#------------------------------------------------------------------------------ #$Date: 2012-10-25 12:56:25 +0300 (Thu, 25 Oct 2012) $ #$Revision: 68360 $ #$URL: file:///home/coder/svn-repositories/cod/cif/4/11/49/4114976.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_4114976 loop_ _publ_author_name 'Akikazu Matsumoto' 'Toshihiro Tanaka' 'Takashi Tsubouchi' 'Kohji Tashiro' 'Seishi Saragai' 'Shinsuke Nakamoto' _publ_section_title ; Crystal Engineering for Topochemical Polymerization of Muconic Esters Using Halogen-Halogen and CH/\p Interactions as Weak Intermolecular Interactions ; _journal_name_full 'Journal of the American Chemical Society' _journal_page_first 8891 _journal_page_last 8902 _journal_volume 124 _journal_year 2002 _chemical_compound_source 'Local laboratory' _chemical_formula_sum 'C20 H18 O4' _chemical_formula_weight 322.38 _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' _atom_type_scat_source 'D.Waasmaier&A.Kirfel,Acta Cryst.1995,A51, 416-431' _cell_angle_alpha 90.000(0) _cell_angle_beta 104.683(60) _cell_angle_gamma 90.000(0) _cell_formula_units_Z 2 _cell_length_a 9.152(22) _cell_length_b 5.706(6) _cell_length_c 16.959(24) _cell_measurement_reflns_used 4942 _cell_measurement_temperature 298 _cell_measurement_theta_max 32.94 _cell_measurement_theta_min 1 _cell_volume 857(3) _computing_data_collection 'DIP Image plate' _computing_data_reduction maXus _computing_molecular_graphics maXus _computing_publication_material maXus _computing_structure_refinement maXus _computing_structure_solution maXus _diffrn_measurement_device 'DIP Image plate' _diffrn_orient_matrix_type X=UH _diffrn_orient_matrix_UB_11 0.07153 _diffrn_orient_matrix_UB_12 0.00000 _diffrn_orient_matrix_UB_13 0.00000 _diffrn_orient_matrix_UB_21 0.00000 _diffrn_orient_matrix_UB_22 0.06766 _diffrn_orient_matrix_UB_23 0.00000 _diffrn_orient_matrix_UB_31 0.00000 _diffrn_orient_matrix_UB_32 0.00000 _diffrn_orient_matrix_UB_33 0.19577 _diffrn_radiation_type xray _diffrn_radiation_wavelength 0.71073 _diffrn_reflns_limit_h_max 12 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_k_max 5 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_l_max 25 _diffrn_reflns_limit_l_min -28 _diffrn_reflns_number 2038 _diffrn_reflns_theta_max 32.94 _exptl_absorpt_coefficient_mu 0.86 _exptl_absorpt_correction_type none _exptl_crystal_colour Colourless _exptl_crystal_density_diffrn 1.250 _exptl_crystal_density_meas none _exptl_crystal_description Needle _exptl_crystal_size_max 0.5 _exptl_crystal_size_mid 0.3 _exptl_crystal_size_min 0.3 _refine_diff_density_max 0.11 _refine_diff_density_min -0.14 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_obs 1.060 _refine_ls_hydrogen_treatment refall _refine_ls_number_parameters 288 _refine_ls_number_reflns 1358 _refine_ls_R_factor_obs 0.0385 _refine_ls_shift/esd_max 0.0007 _refine_ls_shift/esd_mean 0.0001 _refine_ls_structure_factor_coef F^2^ _refine_ls_weighting_scheme 'Count statistics' _refine_ls_wR_factor_obs 0.0402 _reflns_number_observed 1358 _reflns_number_total 2038 _reflns_observed_criterion refl_observed_if_I_>_3.00_sigma(I) _[local]_cod_data_source_file ja0205333_s12.cif _[local]_cod_data_source_block ee-1-I _[local]_cod_cif_authors_sg_H-M 'P 21' _[local]_cod_chemical_formula_sum_orig 'C20 H18 O4 ' _cod_original_cell_volume 856.70(56) _cod_database_code 4114976 loop_ _symmetry_equiv_pos_as_xyz +X,+Y,+Z -X,+Y+0.5,-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 O1 0.0593(4) 0.0649(5) 0.0574(4) -.0050(4) 0.0282(4) -.0003(3) O2 0.0947(6) 0.0510(5) 0.0875(6) 0.0112(4) 0.0492(5) 0.0063(4) O3 0.0840(5) 0.0472(4) 0.0592(5) 0.0081(3) 0.0387(4) 0.0078(3) O4 0.1234(8) 0.0510(6) 0.1028(7) 0.0099(5) 0.0720(6) 0.0013(4) C5 0.0564(7) 0.0431(6) 0.0517(6) -.0030(5) 0.0215(5) -.0047(4) C6 0.0537(7) 0.0413(6) 0.0581(7) -.0045(5) 0.0217(5) -.0073(5) C7 0.0472(6) 0.0525(7) 0.0529(7) 0.0002(4) 0.0192(5) -.0009(5) C8 0.0581(8) 0.0839(9) 0.0583(7) 0.0055(6) 0.0244(6) 0.0213(6) C9 0.0594(6) 0.0489(6) 0.0434(5) 0.0052(5) 0.0238(5) 0.0090(4) C10 0.0893(9) 0.0531(7) 0.0658(7) 0.0134(7) 0.0417(7) 0.0076(5) C11 0.103(1) 0.0564(8) 0.0631(8) -.0225(8) 0.0287(7) -.0073(6) C12 0.0709(9) 0.0758(9) 0.0633(8) -.0095(7) 0.0144(6) 0.0002(6) C13 0.0605(8) 0.0684(8) 0.0697(8) 0.0074(6) 0.0167(6) 0.0050(6) C14 0.0636(7) 0.0455(6) 0.0527(6) 0.0025(5) 0.0187(5) -.0005(4) C15 0.0535(6) 0.0455(6) 0.0560(6) -.0042(4) 0.0202(5) -.0036(4) C16 0.0659(8) 0.0443(7) 0.0591(7) 0.0016(5) 0.0289(6) -.0025(5) C17 0.0578(6) 0.0488(6) 0.0567(6) 0.0028(5) 0.0263(5) -.0010(5) C18 0.0823(9) 0.0496(7) 0.0562(7) 0.0033(6) 0.0312(7) 0.0087(5) C19 0.0552(6) 0.0525(7) 0.0417(5) 0.0021(5) 0.0137(5) 0.0042(4) C20 0.0809(9) 0.0628(8) 0.0585(7) -.0177(6) 0.0248(7) -.0056(5) C21 0.088(1) 0.103(1) 