#------------------------------------------------------------------------------ #$Date: 2016-02-18 17:37:37 +0200 (Thu, 18 Feb 2016) $ #$Revision: 176729 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/50/39/1503955.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_1503955 loop_ _publ_author_name 'Xiao, Jian' 'Loh, Teck-Peng' _publ_section_title ; Design, synthesis and optical resolution of new bifunctional ligand: 1,1'-dimethyl-octahydro-8,8'-biquinoline-7,7'-diol. ; _journal_issue 13 _journal_name_full 'Organic letters' _journal_page_first 2876 _journal_page_last 2879 _journal_paper_doi 10.1021/ol900790z _journal_volume 11 _journal_year 2009 _chemical_absolute_configuration ad _chemical_formula_moiety 'C31 H42 N2 O4' _chemical_formula_sum 'C31 H42 N2 O4' _chemical_formula_weight 506.67 _chemical_name_systematic ; ? ; _space_group_IT_number 19 _symmetry_cell_setting orthorhombic _symmetry_space_group_name_Hall 'P 2ac 2ab' _symmetry_space_group_name_H-M 'P 21 21 21' _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 90.00 _cell_angle_gamma 90.00 _cell_formula_units_Z 4 _cell_length_a 12.3403(4) _cell_length_b 14.6166(4) _cell_length_c 15.2085(5) _cell_measurement_reflns_used 9925 _cell_measurement_temperature 173(2) _cell_measurement_theta_max 26.19 _cell_measurement_theta_min 2.13 _cell_volume 2743.21(15) _computing_cell_refinement 'Bruker SMART' _computing_data_collection 'Bruker SMART' _computing_data_reduction 'Bruker SAINT' _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 173(2) _diffrn_measured_fraction_theta_full 1.000 _diffrn_measured_fraction_theta_max 1.000 _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 0.0418 _diffrn_reflns_av_sigmaI/netI 0.0308 _diffrn_reflns_limit_h_max 16 _diffrn_reflns_limit_h_min -16 _diffrn_reflns_limit_k_max 20 _diffrn_reflns_limit_k_min -14 _diffrn_reflns_limit_l_max 19 _diffrn_reflns_limit_l_min -20 _diffrn_reflns_number 33944 _diffrn_reflns_theta_full 29.25 _diffrn_reflns_theta_max 29.25 _diffrn_reflns_theta_min 1.93 _exptl_absorpt_coefficient_mu 0.080 _exptl_absorpt_correction_T_max 0.9809 _exptl_absorpt_correction_T_min 0.9763 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details sadabs _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.227 _exptl_crystal_density_method 'not measured' _exptl_crystal_description block _exptl_crystal_F_000 1096 _exptl_crystal_size_max 0.30 _exptl_crystal_size_mid 0.30 _exptl_crystal_size_min 0.24 _refine_diff_density_max 0.303 _refine_diff_density_min -0.325 _refine_diff_density_rms 0.107 _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack -10(10) _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.184 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 359 _refine_ls_number_reflns 4149 _refine_ls_number_restraints 7 _refine_ls_restrained_S_all 1.209 _refine_ls_R_factor_all 0.0596 _refine_ls_R_factor_gt 0.0421 _refine_ls_shift/su_max 0.001 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0781P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1068 _refine_ls_wR_factor_ref 0.1319 _reflns_number_gt 3475 _reflns_number_total 4149 _reflns_threshold_expression >2sigma(I) _cod_data_source_file ol900790z_si_002.cif _cod_data_source_block ltp102 _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic' according to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26. Automatic conversion script Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana ; _cod_original_sg_symbol_H-M P2(1)2(1)2(1) _cod_database_code 1503955 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x+1/2, -y, z+1/2' '-x, y+1/2, -z+1/2' 'x+1/2, -y+1/2, -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 C1 C 0.61613(18) 0.47958(14) 1.12402(14) 0.0233(4) Uani 1 1 d . . . C2 C 0.63301(19) 0.56599(15) 1.08917(17) 0.0294(5) Uani 1 1 d . . . H2 H 0.6447 0.6172 1.1265 0.035 Uiso 1 1 calc R . . C3 C 0.6325(2) 0.57585(15) 0.99852(18) 0.0328(6) Uani 1 1 d . . . H3 H 0.6403 0.6354 0.9743 0.039 Uiso 1 1 calc R . . C4 C 0.6210(2) 0.50268(16) 0.94221(16) 0.0283(5) Uani 1 1 d . A . C5 C 0.6288(3) 0.5159(2) 0.84388(18) 0.0479(7) Uani 1 1 d D . . H5C H 0.7033 0.5027 0.8234 0.057 Uiso 0.589(9) 1 calc PR A 2 H5D H 0.6108 0.5799 0.8282 0.057 Uiso 0.589(9) 1 calc PR A 2 H5A H 0.5669 0.5540 0.8245 0.057 Uiso 0.411(9) 1 d PR A 1 H5B H 0.6959 0.5506 0.8313 0.057 Uiso 0.411(9) 1 d PR A 1 C6 C 0.6311(6) 0.4310(4) 0.7900(4) 0.041(2) Uani 0.411(9) 1 d PD A 1 H6A H 0.7039 0.4026 0.7910 0.049 Uiso 0.411(9) 1 calc PR A 1 H6B H 0.6107 0.4440 0.7283 0.049 Uiso 0.411(9) 1 calc PR A 1 C7 C 0.5476(8) 0.3695(8) 0.8342(7) 0.031(2) Uani 0.411(9) 1 d PD A 1 H7A H 0.4788 0.4030 0.8435 0.037 Uiso 0.411(9) 1 calc PR A 1 H7B H 0.5327 0.3151 0.7973 0.037 Uiso 0.411(9) 1 calc PR A 1 C6A C 0.5458(5) 0.4479(3) 0.7992(3) 0.0497(18) Uani 0.589(9) 1 d PD A 2 H6A1 H 0.4713 0.4615 0.8195 0.060 Uiso 0.589(9) 1 calc PR A 2 H6A2 H 0.5481 0.4551 0.7345 0.060 Uiso 0.589(9) 1 calc PR A 2 C7A C 0.5764(8) 0.3507(5) 0.8242(5) 0.0372(19) Uani 0.589(9) 1 d PD A 2 H7A1 H 0.5176 0.3086 0.8062 0.045 Uiso 0.589(9) 1 calc PR A 2 H7A2 H 0.6430 0.3328 0.7922 0.045 Uiso 0.589(9) 1 calc PR A 2 C8 C 0.6097(2) 0.24656(15) 0.94022(16) 0.0294(5) Uani 1 1 d . . . H8A H 0.6518 0.2413 0.9947 0.044 Uiso 1 1 calc R . . H8B H 0.6487 0.2161 0.8923 0.044 Uiso 1 1 calc R . . H8C H 0.5389 0.2175 0.9482 0.044 Uiso 1 1 calc R . . C9 C 0.60242(17) 0.41454(14) 0.97698(14) 0.0224(4) Uani 1 1 d . . . C10 C 0.59307(16) 0.40425(14) 1.06987(14) 0.0199(4) Uani 1 1 d . A . C11 C 0.54898(17) 0.31883(13) 1.11122(14) 0.0187(4) Uani 1 1 d . . . C12 C 0.60386(16) 0.26622(14) 1.17545(14) 0.0199(4) Uani 