#------------------------------------------------------------------------------ #$Date: 2014-07-11 17:35:18 +0300 (Fri, 11 Jul 2014) $ #$Revision: 120071 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/50/50/1505008.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_1505008 loop_ _publ_author_name 'Soutullo, Morgan D.' 'Odom, Carl I.' 'Salter, E. Alan' 'Stenson, Alexandra C.' 'Sykora, Richard E.' 'Wierzbicki, Andrzej' 'Davis, James H.' _publ_section_title ; Ultra-Easy Access to NH2-Functionalized TSILs, Their Potential as Highly Volume-Efficient Electrophile Scavengers, and Insights into the Electronics of Girard's Reagent T, A Venerable Chemical Work Horse ; _journal_issue 4 _journal_name_full 'Journal of Combinatorial Chemistry' _journal_page_first 571 _journal_volume 9 _journal_year 2007 _chemical_formula_moiety 'C24 H20 B, C12 H19 N4 O2' _chemical_formula_sum 'C36 H39 B N4 O2' _chemical_formula_weight 570.52 _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 difmap _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _audit_creation_method SHELXL-97 _cell_angle_alpha 90.00 _cell_angle_beta 100.298(9) _cell_angle_gamma 90.00 _cell_formula_units_Z 4 _cell_length_a 12.7145(17) _cell_length_b 15.8471(17) _cell_length_c 15.7636(15) _cell_measurement_reflns_used 25 _cell_measurement_temperature 290(2) _cell_measurement_theta_max 12.00 _cell_measurement_theta_min 9.99 _cell_volume 3125.0(6) _computing_cell_refinement 'CAD4/PC v1.2' _computing_data_collection 'CAD4/PC v1.2' _computing_data_reduction XCAD4PC _computing_molecular_graphics 'SHELXP-97 (Sheldrick, 1997)' _computing_publication_material 'SHELXCIF-97 (Sheldrick, 1997)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 290(2) _diffrn_measured_fraction_theta_full 0.999 _diffrn_measured_fraction_theta_max 0.999 _diffrn_measurement_device_type 'Nonius CAD4' _diffrn_measurement_method 'Th/2Th 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 0.0344 _diffrn_reflns_av_sigmaI/netI 0.0281 _diffrn_reflns_limit_h_max 15 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_k_max 18 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_l_max 18 _diffrn_reflns_limit_l_min -18 _diffrn_reflns_number 5749 _diffrn_reflns_theta_full 24.97 _diffrn_reflns_theta_max 24.97 _diffrn_reflns_theta_min 2.07 _diffrn_standards_interval_time 7200 _diffrn_standards_number 3 _exptl_absorpt_coefficient_mu 0.075 _exptl_absorpt_correction_T_max 0.9814 _exptl_absorpt_correction_T_min 0.8595 _exptl_absorpt_correction_type psi-scan _exptl_absorpt_process_details 'North et al., 1968' _exptl_crystal_colour colorless _exptl_crystal_density_diffrn 1.213 _exptl_crystal_density_method 'not measured' _exptl_crystal_description prism _exptl_crystal_F_000 1216 _exptl_crystal_size_max 1.30 _exptl_crystal_size_mid 0.790 _exptl_crystal_size_min 0.636 _refine_diff_density_max 