0.0678(9) -.0224(8) 0.0379(8) -.0046(8) C22 0.0832(9) 0.098(1) 0.0516(7) 0.0118(8) 0.0270(7) -.0017(7) C23 0.092(1) 0.0631(8) 0.0553(7) 0.0037(7) 0.0181(7) -.0090(5) C24 0.0729(8) 0.0596(7) 0.0595(7) -.0071(6) 0.0227(6) -.0008(5) loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_occupancy _atom_site_thermal_displace_type O1 0.85920(8) 0.2(2) 0.41980(5) 0.0607(4) 1.00 Uij O2 0.9563(1) -0.0460(2) 0.34940(6) 0.0775(5) 1.00 Uij O3 1.21650(9) 0.6854(2) 0.04600(5) 0.0632(4) 1.00 Uij O4 1.1152(1) 0.9339(2) 0.11890(6) 0.0911(6) 1.00 Uij C5 1.0178(1) 0.3403(2) 0.25300(7) 0.0509(5) 1.00 Uij C6 0.9583(1) 0.3587(3) 0.31600(7) 0.0516(5) 1.00 Uij C7 0.9267(1) 0.1550(2) 0.36130(7) 0.0514(5) 1.00 Uij C8 0.8085(1) 0.0330(3) 0.46650(8) 0.0672(7) 1.00 Uij C9 0.6479(1) -0.0287(2) 0.42690(6) 0.0508(5) 1.00 Uij C10 0.6084(2) -0.2396(2) 0.38500(8) 0.0692(7) 1.00 Uij C11 0.4572(2) -0.2875(3) 0.34820(8) 0.0754(8) 1.00 Uij C12 0.3470(2) -0.1324(3) 0.35350(8) 0.0718(8) 1.00 Uij C13 0.3849(1) 0.0730(3) 0.39430(8) 0.0677(7) 1.00 Uij C14 0.5334(1) 0.1242(2) 0.43100(7) 0.0549(6) 1.00 Uij C15 1.0484(1) 0.5395(3) 0.20710(7) 0.0523(5) 1.00 Uij C16 1.1143(1) 0.5268(2) 0.14640(7) 0.0567(6) 1.00 Uij C17 1.1463(1) 0.7368(2) 0.10380(7) 0.0547(6) 1.00 Uij C18 1.2550(2) 0.8797(3) 0.00080(8) 0.0631(7) 1.00 Uij C19 1.3163(1) 0.7891(2) -0.06700(6) 0.0508(5) 1.00 Uij C20 1.4189(1) 0.9228(3) -0.09380(8) 0.0684(7) 1.00 Uij C21 1.4745(2) 0.8505(3) -0.15810(9) 0.0862(9) 1.00 Uij C22 1.4288(2) 0.6438(3) -0.19690(8) 0.0783(9) 1.00 Uij C23 1.3276(2) 0.5068(2) -0.17020(8) 0.0718(7) 1.00 Uij C24 1.2710(2) 0.5777(3) -0.10640(8) 0.0650(7) 1.00 Uij H5 1.043(1) 0.194(3) 0.2379(7) 0.067(3) 1.00 Uiso H6 0.935(1) 0.483(2) 0.3316(7) 0.051(3) 1.00 Uiso H8A 0.811(1) 0.123(2) 0.5242(8) 0.075(4) 1.00 Uiso H8B 0.876(1) -0.100(2) 0.4694(7) 0.063(3) 1.00 Uiso H10 0.689(2) -0.338(3) 0.3811(9) 0.092(4) 1.00 Uiso H11 0.424(2) -0.427(3) 0.318(1) 0.110(5) 1.00 Uiso H12 0.231(2) -0.177(2) 0.3315(9) 0.095(4) 1.00 Uiso H13 0.301(1) 0.198(3) 0.3958(8) 0.085(4) 1.00 Uiso H14 0.559(1) 0.274(2) 0.4612(7) 0.067(3) 1.00 Uiso H15 1.015(1) 0.691(3) 0.2238(7) 0.070(4) 1.00 Uiso H16 1.146(1) 0.387(3) 0.1294(8) 0.081(4) 1.00 Uiso H18A 1.331(1) 0.986(3) 0.0406(9) 0.095(4) 1.00 Uiso H18B 1.161(2) 0.955(3) -0.017(1) 0.096(5) 1.00 Uiso H20 1.443(2) 1.077(3) -0.0685(9) 0.097(4) 1.00 Uiso H21 1.543(2) 0.962(4) -0.181(1) 