1 1 d . A . C13 C 0.79520(19) 0.30027(18) 1.14089(16) 0.0306(5) Uani 1 1 d . A . H13A H 0.8172 0.2375 1.1272 0.046 Uiso 1 1 calc R . . H13B H 0.8573 0.3341 1.1645 0.046 Uiso 1 1 calc R . . H13C H 0.7694 0.3304 1.0873 0.046 Uiso 1 1 calc R . . C14 C 0.7442(2) 0.25202(17) 1.28785(15) 0.0295(5) Uani 1 1 d . A . H14A H 0.7005 0.2737 1.3383 0.035 Uiso 1 1 calc R . . H14B H 0.8208 0.2683 1.2992 0.035 Uiso 1 1 calc R . . C15 C 0.7343(2) 0.14899(17) 1.28071(17) 0.0326(5) Uani 1 1 d . . . H15A H 0.7675 0.1193 1.3326 0.039 Uiso 1 1 calc R . . H15B H 0.7719 0.1269 1.2273 0.039 Uiso 1 1 calc R . . C16 C 0.6142(2) 0.12614(16) 1.27591(16) 0.0305(5) Uani 1 1 d . A . H16A H 0.6053 0.0613 1.2584 0.037 Uiso 1 1 calc R . . H16B H 0.5813 0.1340 1.3348 0.037 Uiso 1 1 calc R . . C17 C 0.55588(18) 0.18674(14) 1.21064(14) 0.0234(4) Uani 1 1 d . . . C18 C 0.45298(18) 0.16182(15) 1.18287(16) 0.0270(5) Uani 1 1 d . A . H18 H 0.4205 0.1083 1.2066 0.032 Uiso 1 1 calc R . . C19 C 0.39667(18) 0.21258(15) 1.12198(15) 0.0260(5) Uani 1 1 d . . . H19 H 0.3260 0.1950 1.1039 0.031 Uiso 1 1 calc R A . C20 C 0.44580(17) 0.29014(14) 1.08760(13) 0.0206(4) Uani 1 1 d . A . C21 C 0.33581(17) 0.41343(14) 1.04357(14) 0.0211(4) Uani 1 1 d . A . C22 C 0.22370(19) 0.52708(15) 0.97914(15) 0.0260(5) Uani 1 1 d . A . H22 H 0.2491 0.5664 1.0288 0.031 Uiso 1 1 calc R . . C23 C 0.1109(2) 0.49148(18) 0.99881(19) 0.0365(6) Uani 1 1 d . . . H23A H 0.1111 0.4616 1.0572 0.044 Uiso 1 1 calc R . . H23B H 0.0914 0.4446 0.9545 0.044 Uiso 1 1 calc R . . C24 C 0.0253(2) 0.5669(2) 0.9981(2) 0.0464(7) Uani 1 1 d . . . H24 H 0.0437 0.6113 1.0458 0.056 Uiso 1 1 calc R . . C25 C -0.0862(3) 0.5288(3) 1.0172(3) 0.0735(12) Uani 1 1 d . . . H25A H -0.1388 0.5790 1.0193 0.110 Uiso 1 1 calc R . . H25B H -0.0853 0.4970 1.0739 0.110 Uiso 1 1 calc R . . H25C H -0.1068 0.4858 0.9707 0.110 Uiso 1 1 calc R . . C26 C 0.0305(3) 0.6176(2) 0.9112(2) 0.0532(8) Uani 1 1 d . . . H26A H 0.0099 0.5754 0.8631 0.064 Uiso 1 1 calc R . . H26B H -0.0224 0.6685 0.9119 0.064 Uiso 1 1 calc R . . C27 C 0.1426(3) 0.6555(2) 0.8933(2) 0.0483(7) Uani 1 1 d . . . H27A H 0.1605 0.7017 0.9386 0.058 Uiso 1 1 calc R . . H27B H 0.1427 0.6865 0.8354 0.058 Uiso 1 1 calc R . . C28 C 0.2302(2) 0.58032(16) 0.89360(17) 0.0317(5) Uani 1 1 d . . . H28 H 0.2118 0.5367 0.8452 0.038 Uiso 1 1 calc R . . C29 C 0.3460(3) 0.6161(2) 0.8752(2) 0.0455(7) Uani 1 1 d . . . H29 H 0.3975 0.5658 0.8907 0.055 Uiso 1 1 calc R . . C30 C 0.3770(3) 0.6991(2) 0.9304(3) 0.0800(12) Uani 1 1 d . . . H30A H 0.3339 0.7520 0.9119 0.120 Uiso 1 1 calc R . . H30B H 0.4542 0.7125 0.9222 0.120 Uiso 1 1 calc R . . H30C H 0.3629 0.6861 0.9926 0.120 Uiso 1 1 calc R . . C31 C 0.3594(4) 0.6351(3) 0.7769(2) 0.0833(14) Uani 1 1 d . . . H31A H 0.3495 0.5782 0.7439 0.125 Uiso 1 1 calc R . . H31B