#------------------------------------------------------------------------------ #$Date: 2016-02-20 18:35:30 +0200 (Sat, 20 Feb 2016) $ #$Revision: 176787 $ #$URL: file:///home/coder/svn-repositories/cod/cif/2/21/16/2211660.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_2211660 loop_ _publ_author_name 'Hua-Ming Huang' 'Qiao-Yun Du' 'Hong-Bing Yang' 'Jian-Ge Wang' _publ_section_title ; 3,3-Bis(3,5-dimethylphenyl)-3H-benzo[f]chromene ; _journal_coeditor_code WN2081 _journal_issue 12 _journal_name_full 'Acta Crystallographica Section E' _journal_page_first o5713 _journal_page_last o5715 _journal_paper_doi 10.1107/S1600536806048136 _journal_volume 62 _journal_year 2006 _chemical_formula_sum 'C29 H26 O' _chemical_formula_weight 390.50 _chemical_name_systematic ; ? ; _space_group_IT_number 14 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall '-P 2yn' _symmetry_space_group_name_H-M 'P 1 21/n 1' _atom_sites_solution_hydrogens geom _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _audit_creation_method SHELXL-97 _cell_angle_alpha 90.00 _cell_angle_beta 94.1240(10) _cell_angle_gamma 90.00 _cell_formula_units_Z 4 _cell_length_a 11.5290(8) _cell_length_b 11.3445(8) _cell_length_c 16.9415(12) _cell_measurement_reflns_used 2527 _cell_measurement_temperature 291(2) _cell_measurement_theta_max 21.84 _cell_measurement_theta_min 2.52 _cell_volume 2210.1(3) _computing_cell_refinement APEX2 _computing_data_collection 'APEX2, (Bruker 2004)' _computing_data_reduction 'SAINT, (Bruker 2004)' _computing_molecular_graphics 'SHELXTL (Bruker 2004)' _computing_publication_material SHELXTL _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1997)' _diffrn_ambient_temperature 291(2) _diffrn_measured_fraction_theta_full 0.998 _diffrn_measured_fraction_theta_max 0.998 _diffrn_measurement_device_type 'Bruker ApexII CCD area-detector' _diffrn_measurement_method '\f and \w 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 0.0263 _diffrn_reflns_av_sigmaI/netI 0.0354 _diffrn_reflns_limit_h_max 14 _diffrn_reflns_limit_h_min -14 _diffrn_reflns_limit_k_max 14 _diffrn_reflns_limit_k_min -14 _diffrn_reflns_limit_l_max 21 _diffrn_reflns_limit_l_min -12 _diffrn_reflns_number 13103 _diffrn_reflns_theta_full 27.50 _diffrn_reflns_theta_max 27.50 _diffrn_reflns_theta_min 2.52 _diffrn_standards_number 0 _exptl_absorpt_coefficient_mu 0.069 _exptl_absorpt_correction_T_max 0.9941 _exptl_absorpt_correction_T_min 0.9759 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details '(SADABS; Sheldrick,1996)' _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.174 _exptl_crystal_density_method 'not measured' _exptl_crystal_description block _exptl_crystal_F_000 832 _exptl_crystal_size_max 0.35 _exptl_crystal_size_mid 0.18 _exptl_crystal_size_min 0.09 _refine_diff_density_max 0.179 _refine_diff_density_min -0.159 