#------------------------------------------------------------------------------ #$Date: 2012-03-31 02:22:43 +0100 (Sat, 31 Mar 2012) $ #$Revision: 50609 $ #$URL: svn://www.crystallography.net/cod/cif/4/07/56/4075668.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_4075668 loop_ _publ_author_name 'Boubekeur, Le\"ila' 'Ricard, Louis' 'M\'ezailles, Nicolas' 'Le Floch, Pascal' _publ_section_title ; Synthesis of New Mixed Phosphine\sim Iminophosphorane Bidentate Ligands and Their Coordination to Group 10 Metal Centers ; _journal_issue 6 _journal_name_full Organometallics _journal_page_first 1065 _journal_volume 24 _journal_year 2005 _chemical_formula_sum 'C37 H39 Br2 N Ni O2 P2' _chemical_formula_weight 810.16 _chemical_name_systematic ; ? ; _space_group_IT_number 14 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall '-P 2ybc' _symmetry_space_group_name_H-M 'P 1 21/c 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 95.4000(10) _cell_angle_gamma 90.00 _cell_formula_units_Z 4 _cell_length_a 19.9970(10) _cell_length_b 9.7900(10) _cell_length_c 17.6700(10) _cell_measurement_reflns_used 251 _cell_measurement_temperature 150.0(1) _cell_measurement_theta_max 20.0 _cell_measurement_theta_min 3.0 _cell_volume 3443.9(4) _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 150.0(1) _diffrn_measured_fraction_theta_full 0.997 _diffrn_measured_fraction_theta_max 0.997 _diffrn_measurement_device_type KappaCCD _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 0.71069 _diffrn_reflns_av_R_equivalents 0.0264 _diffrn_reflns_av_sigmaI/netI 0.0517 _diffrn_reflns_limit_h_max 25 _diffrn_reflns_limit_h_min -25 _diffrn_reflns_limit_k_max 12 _diffrn_reflns_limit_k_min -10 _diffrn_reflns_limit_l_max 22 _diffrn_reflns_limit_l_min -22 _diffrn_reflns_number 14102 _diffrn_reflns_theta_full 27.47 _diffrn_reflns_theta_max 27.47 _diffrn_reflns_theta_min 2.92 _exptl_absorpt_coefficient_mu 3.011 _exptl_absorpt_correction_T_max 0.9151 _exptl_absorpt_correction_T_min 0.5571 _exptl_absorpt_correction_type multi-scan _exptl_crystal_colour blue _exptl_crystal_density_diffrn 1.563 _exptl_crystal_density_method 'not measured' _exptl_crystal_description plate _exptl_crystal_F_000 1648 _exptl_crystal_size_max 0.22 _exptl_crystal_size_mid 0.18 _exptl_crystal_size_min 0.03 _refine_diff_density_max 0.907 _refine_diff_density_min -0.669 _refine_diff_density_rms 0.079 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.039 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 407 _refine_ls_number_reflns 7871 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.039 _refine_ls_R_factor_all 0.0542 _refine_ls_R_factor_gt 0.0350 _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^)+(0.0425P)^2^+0.1060P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.0843 _refine_ls_wR_factor_ref 0.0903 _reflns_number_gt 5916 _reflns_number_total 7871 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file om0490684si20041129_110219.cif _[local]_cod_data_source_block niiminop _[local]_cod_cif_authors_sg_H-M 'P21/c ' _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_values 1715 2011-07-08 13:25:40Z adriana ; _cod_database_code 4075668 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z+1/2' '-x, -y, -z' 'x, -y-1/2, z-1/2' 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 Br1 Br 0.155768(15) 0.09552(3) 0.305558(16) 0.03189(9) Uani 1 1 d . Br2 Br 0.352937(16) 0.04580(3) 0.404625(17) 0.03591(9) Uani 1 1 d . Ni1 Ni 0.259717(18) -0.02295(3) 0.322078(18) 0.02259(9) Uani 1 1 d . P1 P 0.20898(3) -0.31774(6) 0.27961(4) 0.01891(15) Uani 1 1 d . P2 P 0.26624(4) -0.08676(6) 0.19766(4) 0.02074(15) Uani 1 1 d . O1 O 0.01825(11) -0.11950(19) 0.58355(11) 0.0366(5) Uani 1 1 d . N1 N 0.23796(11) -0.21572(19) 0.34513(11) 0.0208(5) Uani 1 1 d . C1 C 0.19943(14) -0.2162(2) 0.19375(13) 0.0214(6) Uani 1 1 d . H1A H 0.1549 -0.1710 0.1890 0.026 Uiso 1 1 calc R H1B H 0.2022 -0.2757 0.1488 0.026 Uiso 1 1 calc R C2 C 0.24332(15) -0.2624(3) 0.42565(14) 0.0260(6) Uani 1 1 d . H2A H 0.2849 -0.2244 0.4524 0.031 Uiso 1 1 calc R H2B H 0.2473 -0.3632 0.4267 0.031 Uiso 1 1 calc R C3 C 0.18402(14) -0.2208(2) 0.46848(14) 0.0234(6) Uani 1 1 d . C4 C 0.13391(15) -0.3137(3) 0.48135(14) 0.0275(6) Uani 1 1 d . H4 H 0.1371 -0.4046 0.4632 0.033 Uiso 1 1 calc R C5 C 0.07972(15) -0.2780(3) 0.51969(14) 0.0292(7) Uani 1 1 d . H5 H 0.0460 -0.3436 0.5273 0.035 Uiso 1 1 calc R C6 C 0.07434(15) -0.1455(3) 0.54728(14) 0.0262(6) Uani 1 1 d . C7 C 0.12368(15) -0.0508(3) 0.53532(15) 0.0256(6) Uani 1 1 d . H7 H 0.1204 0.0399 0.5537 0.031 Uiso 1 1 calc R C8 C 0.17823(15) -0.0888(3) 0.49621(14) 0.0264(6) Uani 1 1 d . H8 H 0.2120 -0.0234 0.4884 0.032 Uiso 1 1 calc R C9 C 0.01258(17) 0.0112(3) 0.61737(17) 0.0372(7) Uani 1 1 d . H9A H 0.0499 0.0245 0.6568 0.056 Uiso 1 1 calc R H9B H -0.0301 0.0170 0.6403 0.056 Uiso 1 1 calc R H9C H 0.0140 0.0821 0.5784 0.056 Uiso 1 1 calc R C10 C 0.26246(13) -0.4605(2) 0.26260(14) 0.0203(5) Uani 1 1 d . C11 C 0.24586(15) -0.5444(3) 0.19961(16) 0.0280(6) Uani 1 1 d . H11 H 0.2069 -0.5256 0.1662 0.034 Uiso 1 1 calc R C12 C 0.28631(16) -0.6550(3) 0.18597(17) 0.0334(7) Uani 1 1 d . H12 H 0.2762 -0.7094 0.1419 0.040 Uiso 1 1 calc R C13 C 0.34119(16) -0.6864(3) 0.23612(17) 0.0358(7) Uani 1 1 d . H13 H 0.3675 -0.7649 0.2279 0.043 Uiso 1 1 calc R C14 C 0.35779(16) -0.6034(3) 0.29834(18) 0.0371(7) Uani 1 1 d . H14 H 0.3958 -0.6243 0.3327 0.045 Uiso 1 1 calc R C15 C 0.31886(15) -0.4894(3) 0.31051(16) 0.0296(6) Uani 1 1 d . H15 H 0.3313 -0.4309 0.3524 0.036 Uiso 1 1 calc R C16 C 0.12833(14) -0.3918(2) 0.29373(14) 