#------------------------------------------------------------------------------ #$Date: 2016-02-19 14:29:56 +0000 (Fri, 19 Feb 2016) $ #$Revision: 176759 $ #$URL: svn://www.crystallography.net/cod/cif/2/00/62/2006236.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_2006236 loop_ _publ_author_name 'Lewinski, Krzysztof ' _publ_contact_author ; Dr Krzysztof Lewinski Faculty of Chemistry Jagiellonian University ul. Ingardena 3 30-060 Krakow, Poland ; _publ_section_title ;(2R,3R,4S)-3-(tert-Butyldiphenylsiloxy)-4-hydroxy-3-methylhex-5-ene-1,2-diyl Diacetate ; _journal_issue 6 _journal_name_full 'Acta Crystallographica Section C' _journal_page_first 753 _journal_page_last 755 _journal_paper_doi 10.1107/S0108270197000498 _journal_volume 53 _journal_year 1997 _chemical_formula_moiety 'C27 H36 O6 Si' _chemical_formula_sum 'C27 H36 O6 Si' _chemical_formula_weight 484.65 _chemical_name_systematic ; (3S,4R,5R)-5,6-diacetoxy-4-(t-butyldiphenylsilyloxy)-3-hydroxy -4-methylhex-1-en ; _space_group_IT_number 4 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall 'P 2yb' _symmetry_space_group_name_H-M 'P 1 21 1' _audit_creation_method 'SHELXL and manual' _cell_angle_alpha 90.00 _cell_angle_beta 92.300(10) _cell_angle_gamma 90.00 _cell_formula_units_Z 2 _cell_length_a 10.8380(10) _cell_length_b 9.3470(10) _cell_length_c 13.4560(10) _cell_measurement_reflns_used 25 _cell_measurement_temperature 293(2) _cell_measurement_theta_max 17.5 _cell_measurement_theta_min 14.0 _cell_volume 1362.0(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 'ORTEPII (Johnson, 1976)' _computing_publication_material 'PARST (Nardelli, 1983)' _computing_structure_refinement 'SHELXL93 (Sheldrick, 1993)' _computing_structure_solution 'SHELXS86 (Sheldrick, 1990)' _diffrn_ambient_temperature 293(2) _diffrn_measurement_device CAD-4 _diffrn_measurement_method '\w/2\q scan' _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71069 _diffrn_reflns_av_R_equivalents 0.0235 _diffrn_reflns_av_sigmaI/netI 0.0163 _diffrn_reflns_limit_h_max 12 _diffrn_reflns_limit_h_min -12 _diffrn_reflns_limit_k_max 11 _diffrn_reflns_limit_k_min -11 _diffrn_reflns_limit_l_max 15 _diffrn_reflns_limit_l_min 0 _diffrn_reflns_number 4964 _diffrn_reflns_theta_max 24.97 _diffrn_reflns_theta_min 2.37 _diffrn_standards_decay_% 0.5 _diffrn_standards_interval_time 120 _diffrn_standards_number 3 _exptl_absorpt_coefficient_mu 0.123 _exptl_absorpt_correction_type none _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.182 _exptl_crystal_density_meas ? _exptl_crystal_description prismatic _exptl_crystal_F_000 520 _exptl_crystal_size_max 0.6 _exptl_crystal_size_mid 0.5 _exptl_crystal_size_min 0.4 _refine_diff_density_max 0.135 _refine_diff_density_min -0.150 _refine_ls_abs_structure_details 'Flack (1983)' _refine_ls_abs_structure_Flack -0.05(10) _refine_ls_extinction_coef 0.016(2) _refine_ls_extinction_method 'SHELXL93 (Sheldrick, 1993)' _refine_ls_goodness_of_fit_all 1.021 _refine_ls_goodness_of_fit_obs 1.037 _refine_ls_hydrogen_treatment 'H atoms: see text' _refine_ls_matrix_type full _refine_ls_number_parameters 352 _refine_ls_number_reflns 4755 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.021 _refine_ls_restrained_S_obs 1.037 _refine_ls_R_factor_all 0.0345 _refine_ls_R_factor_obs .0317 _refine_ls_shift/esd_max 0.002 _refine_ls_shift/esd_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'w = 1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.1165P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_all 0.0869 _refine_ls_wR_factor_obs .0856 _reflns_number_observed 4485 _reflns_number_total 4755 _reflns_observed_criterion >2sigma(I) _cod_data_source_file na1274.cif _cod_data_source_block MR13 _cod_depositor_comments ; The following automatic conversions were performed: '_exptl_crystal_density_meas' value 'not measured' was changed to '?' - the value is perceived as not measured. Automatic conversion script Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas The following automatic conversions were performed: '_refine_ls_weighting_scheme' value 'calc w = 1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.1165P] where P=(Fo^2^+2Fc^2^)/3' was changed to 'calc'. New tag '_refine_ls_weighting_details' was created. The value of the new tag was set to 'w = 1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.1165P] where P=(Fo^2^+2Fc^2^)/3'. Automatic conversion script Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas ; _cod_original_sg_symbol_H-M 'P 21' _cod_database_code 2006236 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -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 Si .0358(2) .0435(2) .0369(2) .0000(2) .0030(2) .0023(2) O1 .0612(8) .0720(10) .0460(7) -.0168(8) .0072(7) .0044(7) O2 .0393(6) .0464(7) .0411(6) -.0009(5) -.0015(5) .0072(5) O3 .0588(7) .0511(7) .0428(7) -.0037(6) .0030(5) -.0016(6) O4 .178(2) .0845(13) .0661(11) .001(2) -.0447(13) .0127(10) O5 .0575(8) .0549(8) .0582(8) -.0125(6) -.0094(6) -.0019(6) O6 .0804(11) .0598(9) .0934(12) -.0163(9) -.0160(9) .0143(10) C1 .0564(11) .0536(13) .085(2) -.0016(10) .0070(11) -.0193(11) C2 .0557(11) .0426(11) .0661(12) -.0018(8) .0107(9) -.0064(9) C3 .0458(9) .0507(10) .0446(9) -.0124(8) .0042(7) -.0044(8) C4 .0367(8) .0395(8) .0414(9) -.0012(7) -.0004(7) .0074(7) C5 .0409(9) .0421(9) .0462(9) .0015(7) -.0005(7) .0002(7) C6 .0458(10) .0537(11) .0530(10) -.0096(8) -.0019(8) -.0027(9) C7 .0499(11) .0480(11) .0720(13) -.0050(9) -.0004(9) -.0080(10) C8 .093(2) .080(2) .100(2) -.029(2) -.022(2) -.011(2) C9 .0465(10) .0528(11) .0579(11) .0008(8) -.0047(8) .0132(9) C10 .100(2) .067(2) .0471(12) -.0276(14) -.0128(11) .0011(11) C11 .126(3) .139(3) .058(2) -.044(2) .016(2) -.030(2) C21 .0382(8) .0437(10) .0423(8) -.0031(7) .0018(6) -.0002(7) C22 .0426(9) .0477(10) .0507(10) -.0028(8) .0041(8) -.0026(8) C23 .0606(11) .0571(11) .0482(10) -.0104(9) .0108(9) -.0107(9) C24 .0604(12) .0748(13) .0427(10) -.0136(11) -.0059(9) -.0034(10) C25 .0563(11) .0790(15) .0553(11) .0096(11) -.0117(9) .0026(11) C26 .0504(10) .0608(13) .0500(10) .0089(8) -.0010(8) -.0049(8) C31 .0455(9) .0691(13) .0388(9) .0085(9) .0055(7) .0003(9) C32 .0691(14) .080(2) .0540(12) .0108(13) .0047(10) -.0150(11) C33 .103(2) .109(2) .071(2) .025(2) .0180(15) -.029(2) C34 .088(2) .141(3) .078(2) .040(2) .038(2) -.007(2) C35 .0548(14) .137(3) .080(2) .012(2) .0243(12) .004(2) C36 .0448(11) .096(2) .0632(13) .0009(10) .0123(9) -.0029(12) C41 .0556(11) .0543(11) .0503(10) -.0006(9) .0044(8) .0163(9) C42 .084(2) .069(2) .095(2) -.0247(14) -.002(2) .026(2) C43 .103(2) .089(2) .0602(14) -.008(2) -.0222(14) .0305(14) C44 .111(2) .074(2) .109(2) .041(2) .041(2) .048(2) 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 Si .19939(4) .7915 .71663(3) .03868(13) Uani O1 .4991(2) 1.0083(2) .50861(12) .0596(4) Uani H1 .447(3) 1.010(4) .465(2) .091(10) Uiso O2 .32838(10) .88425(14) .72179(8) .0424(3) Uani O3 .40812(12) 1.1339(2) .81330(9) .0509(3) Uani O4 .5168(3) 1.0029(3) .92487(15) .1107(8) Uani O5 .62774(13) 1.2506(2) .75655(10) .0572(4) Uani O6 .6520(2) 1.4475(2) .66640(15) .0784(5) Uani C1 .6666(2) .8159(3) .5918(2) .0650(6) Uani H002 .6893(2) .8735(3) .5392(2) .095(10) Uiso H003 .7242(2) .7551(3) .6226(2) .090(9) Uiso C2 .5540(2) .8205(2) .6223(2) .0546(5) Uani H004 .5353(2) .7612(2) .6751(2) .059(6) Uiso C3 .4523(2) .9128(2) .57994(14) .0470(4) Uani H005 .3928(2) .8498(2) .54487(14) .054(6) Uiso C4 .38193(15) .9928(2) .66186(12) .0393(4) Uani C5 .4739(2) 1.0736(2) .73189(14) .0431(4) Uani H006 .5363(2) 1.0063(2) .75842(14) .042(5) Uiso C6 .5375(2) 1.1974(2) .68382(15) .0509(4) Uani H007 .5776(2) 1.1660(2) .62442(15) .048(5) Uiso H008 .4783(2) 1.2716(2) .66547(15) .064(6) Uiso C7 .6773(2) 1.3774(2) .7379(2) .0567(5) Uani C8 .7720(3) 1.4181(4) .8176(3) .0916(9) Uani H009 .7423(11) 1.393(3) .8815(3) .115(12) Uiso H010 .7864(18) 1.5194(6) .8152(12) .117(12) Uiso H011 .8477(8) 1.368(2) .8069(12) .25(3) Uiso C9 .2834(2) 1.0916(2) .6166(2) .0526(5) Uani H012 .2286(7) 1.0377(4) .5731(8) .056(6) Uiso H013 .3220(2) 1.1657(9) .5795(9) .068(7) Uiso H014 .2375(8) 1.1337(11) .6687(2) .055(6) Uiso C10 .4433(3) 1.0943(3) .9061(2) .0718(7) Uani C11 .3764(3) 1.1832(5) .9803(2) .1074(12) Uani