0.172 _refine_diff_density_min -0.148 _refine_diff_density_rms 0.032 _refine_ls_extinction_coef 0.0039(6) _refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^ _refine_ls_extinction_method SHELXL _refine_ls_goodness_of_fit_ref 1.019 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 545 _refine_ls_number_reflns 5486 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.019 _refine_ls_R_factor_all 0.0701 _refine_ls_R_factor_gt 0.0376 _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^)+(0.0525P)^2^+0.4680P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.0959 _refine_ls_wR_factor_ref 0.1097 _reflns_number_gt 3825 _reflns_number_total 5486 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file cc060151jsi20070424_044351.cif _[local]_cod_data_source_block Girard2 _[local]_cod_cif_authors_sg_H-M P2(1)/n _cod_database_code 1505008 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_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 N1 N 0.18390(11) -0.16733(9) -0.04879(10) 0.0530(4) Uani 1 1 d N2 N 0.15341(14) 0.06269(10) -0.08008(10) 0.0572(4) Uani 1 1 d H2D H 0.0987(18) 0.0617(14) -0.1269(15) 0.084(7) Uiso 1 1 d N3 N 0.18428(16) 0.14115(10) -0.04644(10) 0.0628(4) Uani 1 1 d H3D H 0.245(2) 0.1609(15) -0.0603(15) 0.088(8) Uiso 1 1 d N4 N 0.20547(14) 0.23444(11) 0.06461(11) 0.0653(5) Uani 1 1 d H4C H 0.2452(17) 0.2595(13) 0.0327(13) 0.072(6) Uiso 1 1 d O1 O 0.27346(11) -0.00798(9) 0.01493(10) 0.0781(4) Uani 1 1 d O2 O 0.09145(10) 0.12338(8) 0.06216(9) 0.0634(4) Uani 1 1 d B1 B 0.22790(15) -0.03603(11) 0.64335(12) 0.0415(4) Uani 1 1 d C1 C 0.1540(2) -0.16836(18) 0.03923(14) 0.0693(6) Uani 1 1 d H1A H 0.074(2) -0.1532(13) 0.0327(14) 0.080(7) Uiso 1 1 d H1B H 0.169(2) -0.2238(18) 0.0625(16) 0.105(8) Uiso 1 1 d H1C H 0.193(2) -0.1260(16) 0.0739(16) 0.093(8) Uiso 1 1 d C2 C 0.30092(18) -0.18407(19) -0.0425(2) 0.0787(7) Uani 1 1 d H2A H 0.3149(17) -0.2415(16) -0.0196(14) 0.081(7) Uiso 1 1 d H2B H 0.3169(18) -0.1808(14) -0.0996(16) 0.081(8) Uiso 1 1 d H2C H 0.337(2) -0.1411(18) -0.0022(17) 0.109(9) Uiso 1 1 d C3 C 0.1232(2) -0.23618(14) -0.10171(16) 0.0644(5) Uani 1 1 d H3A H 0.1435(18) -0.2908(15) -0.0765(14) 0.085(7) Uiso 1 1 d H3B H 0.1413(16) -0.2319(13) -0.1595(14) 0.072(6) Uiso 1 1 d H3C H 0.0499(19) -0.2257(13) -0.1013(13) 0.072(6) Uiso 1 1 d C4 C 0.15231(16) -0.08548(11) -0.09296(13) 0.0512(4) Uani 1 1 d H4A H 0.0786(15) -0.0823(11) -0.0987(11) 0.052(5) Uiso 1 1 d H4B H 0.1749(14) -0.0883(11) -0.1466(13) 0.058(5) Uiso 1 1 d C5 C 0.20039(14) -0.00799(12) -0.04580(11) 0.0516(4) Uani 1 1 d C6 C 0.15634(14) 0.16288(11) 0.03053(12) 0.0502(4) Uani 1 1 d C7 C 0.17947(13) 0.27858(11) 0.13601(11) 0.0509(4) Uani 1 1 d C8 C 0.15865(16) 0.23703(13) 0.20796(12) 0.0593(5) Uani 1 1 d H8A H 0.1598(16) 0.1784(14) 0.2087(13) 0.075(6) Uiso 1 1 d C9 C 0.13064(19) 0.28246(14) 