0.0206(5) Uani 1 1 d . C17 C 0.07242(14) -0.3057(3) 0.29265(14) 0.0253(6) Uani 1 1 d . H17 H 0.0767 -0.2118 0.2806 0.030 Uiso 1 1 calc R C18 C 0.01099(15) -0.3568(3) 0.30900(15) 0.0290(6) Uani 1 1 d . H18 H -0.0273 -0.2990 0.3065 0.035 Uiso 1 1 calc R C19 C 0.00559(15) -0.4937(3) 0.32916(16) 0.0293(6) Uani 1 1 d . H19 H -0.0365 -0.5286 0.3412 0.035 Uiso 1 1 calc R C20 C 0.06043(14) -0.5790(3) 0.33180(15) 0.0274(6) Uani 1 1 d . H20 H 0.0564 -0.6720 0.3461 0.033 Uiso 1 1 calc R C21 C 0.12168(14) -0.5285(2) 0.31353(14) 0.0242(6) Uani 1 1 d . H21 H 0.1594 -0.5876 0.3145 0.029 Uiso 1 1 calc R C22 C 0.24269(15) 0.0180(2) 0.11393(14) 0.0256(6) Uani 1 1 d . C23 C 0.28919(18) 0.0471(3) 0.06162(15) 0.0341(7) Uani 1 1 d . H23 H 0.3329 0.0084 0.0676 0.041 Uiso 1 1 calc R C24 C 0.2704(2) 0.1336(3) 0.00072(17) 0.0464(10) Uani 1 1 d . H24 H 0.3018 0.1541 -0.0349 0.056 Uiso 1 1 calc R C25 C 0.2070(2) 0.1898(3) -0.00866(17) 0.0508(10) Uani 1 1 d . H25 H 0.1948 0.2479 -0.0508 0.061 Uiso 1 1 calc R C26 C 0.16122(19) 0.1621(3) 0.04289(18) 0.0438(9) Uani 1 1 d . H26 H 0.1175 0.2010 0.0365 0.053 Uiso 1 1 calc R C27 C 0.17940(16) 0.0766(3) 0.10458(16) 0.0314(7) Uani 1 1 d . H27 H 0.1481 0.0585 0.1405 0.038 Uiso 1 1 calc R C28 C 0.34126(13) -0.1795(2) 0.17906(14) 0.0231(6) Uani 1 1 d . C29 C 0.40044(15) -0.1541(3) 0.22486(16) 0.0318(7) Uani 1 1 d . H29 H 0.4013 -0.0875 0.2640 0.038 Uiso 1 1 calc R C30 C 0.45841(16) -0.2266(3) 0.21308(17) 0.0406(8) Uani 1 1 d . H30 H 0.4988 -0.2093 0.2443 0.049 Uiso 1 1 calc R C31 C 0.45744(17) -0.3234(3) 0.15639(18) 0.0406(8) Uani 1 1 d . H31 H 0.4971 -0.3728 0.1487 0.049 Uiso 1 1 calc R C32 C 0.39895(17) -0.3488(3) 0.11084(18) 0.0391(8) Uani 1 1 d . H32 H 0.3985 -0.4154 0.0717 0.047 Uiso 1 1 calc R C33 C 0.34092(15) -0.2775(3) 0.12203(15) 0.0299(6) Uani 1 1 d . H33 H 0.3007 -0.2956 0.0906 0.036 Uiso 1 1 calc R O2 O 0.44162(15) -0.8481(3) 0.12223(18) 0.0811(9) Uani 1 1 d . C34 C 0.4388(3) -0.7234(5) 0.0807(3) 0.114(2) Uani 1 1 d . H34A H 0.3955 -0.7177 0.0487 0.137 Uiso 1 1 calc R H34B H 0.4412 -0.6455 0.1165 0.137 Uiso 1 1 calc R C35 C 0.4904(2) -0.7153(5) 0.0357(3) 0.0894(16) Uani 1 1 d . H35A H 0.5081 -0.6208 0.0356 0.107 Uiso 1 1 calc R H35B H 0.4747 -0.7410 -0.0172 0.107 Uiso 1 1 calc R C36 C 0.54426(19) -0.8119(4) 0.0675(2) 0.0612(10) Uani 1 1 d . H36A H 0.5785 -0.7646 0.1022 0.073 Uiso 1 1 calc R H36B H 0.5665 -0.8575 0.0267 0.073 Uiso 1 1 calc R C37 C 0.5038(2) -0.9126(3) 0.1102(2) 0.0598(11) Uani 1 1 d . H37A H 0.4955 -0.9972 0.0801 0.072 Uiso 1 1 calc R H37B H 0.5286 -0.9368 0.1595 0.072 Uiso 1 1 calc R 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 Br1 0.03218(18) 0.02849(16) 0.03456(17) -0.00370(11) 0.00077(13) 0.00768(12) Br2 0.03508(19) 0.03791(17) 0.03281(17) -0.00494(12) -0.00694(13) -0.00673(13) Ni1 