H015 .2910(7) 1.191(3) .9593(11) .117(13) Uiso H016 .4127(17) 1.2768(11) .9844(15) .165(17) Uiso H017 .383(2) 1.1381(16) 1.0443(5) .19(2) Uiso C21 .1405(2) .7564(2) .58503(13) .0414(4) Uani C22 .1988(2) .6647(2) .52014(14) .0470(4) Uani H018 .2685(2) .6144(2) .54265(14) .063(7) Uiso C23 .1550(2) .6469(2) .42270(15) .0551(5) Uani H019 .1954(2) .5849(2) .38081(15) .057(6) Uiso C24 .0527(2) .7198(3) .38765(15) .0595(5) Uani H020 .0235(2) .7071(3) .32231(15) .070(7) Uiso C25 -.0067(2) .8119(3) .4497(2) .0639(6) Uani H021 -.0762(2) .8618(3) .4263(2) .060(6) Uiso C26 .0372(2) .8299(2) .54659(15) .0538(5) Uani H022 -.0034(2) .8930(2) .58756(15) .056(6) Uiso C31 .0751(2) .8907(2) .78238(13) .0511(5) Uani C32 .1011(2) 1.0090(3) .8400(2) .0675(6) Uani H023 .1814(2) 1.0442(3) .8438(2) .089(9) Uiso C33 .0110(3) 1.0776(4) .8927(2) .0943(9) Uani H024 .0311(3) 1.1570(4) .9317(2) .085(8) Uiso C34 -.1082(3) 1.0274(5) .8869(2) .1016(11) Uani H025 -.1692(3) 1.0736(5) .9216(2) .101(10) Uiso C35 -.1372(2) .9104(4) .8307(2) .0899(9) Uani H026 -.2178(2) .8761(4) .8276(2) .093(9) Uiso C36 -.0472(2) .8422(3) .7782(2) .0677(6) Uani H027 -.0682(2) .7628(3) .7395(2) .065(7) Uiso C41 .2395(2) .6244(2) .79157(15) .0533(5) Uani C42 .1247(3) .5319(3) .8040(2) .0829(8) Uani H028 .0666(8) .5829(10) .8428(13) .125(14) Uiso H029 .1479(4) .4446(10) .8373(14) .105(10) Uiso H030 .0876(12) .5104(19) .7398(3) .113(12) Uiso C43 .2871(3) .6748(3) .8942(2) .0846(9) Uani H031 .2240(9) .729(2) .9250(8) .133(15) Uiso H032 .3589(14) .734(2) .8872(2) .18(2) Uiso H033 .308(2) .5933(4) .9347(6) .100(10) Uiso C44 .3372(3) .5328(3) .7438(3) .0973(11) Uani H034 .4105(7) .5886(7) .7359(14) .089(9) Uiso H035 .3064(8) .5001(18) .6799(7) .25(3) Uiso H036 .3563(14) .4518(12) .7856(8) .084(8) Uiso 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' O O 0.0106 0.0060 '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' 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_publ_flag O2 Si C31 110.08(8) yes O2 Si C21 112.73(7) yes C31 Si C21 107.73(8) yes O2 Si C41 103.60(8) yes C31 Si C41 107.92(9) yes C21 Si C41 114.64(9) yes C3 O1 H1 105.(2) no C4 O2 Si 135.43(10) yes C10 O3 C5 117.8(2) yes C7 O5 C6 116.6(2) yes C2 C1 H002 120.0(2) no C2 C1 H003 120.0(2) no H002 C1 H003 120.0 no C1 C2 C3 125.7(2) yes C1 C2 H004 117.1(2) no C3 C2 H004 117.13(10) no O1 C3 C2 110.1(2) yes O1 C3 C4 112.0(2) yes C2 C3 C4 112.44(15) yes O1 C3 H005 107.33(10) no C2 C3 H005 107.33(10) no C4 C3 H005 107.33(9) no O2 C4 C9 111.19(14) yes O2 C4 C5 105.62(13) yes C9 C4 C5 111.9(2) yes O2 C4 C3 106.22(13) yes C9 C4 C3 111.39(15) yes C5 C4 C3 110.18(13) yes O3 C5 C6 105.90(15) yes O3 C5 C4 109.15(13) yes C6 C5 C4 114.18(15) yes O3 C5 H006 109.16(9) no