0.140(7) 1.00 Uiso H22 1.465(1) 0.609(3) -0.2425(9) 0.090(4) 1.00 Uiso H23 1.291(2) 0.353(3) -0.199(1) 0.106(4) 1.00 Uiso H24 1.202(1) 0.491(3) -0.0848(9) 0.090(5) 1.00 Uiso loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C17 O3 C18 116.7(2) C6 C5 C15 123.3(2) C5 C6 C7 122.6(2) O1 C7 O2 123.1(564) O1 C7 C6 111.1(564) O2 C7 C6 125.8(2) C8 C9 C10 122.0(2) C8 C9 C14 120.1(2) C10 C9 C14 117.9(2) C9 C10 C11 119.7(2) C10 C11 C12 120.7(2) C11 C12 C13 119.7(2) C12 C13 C14 120.6(2) C9 C14 C13 121.3(2) C5 C15 C16 124.5(2) C15 C16 C17 121.8(2) O3 C17 O4 123.1(2) O3 C17 C16 112.1(2) O4 C17 C16 124.8(2) O3 C18 C19 109.5(2) C18 C19 C20 119.0(2) C18 C19 C24 123.1(2) C20 C19 C24 117.9(2) C19 C20 C21 121.1(2) C20 C21 C22 120.7(2) C21 C22 C23 118.9(2) C22 C23 C24 120.8(2) C19 C24 C23 120.5(2) C6 C5 H5 118.8(8) C15 C5 H5 117.8(8) C5 C6 H6 122.5(9) C7 C6 H6 114.9(9) C9 C8 H8B 112.2(8) C9 C10 H10 116.3(10) C11 C10 H10 123.8(10) C10 C11 H11 123.2(10) C12 C11 H11 116.1(10) C5 C15 H15 114.9(8) C16 C15 H15 120.6(8) C15 C16 H16 122.4(9) C17 C16 H16 115.7(9) O3 C18 H18B 101.4(10) C19 C18 H18B 113.4(10) C19 C20 H20 116.6(9) C21 C20 H20 122.1(9) C21 C22 H22 117.0(10) C23 C22 H22 124.0(10) C19 C24 H24 114.5(10) C23 C24 H24 124.9(10) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance O1 C7 1.35(38) O2 C7 1.207(2) O3 C17 1.334(2) O3 C18 1.441(2) O4 C17 1.203(2) C5 C6 1.321(2) C5 C15 1.445(2) C6 C7 1.462(2) C8 C9 1.495(2) C9 C10 1.398(2) C9 C14 1.379(2) C10 C11 1.393(3) C11 C12 1.362(3) C12 C13 1.361(3) C13 C14 1.375(2) C15 C16 1.320(2) C16 C17 1.467(2) C18 C19 1.494(2) C19 C20 1.374(2) C19 C24 1.390(2) C20 C21 1.378(3) C21 C22 1.364(3) C22 C23 1.374(3) C23 C24 1.374(2) C5 H5 0.92(2) C6 H6 0.80(2) C8 H8B 0.97(2) C10 H10 0.95(2) C11 H11 0.95(2) C15 H15 0.98(2) C16 H16 0.92(2) C18 H18B 0.94(2) C20 H20 0.98(2) C22 H22 0.94(2) C24 H24 0.94(2) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 O2 C6 3.444(2) 1_555 1_545 O2 C23 3.475(2) 1_555 2_745 O2 H6 2.71(1) 1_555 1_545 O2 H12 2.72(1) 1_555 1_655 O4 C5 3.517(2) 1_555 1_565 O4 C16 3.415(2) 1_555 1_565 O4 H5 2.72(1) 1_555 1_565 O4 H16 2.60(2) 1_555 1_565 C5 C13 3.908(2) 1_555 1_655 C5 C19 3.807(1) 1_555 2_745 C5 C23 3.652(2) 1_555 2_745 C5 C24 3.476(2) 1_555 2_745 C5 H13 3.17(1) 1_555 1_655 C6 C8 3.893(2) 1_555 2_756 C6 C22 3.809(2) 1_555 2_745 C6 C23 3.703(2) 1_555 2_745 C6 C24 3.978(2) 1_555 2_745 C7 