0.0266(2) 0.01999(17) 0.02091(18) -0.00196(12) 0.00095(15) -0.00110(14) P1 0.0211(4) 0.0174(3) 0.0182(3) 0.0005(2) 0.0012(3) 0.0002(3) P2 0.0239(4) 0.0202(3) 0.0181(3) 0.0010(2) 0.0020(3) -0.0018(3) O1 0.0366(13) 0.0378(11) 0.0370(12) -0.0040(9) 0.0123(10) 0.0002(9) N1 0.0266(13) 0.0194(10) 0.0165(11) 0.0000(8) 0.0018(9) 0.0006(9) C1 0.0246(15) 0.0203(12) 0.0192(13) 0.0016(9) 0.0020(11) 0.0024(11) C2 0.0333(17) 0.0256(13) 0.0190(13) 0.0010(10) 0.0018(12) 0.0046(12) C3 0.0304(16) 0.0238(13) 0.0159(13) 0.0021(9) 0.0010(11) 0.0028(11) C4 0.0428(19) 0.0212(13) 0.0186(13) 0.0004(10) 0.0026(13) -0.0002(12) C5 0.0375(19) 0.0271(14) 0.0231(14) 0.0031(11) 0.0029(13) -0.0054(12) C6 0.0297(17) 0.0316(15) 0.0173(13) 0.0011(10) 0.0024(12) 0.0038(12) C7 0.0322(17) 0.0218(13) 0.0228(14) 0.0003(10) 0.0021(12) 0.0043(12) C8 0.0323(17) 0.0253(14) 0.0218(14) 0.0011(10) 0.0032(12) -0.0032(12) C9 0.039(2) 0.0432(17) 0.0303(16) -0.0048(13) 0.0074(14) 0.0085(14) C10 0.0203(15) 0.0187(12) 0.0225(14) 0.0012(9) 0.0058(11) -0.0007(10) C11 0.0283(17) 0.0239(14) 0.0313(16) -0.0046(11) 0.0001(13) 0.0003(12) C12 0.0367(19) 0.0255(14) 0.0391(17) -0.0107(12) 0.0104(14) -0.0031(13) C13 0.0334(19) 0.0262(15) 0.0493(19) -0.0024(13) 0.0109(15) 0.0069(13) C14 0.0274(18) 0.0392(17) 0.0439(19) -0.0016(13) -0.0009(14) 0.0093(14) C15 0.0271(17) 0.0309(15) 0.0305(15) -0.0037(11) 0.0008(13) 0.0019(12) C16 0.0219(15) 0.0225(13) 0.0176(13) 0.0006(9) 0.0027(11) 0.0003(11) C17 0.0280(16) 0.0225(13) 0.0253(14) 0.0004(10) 0.0019(12) -0.0004(12) C18 0.0254(16) 0.0301(15) 0.0324(16) -0.0007(12) 0.0063(13) 0.0034(12) C19 0.0248(16) 0.0337(15) 0.0305(16) -0.0002(11) 0.0075(13) -0.0060(12) C20 0.0303(17) 0.0226(13) 0.0299(15) -0.0003(11) 0.0057(13) -0.0056(12) C21 0.0246(16) 0.0247(13) 0.0232(14) -0.0013(10) 0.0026(12) -0.0004(11) C22 0.0415(19) 0.0155(12) 0.0192(13) -0.0023(9) -0.0001(12) -0.0035(12) C23 0.057(2) 0.0228(14) 0.0249(15) -0.0015(11) 0.0132(15) -0.0026(13) C24 0.093(3) 0.0225(15) 0.0251(16) -0.0014(12) 0.0154(17) -0.0100(17) C25 0.103(3) 0.0212(15) 0.0248(17) 0.0026(12) -0.0133(19) -0.0055(19) C26 0.064(2) 0.0222(14) 0.0406(19) 0.0025(13) -0.0207(18) 0.0017(15) C27 0.0390(19) 0.0228(14) 0.0304(16) 0.0025(11) -0.0072(14) -0.0072(13) C28 0.0238(15) 0.0248(13) 0.0213(14) 0.0039(10) 0.0059(12) -0.0038(11) C29 0.0285(17) 0.0394(16) 0.0279(15) -0.0014(12) 0.0043(13) -0.0025(13) C30 0.0243(18) 0.058(2) 0.0400(19) 0.0023(15) 0.0050(14) 0.0016(15) C31 0.0342(19) 0.0454(18) 0.0441(19) 0.0040(14) 0.0127(16) 0.0095(15) C32 0.040(2) 0.0384(17) 0.0404(18) -0.0055(13) 0.0138(16) 0.0046(15) C33 0.0301(17) 0.0334(15) 0.0268(15) -0.0028(11) 0.0061(13) -0.0018(13) O2 0.0565(19) 0.0705(18) 0.118(3) 0.0471(17) 0.0172(18) 0.0060(15) C34 0.074(4) 0.118(4) 0.158(5) 0.102(4) 