0.27458(13) 0.0697(6) Uani 1 1 d H9A H 0.1106(16) 0.2531(13) 0.3204(14) 0.075(6) Uiso 1 1 d C10 C 0.1258(2) 0.36875(14) 0.27176(14) 0.0731(6) Uani 1 1 d H10A H 0.1030(17) 0.4021(14) 0.3180(14) 0.084(7) Uiso 1 1 d C11 C 0.1497(2) 0.40983(14) 0.20129(15) 0.0759(6) Uani 1 1 d H11A H 0.148(2) 0.4706(17) 0.1985(16) 0.101(8) Uiso 1 1 d C12 C 0.17622(18) 0.36562(13) 0.13324(15) 0.0649(5) Uani 1 1 d H12A H 0.1945(18) 0.3919(14) 0.0820(15) 0.089(7) Uiso 1 1 d C13 C 0.33564(12) -0.05322(10) 0.71652(10) 0.0425(4) Uani 1 1 d C14 C 0.35899(15) -0.01136(12) 0.79502(11) 0.0503(4) Uani 1 1 d H14A H 0.3093(15) 0.0307(12) 0.8115(11) 0.057(5) Uiso 1 1 d C15 C 0.45234(17) -0.02617(14) 0.85470(14) 0.0649(5) Uani 1 1 d H15A H 0.4668(19) 0.0062(15) 0.9110(17) 0.098(8) Uiso 1 1 d C16 C 0.52613(17) -0.08322(14) 0.83685(15) 0.0670(6) Uani 1 1 d H16A H 0.593(2) -0.0965(15) 0.8766(15) 0.095(7) Uiso 1 1 d C17 C 0.50672(15) -0.12606(13) 0.76006(15) 0.0619(5) Uani 1 1 d H17A H 0.5564(17) -0.1673(13) 0.7444(13) 0.073(6) Uiso 1 1 d C18 C 0.41289(14) -0.11165(11) 0.70131(13) 0.0526(4) Uani 1 1 d H18A H 0.4010(14) -0.1438(11) 0.6475(12) 0.054(5) Uiso 1 1 d C19 C 0.13786(13) 0.01843(10) 0.68315(10) 0.0431(4) Uani 1 1 d C20 C 0.15156(16) 0.10565(11) 0.69819(11) 0.0537(5) Uani 1 1 d H20A H 0.2176(15) 0.1316(11) 0.6859(11) 0.055(5) Uiso 1 1 d C21 C 0.07672(19) 0.15522(13) 0.72798(13) 0.0641(5) Uani 1 1 d H21A H 0.0925(18) 0.2164(15) 0.7387(14) 0.087(7) Uiso 1 1 d C22 C -0.01661(18) 0.12050(15) 0.74403(13) 0.0683(6) Uani 1 1 d H22A H -0.0692(16) 0.1565(13) 0.7648(13) 0.071(6) Uiso 1 1 d C23 C -0.03284(17) 0.03516(15) 0.73149(14) 0.0669(6) Uani 1 1 d H23A H -0.0974(18) 0.0105(13) 0.7438(14) 0.077(7) Uiso 1 1 d C24 C 0.04355(14) -0.01405(12) 0.70204(12) 0.0527(4) Uani 1 1 d H24A H 0.0283(15) -0.0759(13) 0.6945(12) 0.070(6) Uiso 1 1 d C25 C 0.25906(13) 0.01869(10) 0.56278(10) 0.0432(4) Uani 1 1 d C26 C 0.36245(15) 0.03238(11) 0.54896(13) 0.0509(4) Uani 1 1 d H26A H 0.4188(15) 0.0125(11) 0.5890(12) 0.053(5) Uiso 1 1 d C27 C 0.38552(18) 0.07495(12) 0.47731(13) 0.0618(5) Uani 1 1 d H27A H 0.4614(18) 0.0841(13) 0.4689(14) 0.082(6) Uiso 1 1 d C28 C 0.3039(2) 0.10586(12) 0.41619(13) 0.0645(5) Uani 1 1 d H28A H 0.3195(16) 0.1330(13) 0.3642(14) 0.078(6) Uiso 1 1 d C29 C 0.20062(19) 0.09648(12) 0.42876(12) 0.0621(5) Uani 1 1 d H29A H 0.1418(19) 0.1205(14) 0.3839(15) 0.087(7) Uiso 1 1 d C30 C 0.17879(16) 0.05469(11) 0.50040(12) 0.0529(4) Uani 1 1 d H30A H 0.1038(15) 0.0497(11) 0.5105(11) 0.056(5) Uiso 1 1 d C31 C 0.17454(12) -0.12753(10) 0.60870(10) 0.0412(4) Uani 1 1 d C32 C 0.11623(13) -0.14207(11) 0.52610(11) 0.0469(4) Uani 1 1 d H32A H 0.1124(13) -0.0967(11) 0.4836(11) 0.053(5) Uiso 1 1 d C33 C 0.06457(14) -0.21777(12) 0.50204(13) 0.0556(5) Uani 1 1 d H33A H 0.0282(16) -0.2261(12) 0.4432(13) 0.070(6) Uiso 1 1 d C34 C 0.06848(14) -0.28261(12) 