C8 3.933(2) 1_555 2_756 C7 C22 3.710(2) 1_555 2_745 C7 C23 3.579(2) 1_555 2_745 C9 C13 3.862(2) 1_555 2_646 C9 C14 3.809(2) 1_555 2_646 C9 C22 3.910(2) 1_555 2_745 C9 H22 3.13(1) 1_555 2_745 C10 C13 3.878(2) 1_555 2_646 C10 C14 3.812(2) 1_555 1_545 C10 C14 3.752(2) 1_555 2_646 C10 C22 3.811(2) 1_555 2_745 C10 H14 3.14(1) 1_555 1_545 C10 H22 3.07(2) 1_555 2_745 C11 C13 3.824(2) 1_555 1_545 C11 C14 3.637(2) 1_555 1_545 C11 C14 3.758(2) 1_555 2_646 C11 C22 3.884(2) 1_555 2_745 C11 H14 3.15(1) 1_555 1_545 C11 H21 3.18(2) 1_555 2_735 C11 H22 3.08(2) 1_555 2_745 C12 C14 3.802(2) 1_555 2_646 C12 C15 3.701(2) 1_555 1_445 C12 H8A 3.14(1) 1_555 2_646 C12 H14 3.09(1) 1_555 2_646 C12 H22 3.17(1) 1_555 2_745 C13 C14 3.843(2) 1_555 2_646 C13 H11 3.19(2) 1_555 1_565 C13 H14 2.92(1) 1_555 2_646 C14 C14 3.836(2) 1_555 2_646 C14 C14 3.836(2) 1_555 2_656 C14 H14 2.97(1) 1_555 2_646 C15 C19 3.848(2) 1_555 2_745 C15 C24 3.984(2) 1_555 2_745 C15 H12 2.84(1) 1_555 1_665 C16 C18 3.753(2) 1_555 2_745 C16 C21 3.852(2) 1_555 2_845 C16 H18B 2.92(1) 1_555 2_745 C16 H21 3.07(2) 1_555 2_845 C18 C20 3.976(2) 1_555 2_845 C19 C20 3.785(2) 1_555 2_845 C19 H20 3.01(1) 1_555 2_845 C20 C23 3.596(2) 1_555 1_565 C20 C24 3.962(2) 1_555 1_565 C20 C24 3.934(2) 1_555 2_855 C20 H23 3.09(2) 1_555 1_565 C21 C23 3.967(2) 1_555 1_565 C21 H18A 3.11(1) 1_555 2_845 C22 H18A 3.12(1) 1_555 2_845 C23 H20 3.03(2) 1_555 1_545 O2 C6 3.444(2) 1_555 1_545 O2 C23 3.475(2) 1_555 2_745 O2 H6 2.71(1) 1_555 1_545 O2 H12 2.72(1) 1_555 1_655 O4 C5 3.517(2) 1_555 1_565 O4 C16 3.415(2) 1_555 1_565 O4 H5 2.72(1) 1_555 1_565 O4 H16 2.60(2) 1_555 1_565 C5 C13 3.908(2) 1_555 1_655 C5 C19 3.807(1) 1_555 2_745 C5 C23 3.652(2) 1_555 2_745 C5 C24 3.476(2) 1_555 2_745 C5 H13 3.17(1) 1_555 1_655 C6 C8 3.893(2) 1_555 2_756 C6 C22 3.809(2) 1_555 2_745 C6 C23 3.703(2) 1_555 2_745 C6 C24 3.978(2) 1_555 2_745 C7 C8 3.933(2) 1_555 2_756 C7 C22 3.710(2) 1_555 2_745 C7 C23 3.579(2) 1_555 2_745 C9 C13 3.862(2) 1_555 2_646 C9 C14 3.809(2) 1_555 2_646 C9 C22 3.910(2) 1_555 2_745 C9 H22 3.13(1) 1_555 2_745 C10 C13 3.878(2) 1_555 2_646 C10 C14 3.812(2) 1_555 1_545 C10 C14 3.752(2) 1_555 2_646 C10 C22 3.811(2) 1_555 2_745 C10 H14 3.14(1) 1_555 1_545 C10 H22 3.07(2) 1_555 2_745 C11 C13 3.824(2) 1_555 1_545 C11 C14 3.637(2) 1_555 1_545 C11 C14 3.758(2) 1_555 2_646 C11 C22 3.884(2) 1_555 2_745 C11 H14 3.15(1) 1_555 1_545 C11 