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.025 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 275 _refine_ls_number_reflns 5053 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.025 _refine_ls_R_factor_all 0.0893 _refine_ls_R_factor_gt 0.0489 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.065P)^2^+0.2364P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1242 _refine_ls_wR_factor_ref 0.1460 _reflns_number_gt 3024 _reflns_number_total 5053 _reflns_threshold_expression I>2\s(I) _cod_data_source_file wn2081.cif _cod_data_source_block VI _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. Automatic conversion script Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius The following automatic conversions were performed: '_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic' according to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. Automatic conversion script Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana ; _cod_original_sg_symbol_H-M 'P 21/n' _cod_database_code 2211660 _cod_database_fobs_code 2211660 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x+1/2, y+1/2, -z+1/2' '-x, -y, -z' 'x-1/2, -y-1/2, z-1/2' loop_ _atom_site_type_symbol _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_calc_flag _atom_site_refinement_flags _atom_site_occupancy O O1 -0.05573(9) 0.52133(10) 0.22760(7) 0.0499(3) Uani d . 1 C C1 0.02356(14) 0.70141(14) 0.28369(10) 0.0471(4) Uani d . 1 C C2 0.00158(15) 0.81414(15) 0.31856(10) 0.0501(4) Uani d . 1 C C3 0.09189(18) 0.88901(16) 0.34917(12) 0.0638(5) Uani d . 1 H H3 0.1690 0.8664 0.3461 0.077 Uiso calc R 1 C C4 0.0671(2) 0.99450(19) 0.38335(14) 0.0786(6) Uani d . 1 H H4 0.1277 1.0429 0.4029 0.094 Uiso calc R 1 C C5 -0.0481(2) 1.03080(19) 0.38940(13) 0.0786(6) Uani d . 1 H H5 -0.0636 1.1029 0.4125 0.094 Uiso calc R 1 C C6 -0.13680(19) 0.96044(17) 0.36139(12) 0.0664(5) Uani d . 1 H H6 -0.2131 0.9844 0.3660 0.080 Uiso calc R 1 C C7 -0.11483(15) 0.85058(15) 0.32505(10) 0.0526(4) Uani d . 1 C C8 -0.20620(16) 0.77609(17) 0.29728(11) 0.0599(5) Uani d . 1 H H8 -0.2827 0.8009 0.3001 0.072 Uiso calc R 1 C C9 -0.18454(15) 0.66785(17) 0.26615(11) 0.0571(5) Uani d . 1 H H9 -0.2459 0.6190 0.2486 0.069 Uiso calc R 1 C C10 -0.07002(14) 0.63104(15) 0.26090(10) 0.0469(4) Uani d . 1 C C11 0.13810(14) 0.65912(16) 0.26738(11) 0.0548(5) Uani d . 1 H H11 0.2014 0.7102 0.2712 0.066 Uiso calc R 1 C C12 0.15246(15) 0.54795(16) 0.24703(11) 0.0547(5) Uani d . 1 H H12 0.2246 0.5232 0.2320 0.066 Uiso calc R 1 C C13 0.05385(13) 0.46006(15) 0.24772(10) 0.0463(4) Uani d . 1 C C14 0.05931(13) 0.36723(15) 0.18275(10) 0.0473(4) Uani d . 1 C C15 0.08758(15) 0.40152(17) 0.10790(11) 0.0568(5) Uani d . 1 H H15 0.1049 0.4803 0.0990 0.068 Uiso calc R 1 C C16 0.09075(16) 0.32194(19) 0.04607(10) 0.0601(5) Uani d . 1 C C17 0.06515(15) 0.20493(18) 0.06114(11) 0.0603(5) Uani d . 