H 0.4322 0.6594 0.7659 0.125 Uiso 1 1 calc R . . H31C H 0.3052 0.6800 0.7581 0.125 Uiso 1 1 calc R . . N1 N 0.59484(19) 0.34189(13) 0.91886(12) 0.0323(5) Uani 1 1 d D A . N2 N 0.70718(14) 0.29865(13) 1.20689(11) 0.0222(4) Uani 1 1 d . . . O1 O 0.61830(15) 0.47071(11) 1.21362(10) 0.0298(4) Uani 1 1 d . . . H1 H 0.6422 0.4187 1.2270 0.045 Uiso 1 1 calc R . . O2 O 0.39012(12) 0.33673(10) 1.02034(10) 0.0231(3) Uani 1 1 d . . . O3 O 0.32546(14) 0.44214(12) 1.11662(11) 0.0325(4) Uani 1 1 d . . . O4 O 0.29611(13) 0.44822(11) 0.96947(10) 0.0261(3) Uani 1 1 d . . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 C1 0.0226(10) 0.0210(10) 0.0263(11) -0.0033(8) 0.0012(8) 0.0004(8) C2 0.0306(11) 0.0182(10) 0.0395(13) -0.0046(9) 0.0026(10) -0.0022(9) C3 0.0340(12) 0.0184(11) 0.0459(15) 0.0097(10) 0.0060(11) -0.0047(9) C4 0.0287(11) 0.0265(11) 0.0297(12) 0.0072(9) 0.0058(9) -0.0028(9) C5 0.0689(19) 0.0394(15) 0.0352(15) 0.0158(13) 0.0146(14) -0.0026(14) C6 0.044(4) 0.055(4) 0.022(3) 0.008(3) 0.004(3) 0.000(3) C7 0.041(5) 0.032(5) 0.020(4) 0.001(3) 0.001(3) 0.004(4) C6A 0.086(5) 0.036(3) 0.027(2) 0.004(2) -0.005(3) 0.005(3) C7A 0.052(5) 0.041(4) 0.019(3) -0.002(3) -0.001(3) 0.006(3) C8 0.0398(12) 0.0218(11) 0.0266(12) -0.0059(9) 0.0032(10) 0.0002(10) C9 0.0240(10) 0.0193(10) 0.0239(10) 0.0014(8) 0.0028(8) 0.0006(8) C10 0.0223(10) 0.0146(9) 0.0229(10) 0.0009(8) 0.0012(8) 0.0001(8) C11 0.0235(9) 0.0153(9) 0.0173(9) -0.0009(8) 0.0023(8) 0.0009(7) C12 0.0222(9) 0.0187(9) 0.0189(10) -0.0015(8) 0.0022(8) 0.0019(8) C13 0.0243(10) 0.0369(13) 0.0304(12) -0.0001(10) 0.0021(9) 0.0011(10) C14 0.0325(11) 0.0325(12) 0.0235(11) 0.0021(10) -0.0069(9) 0.0022(10) C15 0.0351(12) 0.0317(12) 0.0308(13) 0.0099(11) -0.0043(10) 0.0038(10) C16 0.0348(12) 0.0278(12) 0.0290(12) 0.0110(10) -0.0016(10) 0.0032(10) C17 0.0283(10) 0.0205(10) 0.0216(10) 0.0033(8) 0.0014(9) 0.0029(8) C18 0.0286(11) 0.0226(11) 0.0297(12) 0.0075(9) 0.0041(9) -0.0034(9) C19 0.0252(10) 0.0247(11) 0.0281(11) 0.0021(9) 0.0002(9) -0.0020(9) C20 0.0246(9) 0.0178(9) 0.0195(10) 0.0013(8) 0.0009(8) 0.0035(8) C21 0.0223(9) 0.0175(9) 0.0235(11) 0.0018(8) -0.0027(8) -0.0008(8) C22 0.0317(11) 0.0178(10) 0.0286(11) 0.0000(9) -0.0047(9) 0.0062(8) C23 0.0338(12) 0.0298(12) 0.0459(15) 0.0002(11) -0.0006(11) 0.0031(10) C24 0.0350(13) 0.0431(16) 0.061(2) -0.0133(14) -0.0078(13) 0.0117(12) C25 0.0386(17) 0.078(3) 0.104(3) -0.019(2) 0.0092(18) 0.0093(17) C26 0.0467(16) 0.0465(17) 0.066(2) -0.0078(16) -0.0222(15) 0.0209(14) C27 0.0610(19) 0.0325(14) 0.0515(17) 0.0095(13) -0.0175(15) 0.0134(13) C28 0.0393(13) 0.0247(11) 0.0312(12) 0.0059(10) -0.0108(11) 0.0015(10) C29 0.0496(17) 0.0416(16) 0.0454(16) 0.0205(13) -0.0077(13) -0.0057(13) C30 0.070(2) 0.053(2) 0.118(3) 0.012(2) -0.024(2) -0.027(2) C31 0.077(3) 0.114(4) 0.060(2) 0.049(2) 