H21 3.18(2) 1_555 2_735 C11 H22 3.08(2) 1_555 2_745 C12 C14 3.802(2) 1_555 2_646 C12 C15 3.701(2) 1_555 1_445 C12 H8A 3.14(1) 1_555 2_646 C12 H14 3.09(1) 1_555 2_646 C12 H22 3.17(1) 1_555 2_745 C13 C14 3.843(2) 1_555 2_646 C13 H11 3.19(2) 1_555 1_565 C13 H14 2.92(1) 1_555 2_646 C14 C14 3.836(2) 1_555 2_646 C14 C14 3.836(2) 1_555 2_656 C14 H14 2.97(1) 1_555 2_646 C15 C19 3.848(2) 1_555 2_745 C15 C24 3.984(2) 1_555 2_745 C15 H12 2.84(1) 1_555 1_665 C16 C18 3.753(2) 1_555 2_745 C16 C21 3.852(2) 1_555 2_845 C16 H18B 2.92(1) 1_555 2_745 C16 H21 3.07(2) 1_555 2_845 C18 C20 3.976(2) 1_555 2_845 C19 C20 3.785(2) 1_555 2_845 C19 H20 3.01(1) 1_555 2_845 C20 C23 3.596(2) 1_555 1_565 C20 C24 3.962(2) 1_555 1_565 C20 C24 3.934(2) 1_555 2_855 C20 H23 3.09(2) 1_555 1_565 C21 C23 3.967(2) 1_555 1_565 C21 H18A 3.11(1) 1_555 2_845 C22 H18A 3.12(1) 1_555 2_845 C23 H20 3.03(2) 1_555 1_545 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 C18 O3 C17 O4 0.0(2) C18 O3 C17 C16 -179.3(2) C17 O3 C18 C19 -173.6(2) C15 C5 C6 C7 179.4(2) C6 C5 C15 C16 176.6(3) C5 C6 C7 O1 -176.8(365) C5 C6 C7 O2 3.4(2) C8 C9 C10 C11 -179.1(2) C8 C9 C14 C13 179.2(2) C14 C9 C10 C11 0.8(2) C10 C9 C14 C13 -0.8(2) C9 C10 C11 C12 -0.9(2) C10 C11 C12 C13 0.8(2) C11 C12 C13 C14 -0.7(2) C12 C13 C14 C9 0.7(2) C5 C15 C16 C17 -178.1(2) C15 C16 C17 O3 178.4(2) C15 C16 C17 O4 -0.8(2) O3 C18 C19 C20 -151.0(2) O3 C18 C19 C24 31.0(2) C18 C19 C20 C21 -177.6(2) C18 C19 C24 C23 177.8(2) C24 C19 C20 C21 0.4(2) C20 C19 C24 C23 -0.1(2) C19 C20 C21 C22 0.0(2) C20 C21 C22 C23 -0.8(2) C21 C22 C23 C24 1.1(2) C22 C23 C24 C19 -0.6(2) C17 O3 C18 H18B -53.5(10) C15 C5 C6 H6 1.1(10) C6 C5 C15 H15 -3.9(9) H5 C5 C6 C7 -1.9(10) H5 C5 C6 H6 179.8(14) H5 C5 C15 C16 -2.1(10) H5 C5 C15 H15 177.4(13) H6 C6 C7 O1 1.6(365) H6 C6 C7 O2 -178.1(10) H8B C8 C9 C10 -12.1(8) H8B C8 C9 C14 167.9(8) C8 C9 C10 H10 -2.5(11) C14 C9 C10 H10 177.5(11) C9 C10 C11 H11 178.8(13) H10 C10 C11 C12 -177.2(12) H10 C10 C11 H11 2.5(17) H11 C11 C12 C13 -178.9(12) C5 C15 C16 H16 -0.6(11) H15 C15 C16 C17 2.4(9) H15 C15 C16 H16 180.0(14) H16 C16 C17 O3 0.7(10) H16 C16 C17 O4 -178.5(11) H18B C18 C19 C20 96.6(11) H18B C18 C19 C24 -81.4(11) C18 C19 C20 H20 -3.2(10) C18 C19 C24 H24 -3.5(10) C24 C19 C20 H20 174.9(10) C20 C19 C24 H24 178.5(10) H20 C20 C21 C22 -174.1(11) C20 C21 C22 H22 175.6(11) H22 C22 C23 C24 -175.1(11) C22 C23 C24 H24 -179.1(11)