1 H H17 0.0681 0.1502 0.0205 0.072 Uiso calc R 1 C C18 0.03534(15) 0.16678(17) 0.13457(11) 0.0553(5) Uani d . 1 C C19 0.03291(14) 0.24949(16) 0.19521(10) 0.0508(4) Uani d . 1 H H19 0.0132 0.2254 0.2450 0.061 Uiso calc R 1 C C20 0.1227(2) 0.3622(2) -0.03457(12) 0.0925(8) Uani d . 1 H H20A 0.2052 0.3558 -0.0377 0.139 Uiso calc R 1 H H20B 0.0994 0.4428 -0.0427 0.139 Uiso calc R 1 H H20C 0.0837 0.3137 -0.0746 0.139 Uiso calc R 1 C C21 0.0056(2) 0.03991(19) 0.14847(14) 0.0859(7) Uani d . 1 H H21A -0.0731 0.0251 0.1286 0.129 Uiso calc R 1 H H21B 0.0136 0.0235 0.2042 0.129 Uiso calc R 1 H H21C 0.0573 -0.0099 0.1216 0.129 Uiso calc R 1 C C22 0.05351(14) 0.40690(14) 0.33044(9) 0.0439(4) Uani d . 1 C C23 0.15580(15) 0.35773(16) 0.36443(10) 0.0527(4) Uani d . 1 H H23 0.2215 0.3562 0.3357 0.063 Uiso calc R 1 C C24 0.16198(16) 0.31105(17) 0.44007(11) 0.0593(5) Uani d . 1 C C25 0.06333(17) 0.31587(16) 0.48215(11) 0.0602(5) Uani d . 1 H H25 0.0669 0.2861 0.5334 0.072 Uiso calc R 1 C C26 -0.03954(16) 0.36308(15) 0.45067(10) 0.0520(4) Uani d . 1 C C27 -0.04380(14) 0.40774(14) 0.37397(10) 0.0478(4) Uani d . 1 H H27 -0.1132 0.4387 0.3515 0.057 Uiso calc R 1 C C28 -0.14498(18) 0.36910(19) 0.49831(13) 0.0733(6) Uani d . 1 H H28A -0.1582 0.2933 0.5212 0.110 Uiso calc R 1 H H28B -0.2117 0.3913 0.4644 0.110 Uiso calc R 1 H H28C -0.1321 0.4265 0.5397 0.110 Uiso calc R 1 C C29 0.2750(2) 0.2597(2) 0.47629(15) 0.0917(7) Uani d . 1 H H29A 0.3097 0.3137 0.5147 0.138 Uiso calc R 1 H H29B 0.3272 0.2466 0.4355 0.138 Uiso calc R 1 H H29C 0.2595 0.1862 0.5016 0.138 Uiso calc R 1 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 O1 0.0460(6) 0.0500(7) 0.0535(7) 0.0046(5) 0.0024(5) -0.0049(6) C1 0.0486(9) 0.0466(10) 0.0460(9) -0.0020(7) 0.0041(8) 0.0073(8) C2 0.0592(10) 0.0445(10) 0.0467(10) -0.0009(8) 0.0050(8) 0.0103(8) C3 0.0706(12) 0.0522(12) 0.0686(13) -0.0117(9) 0.0046(10) 0.0054(10) C4 0.0965(17) 0.0574(13) 0.0816(16) -0.0184(12) 0.0034(13) -0.0055(11) C5 0.1078(18) 0.0524(13) 0.0753(15) -0.0008(12) 0.0057(13) -0.0086(11) C6 0.0858(14) 0.0528(12) 0.0610(12) 0.0136(10) 0.0082(11) 0.0021(10) C7 0.0631(11) 0.0469(10) 0.0476(10) 0.0054(8) 0.0027(9) 0.0062(8) C8 0.0508(10) 0.0636(12) 0.0649(12) 0.0143(9) 0.0023(9) -0.0026(10) C9 0.0468(10) 0.0617(12) 0.0619(12) 0.0009(8) -0.0023(8) -0.0068(9) C10 0.0484(9) 0.0485(10) 0.0443(9) 0.0057(7) 0.0061(7) 0.0031(8) C11 0.0472(10) 0.0544(11) 0.0639(12) -0.0046(8) 0.0106(8) 0.0067(9) C12 0.0464(10) 0.0585(12) 0.0605(12) 0.0008(8) 0.0129(8) 0.0037(9) C13 0.0408(9) 0.0502(10) 0.0483(10) 0.0070(7) 0.0055(7) -0.0006(8) C14 0.0434(9) 0.0555(11) 0.0436(9) 0.0079(7) 0.0063(7) 0.0014(8) C15 0.0579(11) 0.0612(12) 0.0526(11) 0.0125(8) 0.0127(9) 0.0100(9) C16 0.0576(11) 0.0799(14) 0.0435(10) 0.0212(10) 0.0086(8) 0.0035(10) C17 0.0594(11) 0.0766(14) 0.0446(10) 0.0181(10) 0.0015(9) -0.0133(10) C18 0.0577(10) 0.0599(11) 0.0481(10) 