C6 C5 H006 109.16(10) no C4 C5 H006 109.16(9) no O5 C6 C5 106.4(2) yes O5 C6 H007 110.44(10) no C5 C6 H007 110.44(10) no O5 C6 H008 110.44(10) no C5 C6 H008 110.44(10) no H007 C6 H008 108.6 no O6 C7 O5 124.2(2) yes O6 C7 C8 124.6(2) yes O5 C7 C8 111.2(2) yes C7 C8 H009 109.5(2) no C7 C8 H010 109.5(2) no H009 C8 H010 109.5 no C7 C8 H011 109.5(2) no H009 C8 H011 109.5 no H010 C8 H011 109.5 no C4 C9 H012 109.47(11) no C4 C9 H013 109.47(10) no H012 C9 H013 109.5 no C4 C9 H014 109.47(11) no H012 C9 H014 109.5 no H013 C9 H014 109.5 no O4 C10 O3 124.0(3) yes O4 C10 C11 126.3(3) yes O3 C10 C11 109.7(3) yes C10 C11 H015 109.5(2) no C10 C11 H016 109.5(2) no H015 C11 H016 109.5 no C10 C11 H017 109.5(2) no H015 C11 H017 109.5 no H016 C11 H017 109.5 no C22 C21 C26 116.6(2) no C22 C21 Si 123.36(13) no C26 C21 Si 119.94(13) no C23 C22 C21 121.3(2) no C23 C22 H018 119.35(12) no C21 C22 H018 119.35(10) no C24 C23 C22 120.5(2) no C24 C23 H019 119.73(12) no C22 C23 H019 119.74(12) no C23 C24 C25 119.6(2) no C23 C24 H020 120.18(12) no C25 C24 H020 120.18(12) no C24 C25 C26 119.8(2) no C24 C25 H021 120.11(12) no C26 C25 H021 120.11(12) no C25 C26 C21 122.1(2) no C25 C26 H022 118.94(12) no C21 C26 H022 118.94(11) no C32 C31 C36 117.1(2) no C32 C31 Si 121.8(2) no C36 C31 Si 121.0(2) no C31 C32 C33 121.9(3) no C31 C32 H023 119.07(13) no C33 C32 H023 119.1(2) no C34 C33 C32 119.6(3) no C34 C33 H024 120.2(2) no C32 C33 H024 120.2(2) no C35 C34 C33 120.1(2) no C35 C34 H025 119.9(2) no C33 C34 H025 119.9(2) no C34 C35 C36 120.2(3) no C34 C35 H026 119.9(2) no C36 C35 H026 119.9(2) no C35 C36 C31 121.1(3) no C35 C36 H027 119.5(2) no C31 C36 H027 119.46(14) no C44 C41 C43 109.8(2) no C44 C41 C42 108.1(2) no C43 C41 C42 108.8(2) no C44 C41 Si 112.73(14) no C43 C41 Si 106.7(2) no C42 C41 Si 110.7(2) no C41 C42 H028 109.5(2) no C41 C42 H029 109.47(13) no H028 C42 H029 109.5 no C41 C42 H030 109.47(15) no H028 C42 H030 109.5 no H029 C42 H030 109.5 no C41 C43 H031 109.5(2) no C41 C43 H032 109.47(14) no H031 C43 H032 109.5 no C41 C43 H033 109.47(13) no H031 C43 H033 109.5 no H032 C43 H033 109.5 no C41 C44 H034 109.5(2) no C41 C44 H035 109.5(2) no H034 C44 H035 109.5 no C41 C44 H036 109.47(12) no H034 C44 H036 109.5 no H035 C44 H036 109.5 no loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag Si O2 . 1.6441(12) yes Si C31 . 1.885(2) yes Si C21 . 1.887(2) yes Si C41 . 1.900(2) yes O1 C3 . 1.419(2) yes O1 H1 . .80(3) no O2 C4 . 1.433(2) yes O3 C10 . 1.343(3) yes O3 C5 . 1.445(2) yes O4 C10 . 1.188(4) yes O5 C7 . 1.330(3) yes O5 C6 . 1.444(2) yes O6 C7 . 1.187(3) yes C1 C2 . 1.304(3) yes C1 H002 . .93 no C1 H003 . .93 no C2 C3 . 1.495(3) yes C2 H004 . .93 no C3 C4 . 1.557(2) yes C3 H005 . .98 no C4 C9 . 