0.55994(14) 0.0573(5) Uani 1 1 d H34A H 0.0342(15) -0.3364(12) 0.5449(12) 0.065(5) Uiso 1 1 d C35 C 0.12507(15) -0.27167(12) 0.64246(13) 0.0542(5) Uani 1 1 d H35A H 0.1287(14) -0.3164(12) 0.6834(12) 0.059(5) Uiso 1 1 d C36 C 0.17712(14) -0.19609(11) 0.66484(12) 0.0477(4) Uani 1 1 d H36A H 0.2163(15) -0.1902(11) 0.7229(13) 0.062(5) Uiso 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 N1 0.0509(8) 0.0505(9) 0.0564(9) 0.0065(7) 0.0059(7) 0.0038(7) N2 0.0705(10) 0.0496(9) 0.0497(9) -0.0047(7) 0.0056(8) 0.0013(8) N3 0.0808(12) 0.0515(10) 0.0612(10) -0.0094(8) 0.0265(9) -0.0113(9) N4 0.0729(11) 0.0590(10) 0.0712(11) -0.0158(8) 0.0325(9) -0.0239(9) O1 0.0685(9) 0.0752(10) 0.0782(10) -0.0053(8) -0.0206(8) -0.0044(7) O2 0.0589(8) 0.0627(8) 0.0732(8) -0.0153(7) 0.0245(7) -0.0184(7) B1 0.0427(10) 0.0381(10) 0.0418(10) -0.0001(8) 0.0021(8) 0.0023(8) C1 0.0832(17) 0.0705(15) 0.0526(12) 0.0110(11) 0.0075(11) -0.0003(13) C2 0.0569(13) 0.0713(17) 0.105(2) 0.0103(16) 0.0078(14) 0.0167(12) C3 0.0748(15) 0.0512(12) 0.0687(14) -0.0003(10) 0.0166(11) -0.0037(11) C4 0.0495(11) 0.0502(11) 0.0515(11) 0.0063(8) 0.0025(9) 0.0020(8) C5 0.0487(10) 0.0564(11) 0.0485(10) 0.0007(8) 0.0055(8) -0.0023(8) C6 0.0475(10) 0.0488(10) 0.0549(10) -0.0025(8) 0.0113(8) 0.0004(8) C7 0.0468(10) 0.0485(10) 0.0564(10) -0.0065(8) 0.0069(8) -0.0055(8) C8 0.0747(13) 0.0452(11) 0.0554(11) 0.0009(9) 0.0044(9) 0.0018(10) C9 0.0972(16) 0.0630(13) 0.0476(11) 0.0058(10) 0.0094(11) 0.0078(12) C10 0.0969(17) 0.0618(13) 0.0597(13) -0.0051(11) 0.0119(12) 0.0187(12) C11 0.1061(18) 0.0451(12) 0.0765(15) -0.0011(11) 0.0168(13) 0.0107(12) C12 0.0785(14) 0.0515(11) 0.0660(12) 0.0041(10) 0.0161(11) -0.0043(10) C13 0.0431(9) 0.0354(8) 0.0476(9) 0.0065(7) 0.0042(7) -0.0021(7) C14 0.0523(10) 0.0471(10) 0.0485(10) 0.0017(8) 0.0010(8) -0.0086(9) C15 0.0645(13) 0.0654(13) 0.0572(12) 0.0053(10) -0.0097(10) -0.0169(11) C16 0.0535(12) 0.0613(13) 0.0765(14) 0.0218(11) -0.0145(10) -0.0113(10) C17 0.0459(10) 0.0481(11) 0.0884(15) 0.0191(11) 0.0030(10) 0.0027(9) C18 0.0488(10) 0.0445(10) 0.0616(11) 0.0052(9) 0.0020(8) 0.0030(8) C19 0.0453(9) 0.0423(9) 0.0381(8) -0.0007(7) -0.0024(7) 0.0047(7) C20 0.0638(12) 0.0422(10) 0.0541(10) -0.0009(8) 0.0077(9) 0.0037(9) C21 0.0840(15) 0.0481(11) 0.0574(11) -0.0042(9) 0.0050(10) 0.0192(11) C22 0.0633(13) 0.0735(15) 0.0653(12) -0.0149(11) 0.0039(10) 0.0273(12) C23 0.0439(11) 0.0805(15) 0.0750(14) -0.0168(11) 0.0075(10) 0.0061(10) C24 0.0436(10) 0.0539(11) 0.0584(11) -0.0092(9) 0.0028(8) 0.0023(8) C25 0.0500(10) 0.0334(8) 0.0450(9) -0.0031(7) 0.0051(7) 0.0039(7) C26 0.0535(11) 0.0413(10) 0.0592(11) 0.0033(8) 0.0135(9) 0.0089(8) C27 0.0730(13) 0.0475(11) 0.0721(13) 0.0034(9) 0.0324(11) 0.0067(10) C28 0.1020(17) 0.0434(10) 0.0511(11) 0.0038(9) 0.0220(11) -0.0006(11) C29 0.0847(15) 0.0447(11) 0.0506(11) 0.0075(9) -0.0050(10) -0.0042(10) C30 