2) ? C12 C11 Si1 122.3(2) ? C13 C12 C11 121.5(2) ? C13 C12 S1 118.3(2) ? C11 C12 S1 120.0(2) ? C14 C13 C12 119.5(3) ? C13 C14 C15 120.3(3) ? C14 C15 C16 120.4(3) ? C15 C16 C11 121.4(3) ? C26 C21 C22 116.4(2) ? C26 C21 Si1 123.7(2) ? C22 C21 Si1 119.9(2) ? C23 C22 C21 121.6(3) ? C24 C23 C22 120.2(3) ? C25 C24 C23 119.5(3) ? C24 C25 C26 121.0(3) ? C21 C26 C25 121.3(3) ? C36 C31 C32 116.7(2) ? C36 C31 Si1 123.1(2) ? C32 C31 Si1 120.2(2) ? C33 C32 C31 120.3(3) ? C34 C33 C32 120.9(3) ? C33 C34 C35 119.9(3) ? C34 C35 C36 119.7(4) ? C35 C36 C31 122.5(3) ? C42 C41 C46 116.5(2) ? C42 C41 Si1 120.7(2) ? C46 C41 Si1 122.8(2) ? C43 C42 C41 121.9(3) ? C44 C43 C42 120.2(3) ? C43 C44 C45 119.7(3) ? C44 C45 C46 120.4(3) ? C41 C46 C45 121.2(3) ? C52 C51 C56 116.3(2) ? C52 C51 Si2 124.4(2) ? C56 C51 Si2 119.3(2) ? C53 C52 C51 121.0(2) ? C53 C52 S2 122.3(2) ? C51 C52 S2 116.6(2) ? C54 C53 C52 120.3(3) ? C55 C54 C53 120.5(3) ? C54 C55 C56 119.2(2) ? C55 C56 C51 122.6(2) ? C62 C61 C66 117.1(3) ? C62 C61 Si2 121.8(2) ? C66 C61 Si2 121.1(2) ? C61 C62 C63 120.1(3) ? C64 C63 C62 120.4(3) ? C65 C64 C63 120.6(3) ? C64 C65 C66 119.6(4) ? C65 C66 C61 122.3(3) ? C72 C71 C76 117.1(2) ? C72 C71 Si2 120.6(2) ? C76 C71 Si2 122.2(2) ? C73 C72 C71 121.5(3) ? C74 C73 C72 119.9(4) ? C75 C74 C73 120.5(3) ? C74 C75 C76 120.6(4) ? C71 C76 C75 120.3(3) ? C82 C81 C86 116.3(2) ? C82 C81 Si2 122.7(2) ? C86 C81 Si2 120.9(2) ? C83 C82 C81 121.6(3) ? C84 C83 C82 120.6(3) ? C83 C84 C85 119.9(3) ? C84 C85 C86 120.1(3) ? C85 C86 C81 121.5(3) ? loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_publ_flag S1 C12 1.783(3) yes S1 S2 2.0374(14) yes S2 C52 1.797(3) yes Si1 C31 1.869(2) yes Si1 C41 1.875(2) yes Si1 C21 1.879(3) yes Si1 C11 1.882(3) yes Si2 C71 1.872(3) yes Si2 C81 1.874(3) yes Si2 C61 1.883(3) yes Si2 C51 1.888(2) yes C11 C16 1.393(4) ? C11 C12 1.402(3) ? C12 C13 1.390(4) ? C13 C14 1.373(5) ? C14 C15 1.376(5) ? C15 C16 1.377(4) ? C21 C26 1.375(4) ? C21 C22 1.396(4) ? C22 C23 1.381(4) ? C23 C24 1.357(5) ? C24 C25 1.348(5) ? C25 C26 1.387(5) ? C31 C36 1.379(4) ? C31 C32 1.395(4) ? C32 C33 1.390(5) ? C33 C34 1.359(6) ? C34 C35 1.355(6) ? C35 C36 1.379(4) ? C41 C42 1.387(3) ? C41 C46 1.388(3) ? C42 C43 1.380(4) ? C43 C44 1.359(5) ? C44 C45 1.363(5) ? C45 C46 1.389(4) ? C51 C52 1.403(3) ? C51 C56 1.404(3) ? C52 C53 1.385(4) ? C53 C54 1.379(4) ? C54 C55 1.369(4) ? C55 C56 1.379(4) ? C61 C62 1.382(4) ? C61 C66 1.388(4) ? C62 C63 1.413(5) ? C63 C64 1.355(6) ? C64 C65 1.349(5) ? C65 C66 1.382(4) ? C71 C72 1.391(4) ? C71 C76 1.392(4) ? C72 C73 1.386(4) ? C73 C74 1.351(5) ? C74 C75 1.355(6) ? C75 C76 1.393(5) ? C81 C82 1.390(3) ? C81 C86 1.391(4) ? C82 C83 1.374(4) ? C83 C84 1.352(5) ? C84 C85 1.361(5) ? C85 C86 1.382(4) ? loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_publ_flag S1 C52 3.081(3) yes S1 C53 3.266(3) yes S2 C12 3.054(3) yes 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_publ_flag C12 S1 S2 C52 84.10(10) yes