0.002(2) -0.009(2) N1 0.0556(13) 0.0216(9) 0.0195(9) 0.0015(8) -0.0006(9) -0.0014(9) N2 0.0229(8) 0.0232(9) 0.0207(9) -0.0002(7) -0.0004(7) 0.0008(7) O1 0.0419(9) 0.0229(8) 0.0245(8) -0.0055(6) -0.0023(7) 0.0037(7) O2 0.0271(7) 0.0200(7) 0.0221(7) 0.0006(6) -0.0048(6) 0.0028(6) O3 0.0417(10) 0.0307(9) 0.0252(8) -0.0035(7) -0.0033(7) 0.0084(7) O4 0.0340(8) 0.0213(8) 0.0230(8) 0.0015(6) -0.0031(6) 0.0060(6) 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 0.0000 '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' N N 0.0061 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O 0.0106 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 O1 C1 C2 117.66(19) O1 C1 C10 120.89(19) C2 C1 C10 121.4(2) C1 C2 C3 118.3(2) C4 C3 C2 122.6(2) C3 C4 C9 119.5(2) C3 C4 C5 120.6(2) C9 C4 C5 119.9(2) C6 C5 C4 116.1(3) C6 C5 C6A 41.5(3) C4 C5 C6A 107.7(3) C5 C6 C7 103.7(6) N1 C7 C6 106.2(7) C7A C6A C5 108.6(5) N1 C7A C6A 111.5(5) N1 C9 C4 118.1(2) N1 C9 C10 123.11(19) C4 C9 C10 118.74(19) C1 C10 C9 118.83(19) C1 C10 C11 118.70(19) C9 C10 C11 122.19(18) C20 C11 C12 116.96(19) C20 C11 C10 118.40(18) C12 C11 C10 124.60(19) C17 C12 C11 120.58(19) C17 C12 N2 121.10(19) C11 C12 N2 118.25(19) N2 C14 C15 111.9(2) C14 C15 C16 107.5(2) C17 C16 C15 111.51(19) C18 C17 C12 119.0(2) C18 C17 C16 118.8(2) C12 C17 C16 122.1(2) C19 C18 C17 121.7(2) C18 C19 C20 118.3(2) C19 C20 C11 123.4(2) C19 C20 O2 117.10(19) C11 C20 O2 119.32(18) O3 C21 O4 127.9(2) O3 C21 O2 125.94(19) O4 C21 O2 106.14(18) O4 C22 C23 108.04(18) O4 C22 C28 106.54(19) C23 C22 C28 113.2(2) C22 C23 C24 112.7(2) C25 C24 C26 112.7(3) C25 C24 C23 111.3(3) C26 C24 C23 109.2(2) C27 C26 C24 112.0(2) C26 C27 C28 112.3(2) C22 C28 C27 109.3(2) C22 C28 C29 112.2(2) C27 C28 C29 114.0(2) C30 C29 C31 111.5(3) C30 C29 C28 113.7(3) C31 C29 C28 109.8(3) C9 N1 C8 126.04(19) C9 N1 C7A 124.8(3) C8 N1 C7A 109.1(3) C9 N1 C7 112.1(5) C8 N1 C7 120.8(5) C7A N1 C7 18.6(4) C12 N2 C13 115.44(17) C12 N2 C14 113.44(18) C13 N2 C14 110.19(18) C21 O2 C20 116.92(16) C21 O4 C22 116.12(17) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance C1 O1 1.369(3) C1 C2 1.386(3) C1 C10 1.404(3) C2 C3 1.386(4) C3 C4 1.377(3) C4 C9 1.411(3) C4 C5 1.511(3) C5 C6 1.487(6) C5 C6A 1.581(5) C6 C7 1.524(7) C7 N1 1.470(11) C6A C7A 1.518(6) C7A N1 1.464(8) C8 N1 1.442(3) C9 N1 1.385(3) C9 C10 1.425(3) C10 C11 1.500(3) C11 C20 1.388(3) C11 C12 1.416(3) C12 C17 1.410(3) C12 N2 1.442(3) C13 N2 1.479(3) C14 N2 1.480(3) C14 C15 1.515(4) C15 C16 1.521(3) C16 C17 1.513(3) C17 C18 1.387(3) C18 C19 1.375(3) C19 C20 1.388(3) C20 O2 1.408(3) C21 O3 1.195(3) C21 O4 1.330(3) C21 O2 1.353(3) C22 O4 1.466(3) C22 C23 1.516(4) C22 C28 1.518(3) C23 C24 1.527(4) C24 C25 1.512(5) C24 C26 1.517(5) C26 C27 1.515(5) C27 C28 1.542(4) C28 C29 1.547(4) C29 C30 1.524(5) C29 C31 1.529(4)