0.0550(11) 0.0447(10) 0.0548(10) 0.0060(8) -0.0013(9) -0.0017(8) C31 0.0379(8) 0.0401(9) 0.0455(9) -0.0032(7) 0.0074(7) 0.0047(7) C32 0.0461(9) 0.0447(10) 0.0475(9) 0.0001(8) 0.0023(8) 0.0027(8) C33 0.0484(10) 0.0557(11) 0.0573(11) -0.0101(9) -0.0044(9) -0.0014(8) C34 0.0476(10) 0.0435(10) 0.0780(13) -0.0089(10) 0.0035(9) -0.0068(8) C35 0.0547(11) 0.0416(10) 0.0658(12) 0.0050(9) 0.0091(9) -0.0013(8) C36 0.0517(10) 0.0420(9) 0.0477(10) -0.0017(8) 0.0041(8) -0.0002(8) 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' B B 0.0013 0.0007 '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' 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 C4 N1 C2 111.46(17) C4 N1 C3 107.69(15) C2 N1 C3 108.29(19) C4 N1 C1 110.41(16) C2 N1 C1 110.46(19) C3 N1 C1 108.41(17) C5 N2 N3 121.55(17) C6 N3 N2 117.78(16) C6 N4 C7 124.86(16) C25 B1 C19 107.35(13) C25 B1 C13 110.06(13) C19 B1 C13 111.58(13) C25 B1 C31 110.43(13) C19 B1 C31 108.30(13) C13 B1 C31 109.10(13) N1 C4 C5 115.23(15) O1 C5 N2 122.98(18) O1 C5 C4 125.25(17) N2 C5 C4 111.76(15) O2 C6 N4 124.57(17) O2 C6 N3 122.61(17) N4 C6 N3 112.76(16) C8 C7 C12 119.65(18) C8 C7 N4 121.72(17) C12 C7 N4 118.63(17) C9 C8 C7 119.59(19) C10 C9 C8 121.1(2) C11 C10 C9 119.1(2) C10 C11 C12 120.9(2) C11 C12 C7 119.7(2) C14 C13 C18 115.05(16) C14 C13 B1 124.28(15) C18 C13 B1 120.65(15) C13 C14 C15 122.73(19) C16 C15 C14 120.3(2) C15 C16 C17 119.15(19) C16 C17 C18 120.2(2) C17 C18 C13 122.55(19) C24 C19 C20 114.47(16) C24 C19 B1 125.12(15) C20 C19 B1 120.38(15) C21 C20 C19 123.0(2) C22 C21 C20 120.4(2) C21 C22 C23 118.67(19) C22 C23 C24 120.2(2) C19 C24 C23 123.18(19) C26 C25 C30 114.62(16) C26 C25 B1 124.73(15) C30 C25 B1 120.64(15) C25 C26 C27 123.13(19) C28 C27 C26 120.0(2) C29 C28 C27 118.88(19) C28 C29 C30 120.56(19) C29 C30 C25 122.72(19) C32 C31 C36 114.22(15) C32 C31 B1 124.82(15) C36 C31 B1 120.73(14) C33 C32 C31 122.93(17) C34 C33 C32 120.50(18) C33 C34 C35 118.99(18) C34 C35 C36 119.61(18) C35 C36 C31 123.74(17) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance N1 C4 1.493(2) N1 C2 1.497(3) N1 C3 1.500(3) N1 C1 1.503(3) N2 C5 1.337(2) N2 N3 1.381(2) N3 C6 1.368(2) N4 C6 1.358(2) N4 C7 1.414(2) O1 C5 1.209(2) O2 C6 1.212(2) B1 C25 1.644(2) B1 C19 1.645(2) B1 C13 1.648(2) B1 C31 1.652(2) C4 C5 1.507(3) C7 C8 1.377(3) C7 C12 1.380(3) C8 C9 1.372(3) C9 C10 1.369(3) C10 C11 1.368(3) C11 C12 1.373(3) C13 C14 1.389(2) C13 C18 1.401(2) C14 C15 1.396(3) C15 C16 1.368(3) C16 C17 1.371(3) C17 C18 1.392(3) C19 C24 1.385(2) C19 C20 1.408(2) C20 C21 1.379(3) C21 C22 1.372(3) C22 C23 1.377(3) C23 C24 1.389(3) C25 C26 1.387(2) C25 C30 1.405(2) C26 C27 1.391(3) C27 C28 1.374(3) C28 C29 1.371(3) C29 C30 1.380(3) C31 C32 1.397(2) C31 C36 1.398(2) C32 C33 1.388(2) C33 C34 1.369(3) C34 C35 1.380(3) C35 C36 1.383(2) _journal_paper_doi 10.1021/cc060151j