1.520(2) yes C4 C5 . 1.541(2) yes C5 C6 . 1.506(3) yes C5 H006 . .98 no C6 H007 . .97 no C6 H008 . .97 no C7 C8 . 1.502(3) yes C8 H009 . .96 no C8 H010 . .96 no C8 H011 . .96 no C9 H012 . .96 no C9 H013 . .96 no C9 H014 . .96 no C10 C11 . 1.507(4) yes C11 H015 . .96 no C11 H016 . .96 no C11 H017 . .96 no C21 C22 . 1.394(2) no C21 C26 . 1.394(3) no C22 C23 . 1.387(3) no C22 H018 . .93 no C23 C24 . 1.369(3) no C23 H019 . .93 no C24 C25 . 1.377(3) no C24 H020 . .93 no C25 C26 . 1.381(3) no C25 H021 . .93 no C26 H022 . .93 no C31 C32 . 1.374(3) no C31 C36 . 1.399(3) no C32 C33 . 1.386(4) no C32 H023 . .93 no C33 C34 . 1.374(5) no C33 H024 . .93 no C34 C35 . 1.359(5) no C34 H025 . .93 no C35 C36 . 1.384(4) no C35 H026 . .93 no C36 H027 . .93 no C41 C44 . 1.524(3) no C41 C43 . 1.529(3) no C41 C42 . 1.529(3) no C42 H028 . .96 no C42 H029 . .96 no C42 H030 . .96 no C43 H031 . .96 no C43 H032 . .96 no C43 H033 . .96 no C44 H034 . .96 no C44 H035 . .96 no C44 H036 . .96 no 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 C31 Si O2 C4 -88.6(2) no C21 Si O2 C4 31.7(2) no C41 Si O2 C4 156.2(2) no C1 C2 C3 O1 -6.9(3) no C1 C2 C3 C4 -132.6(2) no Si O2 C4 C9 34.9(2) no Si O2 C4 C5 156.56(12) no Si O2 C4 C3 -86.4(2) no O1 C3 C4 O2 173.71(14) no C2 C3 C4 O2 -61.7(2) no O1 C3 C4 C9 52.5(2) no C2 C3 C4 C9 177.1(2) no O1 C3 C4 C5 -72.4(2) no C2 C3 C4 C5 52.2(2) no C10 O3 C5 C6 -115.4(2) no C10 O3 C5 C4 121.2(2) no O2 C4 C5 O3 -59.5(2) no C9 C4 C5 O3 61.6(2) no C3 C4 C5 O3 -173.81(14) no O2 C4 C5 C6 -177.78(15) no C9 C4 C5 C6 -56.6(2) no C3 C4 C5 C6 67.9(2) no C7 O5 C6 C5 -166.7(2) no O3 C5 C6 O5 65.4(2) no C4 C5 C6 O5 -174.50(14) no C6 O5 C7 O6 0.0(3) no C6 O5 C7 C8 -178.4(2) no C5 O3 C10 O4 -7.6(3) no C5 O3 C10 C11 172.2(2) no O2 Si C21 C22 69.7(2) no C31 Si C21 C22 -168.69(15) no C41 Si C21 C22 -48.6(2) no O2 Si C21 C26 -106.85(15) no C31 Si C21 C26 14.8(2) no C41 Si C21 C26 134.94(15) no C26 C21 C22 C23 -0.6(3) no Si C21 C22 C23 -177.23(15) no C21 C22 C23 C24 0.1(3) no C22 C23 C24 C25 0.3(3) no C23 C24 C25 C26 -0.1(3) no C24 C25 C26 C21 -0.5(3) no C22 C21 C26 C25 0.8(3) no Si C21 C26 C25 177.6(2) no O2 Si C31 C32 -10.8(2) no C21 Si C31 C32 -134.1(2) no C41 Si C31 C32 101.6(2) no O2 Si C31 C36 172.3(2) no C21 Si C31 C36 49.0(2) no C41 Si C31 C36 -75.3(2) no C36 C31 C32 C33 0.5(4) no Si C31 C32 C33 -176.5(2) no C31 C32 C33 C34 -0.6(5) no C32 C33 C34 C35 0.7(5) no C33 C34 C35 C36 -0.7(5) no C34 C35 C36 C31 0.6(4) no C32 C31 C36 C35 -0.5(4) no Si C31 C36 C35 176.5(2) no O2 Si C41 C44 -64.9(2) no C31 Si C41 C44 178.4(2) no C21 Si C41 C44 58.4(2) no O2 Si C41 C43 55.8(2) no C31 Si C41 C43 -61.0(2) no C21 Si C41 C43 179.0(2) no O2 Si C41 C42 174.0(2) no C31 Si C41 C42 57.2(2) no C21 Si C41 C42 -62.8(2) no