0.048(4) 0.038(3) C35 0.055(3) 0.098(3) 0.118(4) 0.067(3) 0.026(3) 0.025(3) C36 0.047(3) 0.070(3) 0.066(3) 0.007(2) 0.005(2) 0.015(2) C37 0.067(3) 0.0350(19) 0.076(3) 0.0044(17) -0.002(2) 0.0092(18) 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' Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Ni Ni 0.3393 1.1124 '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' P P 0.1023 0.0942 '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 N1 Ni1 P2 88.35(6) N1 Ni1 Br2 108.68(6) P2 Ni1 Br2 123.83(2) N1 Ni1 Br1 106.44(7) P2 Ni1 Br1 98.21(2) Br2 Ni1 Br1 124.714(17) N1 P1 C10 115.19(12) N1 P1 C16 114.76(11) C10 P1 C16 105.26(11) N1 P1 C1 105.49(11) C10 P1 C1 107.68(12) C16 P1 C1 108.13(12) C28 P2 C22 106.85(12) C28 P2 C1 105.03(11) C22 P2 C1 103.04(12) C28 P2 Ni1 115.61(9) C22 P2 Ni1 126.05(8) C1 P2 Ni1 96.70(8) C6 O1 C9 117.8(2) C2 N1 P1 119.33(17) C2 N1 Ni1 119.33(15) P1 N1 Ni1 121.13(11) P1 C1 P2 109.17(13) N1 C2 C3 113.8(2) C4 C3 C8 117.8(3) C4 C3 C2 121.0(2) C8 C3 C2 121.2(2) C5 C4 C3 121.9(2) C4 C5 C6 120.0(3) O1 C6 C7 125.1(2) O1 C6 C5 115.6(2) C7 C6 C5 119.4(3) C6 C7 C8 119.9(2) C3 C8 C7 121.2(3) C15 C10 C11 119.3(2) C15 C10 P1 121.49(19) C11 C10 P1 119.2(2) C12 C11 C10 119.9(3) C13 C12 C11 120.3(3) C12 C13 C14 119.8(3) C13 C14 C15 120.0(3) C10 C15 C14 120.6(3) C21 C16 C17 119.2(2) C21 C16 P1 121.9(2) C17 C16 P1 118.62(18) C18 C17 C16 120.3(2) C17 C18 C19 119.6(3) C20 C19 C18 120.8(3) C19 C20 C21 119.6(2) C20 C21 C16 120.6(3) C27 C22 C23 119.5(3) C27 C22 P2 119.5(2) C23 C22 P2 120.8(2) C24 C23 C22 119.1(3) C25 C24 C23 120.9(3) C26 C25 C24 120.2(3) C25 C26 C27 119.6(3) C22 C27 C26 120.6(3) C33 C28 C29 119.4(3) C33 C28 P2 122.0(2) C29 C28 P2 118.6(2) C30 C29 C28 119.8(3) C31 C30 C29 120.3(3) C30 C31 C32 120.1(3) C31 C32 C33 120.2(3) C32 C33 C28 120.3(3) C34 O2 C37 107.2(3) C35 C34 O2 110.8(4) C34 C35 C36 107.5(4) C35 C36 C37 101.4(3) O2 C37 C36 107.4(3) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Br1 Ni1 2.3743(5) Br2 Ni1 2.3545(4) Ni1 N1 1.9874(19) Ni1 P2 2.3010(7) P1 N1 1.596(2) P1 C10 1.802(2) P1 C16 1.807(3) P1 C1 1.809(2) P2 C28 1.810(3) P2 C22 1.825(3) P2 C1 1.838(3) O1 C6 1.367(3) O1 C9 1.421(3) N1 C2 1.488(3) C2 C3 1.521(4) C3 C4 1.388(4) C3 C8 1.391(4) C4 C5 1.376(4) C5 C6 1.393(4) C6 C7 1.385(4) C7 C8 1.396(4) C10 C15 1.374(4) C10 C11 1.398(4) C11 C12 1.386(4) C12 C13 1.379(4) C13 C14 1.382(4) C14 C15 1.389(4) C16 C21 1.392(3) C16 C17 1.399(4) C17 C18 1.382(4) C18 C19 1.394(4) C19 C20 1.375(4) C20 C21 1.387(4) C22 C27 1.385(4) C22 C23 1.401(4) C23 C24 1.392(4) C24 C25 1.379(5) C25 C26 1.378(5) C26 C27 1.395(4) C28 C33 1.391(4) C28 C29 1.392(4) C29 C30 1.392(4) C30 C31 1.378(4) C31 C32 1.379(4) C32 C33 1.384(4) O2 C34 1.423(5) O2 C37 1.429(5) C34 C35 1.364(6) C35 C36 1.502(5) C36 C37 1.519(5)