0.0066(8) 0.0017(8) -0.0077(9) C19 0.0537(10) 0.0579(11) 0.0412(9) 0.0035(8) 0.0063(8) -0.0009(8) C20 0.1180(19) 0.111(2) 0.0521(12) 0.0354(15) 0.0294(13) 0.0159(13) C21 0.1142(19) 0.0673(15) 0.0762(15) -0.0059(13) 0.0060(14) -0.0164(12) C22 0.0473(9) 0.0424(9) 0.0422(9) -0.0013(7) 0.0045(7) -0.0065(7) C23 0.0501(10) 0.0587(11) 0.0492(10) 0.0039(8) 0.0036(8) -0.0071(9) C24 0.0652(12) 0.0565(11) 0.0549(11) 0.0018(9) -0.0060(9) -0.0014(9) C25 0.0778(13) 0.0564(11) 0.0460(10) -0.0079(10) 0.0016(10) 0.0030(9) C26 0.0629(11) 0.0433(9) 0.0509(10) -0.0118(8) 0.0125(9) -0.0056(8) C27 0.0484(9) 0.0453(9) 0.0502(10) -0.0022(7) 0.0062(8) -0.0042(8) C28 0.0821(14) 0.0736(14) 0.0678(13) -0.0191(11) 0.0306(11) -0.0039(11) C29 0.0828(15) 0.1089(19) 0.0803(16) 0.0183(14) -0.0169(13) 0.0139(14) 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' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C10 O1 C13 117.39(12) C10 C1 C2 118.27(15) C10 C1 C11 117.48(15) C2 C1 C11 124.19(15) C3 C2 C7 118.26(17) C3 C2 C1 122.55(16) C7 C2 C1 119.16(15) C4 C3 C2 120.7(2) C4 C3 H3 119.7 C2 C3 H3 119.7 C3 C4 C5 121.1(2) C3 C4 H4 119.5 C5 C4 H4 119.5 C6 C5 C4 119.8(2) C6 C5 H5 120.1 C4 C5 H5 120.1 C5 C6 C7 121.0(2) C5 C6 H6 119.5 C7 C6 H6 119.5 C8 C7 C2 119.36(16) C8 C7 C6 121.33(17) C2 C7 C6 119.29(17) C9 C8 C7 121.08(17) C9 C8 H8 119.5 C7 C8 H8 119.5 C8 C9 C10 119.61(17) C8 C9 H9 120.2 C10 C9 H9 120.2 C1 C10 O1 121.58(14) C1 C10 C9 122.41(16) O1 C10 C9 115.94(15) C12 C11 C1 119.90(16) C12 C11 H11 120.1 C1 C11 H11 120.1 C11 C12 C13 121.26(15) C11 C12 H12 119.4 C13 C12 H12 119.4 O1 C13 C12 108.81(14) O1 C13 C22 110.06(12) C12 C13 C22 108.61(14) O1 C13 C14 103.87(12) C12 C13 C14 112.26(13) C22 C13 C14 113.09(14) C15 C14 C19 118.48(16) C15 C14 C13 119.32(16) C19 C14 C13 122.16(15) C16 C15 C14 121.95(18) C16 C15 H15 119.0 C14 C15 H15 119.0 C15 C16 C17 117.82(17) C15 C16 C20 120.5(2) C17 C16 C20 121.64(19) C18 C17 C16 122.32(17) C18 C17 H17 118.8 C16 C17 H17 118.8 C17 C18 C19 118.15(18) C17 C18 C21 120.99(18) C19 C18 C21 120.86(18) C14 C19 C18 121.28(16) C14 C19 H19 119.4 C18 C19 H19 119.4 C16 C20 H20A 109.5 C16 C20 H20B 109.5 H20A C20 H20B 109.5 C16 C20 H20C 109.5 H20A C20 H20C 109.5 H20B C20 H20C 109.5 C18 C21 H21A 109.5 C18 C21 H21B 109.5 H21A C21 H21B 109.5 C18 C21 H21C 109.5 H21A C21 H21C 109.5 H21B C21 H21C 109.5 C27 C22 C23 118.49(15) C27 C22 C13 122.79(14) C23 C22 C13 118.71(14) C24 C23 C22 121.49(16) C24 C23 H23 119.3 C22 C23 H23 119.3 C23 C24 C25 118.15(17) C23 C24 C29 120.50(18) C25 C24 C29 121.33(18) C26 C25 C24 122.22(17) C26 C25 H25 118.9 C24 C25 H25 118.9 C25 C26 C27 118.41(16) C25 C26 C28 121.10(17) C27 C26 C28 120.49(17) C22 C27 C26 121.23(16) C22 C27 H27 119.4 C26 C27 H27 119.4 C26 C28 H28A 109.5 C26 C28 H28B 109.5 H28A C28 H28B 109.5 C26 C28 H28C 109.5 H28A C28 H28C 109.5 H28B C28 H28C 109.5 C24 C29 H29A 109.5 C24 C29 H29B 109.5 H29A C29 H29B 109.5 C24 C29 H29C 109.5 H29A C29 H29C 109.5 H29B C29 H29C 109.5 loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance O1 C10 1.381(2) O1 C13 1.4607(19) C1 C10 1.375(2) C1 C2 1.439(2) C1 C11 1.450(2) C2 C3 1.413(2) C2 C7 1.416(2) C3 C4 1.369(3) C3 H3 0.9300 C4 C5 1.401(3) C4 H4 0.9300 C5 C6 1.356(3) C5 H5 0.9300 C6 C7 1.421(3) C6 H6 0.9300 C7 C8 1.405(3) C8 C9 1.366(2) C8 H8 0.9300 C9 C10 1.394(2) C9 H9 0.9300 C11 C12 1.321(2) C11 H11 0.9300 C12 C13 1.513(2) C12 H12 0.9300 C13 C22 1.526(2) C13 C14 1.528(2) C14 C15 1.387(2) C14 C19 1.389(2) C15 C16 1.385(3) C15 H15 0.9300 C16 C17 1.388(3) C16 C20 1.511(3) C17 C18 1.384(3) C17 H17 0.9300 C18 C19 1.393(2) C18 C21 1.502(3) C19 H19 0.9300 C20 H20A 0.9600 C20 H20B 0.9600 C20 H20C 0.9600 C21 H21A 0.9600 C21 H21B 0.9600 C21 H21C 0.9600 C22 C27 1.386(2) C22 C23 1.391(2) C23 C24 1.384(2) C23 H23 0.9300 C24 C25 1.386(3) C24 C29 1.516(3) C25 C26 1.374(3) C25 H25 0.9300 C26 C27 1.392(2) C26 C28 1.508(2) C27 H27 0.9300 C28 H28A 0.9600 C28 H28B 0.9600 C28 H28C 0.9600 C29 H29A 0.9600 C29 H29B 0.9600 C29 H29C 0.9600 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 C10 C1 C2 C3 175.23(16) C11 C1 C2 C3 -7.9(3) C10 C1 C2 C7 -2.7(2) C11 C1 C2 C7 174.23(16) C7 C2 C3 C4 -0.7(3) C1 C2 C3 C4 -178.63(18) C2 C3 C4 C5 0.4(3) C3 C4 C5 C6 0.3(3) C4 C5 C6 C7 -0.7(3) C3 C2 C7 C8 -178.05(16) C1 C2 C7 C8 -0.1(2) C3 C2 C7 C6 0.3(2) C1 C2 C7 C6 178.32(15) C5 C6 C7 C8 178.72(19) C5 C6 C7 C2 0.4(3) C2 C7 C8 C9 1.8(3) C6 C7 C8 C9 -176.53(17) C7 C8 C9 C10 -0.8(3) C2 C1 C10 O1 -179.47(14) C11 C1 C10 O1 3.4(2) C2 C1 C10 C9 3.8(3) C11 C1 C10 C9 -173.28(16) C13 O1 C10 C1 26.3(2) C13 O1 C10 C9 -156.81(15) C8 C9 C10 C1 -2.1(3) C8 C9 C10 O1 -179.03(15) C10 C1 C11 C12 -13.8(3) C2 C1 C11 C12 169.33(17) C1 C11 C12 C13 -5.8(3) C10 O1 C13 C12 -41.72(18) C10 O1 C13 C22 77.18(17) C10 O1 C13 C14 -161.47(13) C11 C12 C13 O1 32.4(2) C11 C12 C13 C22 -87.4(2) C11 C12 C13 C14 146.79(17) O1 C13 C14 C15 75.78(17) C12 C13 C14 C15 -41.6(2) C22 C13 C14 C15 -164.93(14) O1 C13 C14 C19 -101.94(17) C12 C13 C14 C19 140.68(16) C22 C13 C14 C19 17.4(2) C19 C14 C15 C16 -0.4(2) C13 C14 C15 C16 -178.19(15) C14 C15 C16 C17 -0.3(3) C14 C15 C16 C20 -179.60(17) C15 C16 C17 C18 1.0(3) C20 C16 C17 C18 -179.74(18) C16 C17 C18 C19 -0.9(3) C16 C17 C18 C21 178.66(18) C15 C14 C19 C18 0.5(2) C13 C14 C19 C18 178.23(15) C17 C18 C19 C14 0.1(3) C21 C18 C19 C14 -179.44(18) O1 C13 C22 C27 6.6(2) C12 C13 C22 C27 125.63(16) C14 C13 C22 C27 -109.06(17) O1 C13 C22 C23 -171.95(14) C12 C13 C22 C23 -52.9(2) C14 C13 C22 C23 72.38(19) C27 C22 C23 C24 -0.4(3) C13 C22 C23 C24 178.21(16) C22 C23 C24 C25 -0.9(3) C22 C23 C24 C29 -179.05(18) C23 C24 C25 C26 1.2(3) C29 C24 C25 C26 179.38(19) C24 C25 C26 C27 -0.2(3) C24 C25 C26 C28 -178.93(17) C23 C22 C27 C26 1.4(2) C13 C22 C27 C26 -177.12(15) C25 C26 C27 C22 -1.1(2) C28 C26 C27 C22 177.57(15)