Supplementary Material (ESI) for Journal of Materials Chemistry This journal is © The Royal Society of Chemistry 2003 data_global _journal_coden_Cambridge 1145 loop_ _publ_author_name 'Kazuo Mukai' 'Nagao Azuma' 'Yuko Hosokoshi' 'Katsuya Inoue' 'Syunsuke Jinno' 'Yohji Misaki' 'Yasuo Shimobe' 'Kazuyoshi Tanaka' 'Masateru Taniguchi' _publ_contact_author_name 'Dr Kazuo Mukai' _publ_contact_author_address ; Department of Chemistry, Faculty of Science, Ehime University Matsuyama 790-8577 JAPAN ; _publ_contact_author_email MUKAI@CHEM.SCI.EHIME-U.AC.JP _publ_requested_journal 'Journal of Materials Chemistry' _publ_section_title ; Genuine organic magnetic semiconductors: Electric and magnetic properties of the TCNQ and iodide salts of methyl-pyridinium-substituted verdazyl radicals ; _publ_section_references ; ENTER OTHER REFERENCES Molecular Structure Corporation, Rigaku Corporation. (2000). teXsan. Single Crystal Structure Analysis Software. Version 1.11. MSC, 3200 Research Forest Drive, The Woodlands, TX 77381, USA. Rigaku, 3-9-12 Akishima, Tokyo, Japan. North, A.C.T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351-359. Zachariasen, W. H. (1967). Acta Cryst. 23, 558-564. ; #----------------------------------------------------------------------- #------ data_[p-MePyDV]I_99-10-20_Cu-ta _database_code_CSD 201287 _audit_creation_date 'Tue Apr 2 16:51:59 2002' _audit_creation_method 'by teXsan' _audit_update_record ? #----------------------------------------------------------------------- #------ # CHEMICAL DATA _chemical_formula_sum 'C20 H19 I N5 ' _chemical_formula_moiety ? _chemical_formula_weight 456.31 _chemical_melting_point ? #----------------------------------------------------------------------- #------ # CRYSTAL DATA _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_Int_Tables_number 2 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,-y,-z _cell_length_a 8.703(2) _cell_length_b 13.522(1) _cell_length_c 8.3084(7) _cell_angle_alpha 96.493(9) _cell_angle_beta 91.11(1) _cell_angle_gamma 76.89(1) _cell_volume 946.2(2) _cell_formula_units_Z 2 _cell_measurement_reflns_used 25 _cell_measurement_theta_min 25.50 _cell_measurement_theta_max 25.95 _cell_measurement_temperature 298.2 #----------------------------------------------------------------------- #------ _exptl_crystal_description prismatic _exptl_crystal_colour dark-violet _exptl_crystal_size_max 0.350 _exptl_crystal_size_mid 0.150 _exptl_crystal_size_min 0.130 _exptl_crystal_size_rad ? _exptl_crystal_density_diffrn 1.602 _exptl_crystal_density_meas ? _exptl_crystal_density_method 'not measured' _exptl_absorpt_coefficient_mu 13.526 _exptl_absorpt_correction_type psi-scan _exptl_absorpt_process_details '(North, Phillips & Mathews,1968)' _exptl_absorpt_correction_T_min 0.486 _exptl_absorpt_correction_T_max 0.997 #----------------------------------------------------------------------- #------ # EXPERIMENTAL DATA _diffrn_radiation_type 'Cu K\a' _diffrn_radiation_wavelength 1.5418 _diffrn_measurement_device_type 'Rigaku AFC5R' _diffrn_measurement_method \w-2\q _diffrn_reflns_number 3166 _diffrn_reflns_av_R_equivalents 0.024 _diffrn_reflns_theta_max 61.61 _diffrn_measured_fraction_theta_max 1.0760 _diffrn_reflns_theta_full 61.61 _diffrn_measured_fraction_theta_full 1.0760 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_h_max 9 _diffrn_reflns_limit_k_min -15 _diffrn_reflns_limit_k_max 15 _diffrn_reflns_limit_l_min -9 _diffrn_reflns_limit_l_max 9 _diffrn_standards_number 3 _diffrn_standards_interval_count 150 _diffrn_standards_decay_% 1.12 #----------------------------------------------------------------------- #------ # REFINEMENT DATA _refine_special_details ; Refinement using reflections with F^2^ > -10.0 sigma(F^2^). The weighted R-factor (wR) and goodness of fit (S) are based on F^2^. R-factor (gt) are based on F. The threshold expression of F^2^ > 2.0 sigma(F^2^) is used only for calculating R-factor (gt). ; _reflns_number_total 3166 _reflns_number_gt 2944 _reflns_threshold_expression F^2^>2.0\s(F^2^) _refine_ls_structure_factor_coef Fsqd _refine_ls_R_factor_gt 0.0409 _refine_ls_wR_factor_ref 0.1265 _refine_ls_hydrogen_treatment noref _refine_ls_number_reflns 3156 _refine_ls_number_parameters 236 _refine_ls_goodness_of_fit_ref 1.383 _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'w =3D 1/[\s^2^(Fo^2^) + (0.07400(Max(Fo^2^,0) + 2Fc^2^)/3)^2^]' _refine_ls_shift/su_max 0.0003 _refine_diff_density_max 1.21 _refine_diff_density_min -1.03 _refine_ls_extinction_method 'Zachariasen(1967) type 2 Gaussian isotropic' _refine_ls_extinction_coef 0.17(1) _refine_ls_abs_structure_details ? _refine_ls_abs_structure_Flack ? loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.018 0.009 ;International Tables for Crystallography (1992, Vol. C, Tables 4.2.6.8 and 6.1.1.1) ; H H 0.000 0.000 ;International Tables for Crystallography (1992, Vol. C, Table 6.1.1.2) ; N N 0.031 0.018 ;International Tables for Crystallography (1992, Vol. C, Tables 4.2.6.8 and 6.1.1.1) ; I I -0.326 6.836 ;International Tables for Crystallography (1992, Vol. C, Tables 4.2.6.8 and 6.1.1.1) ; #----------------------------------------------------------------------- #------ # ATOMIC COORDINATES AND DISPLACEMENT PARAMETERS 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_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group I I 0.25399(4) 0.46592(2) 0.20640(4) 0.0637(1) Uani 1.00 d . . . N(1) N 0.5580(4) 0.0836(3) 0.1957(5) 0.0412(9) Uani 1.00 d . . . N(2) N 0.6081(4) -0.0180(2) 0.2011(4) 0.0383(9) Uani 1.00 d . . . N(3) N 0.3722(4) -0.0151(2) 0.3479(4) 0.0372(9) Uani 1.00 d . . . N(4) N 0.3276(4) 0.0859(2) 0.3369(4) 0.0359(8) Uani 1.00 d . . . N(5) N 0.6619(5) -0.3790(3) 0.2917(5) 0.047(1) Uani 1.00 d . . . C(1) C 0.5070(4) -0.0611(3) 0.2701(5) 0.0335(10) Uani 1.00 d . . . C(2) C 0.3893(5) 0.1257(4) 0.2043(6) 0.048(1) Uani 1.00 d . . . C(3) C 0.6654(5) 0.1360(3) 0.1408(5) 0.038(1) Uani 1.00 d . . . C(4) C 0.8248(6) 0.0912(4) 0.1370(6) 0.050(1) Uani 1.00 d . . . C(5) C 0.9305(6) 0.1433(5) 0.0856(7) 0.060(2) Uani 1.00 d . . . C(6) C 0.8788(7) 0.2392(4) 0.0352(7) 0.062(2) Uani 1.00 d . . . C(7) C 0.7205(7) 0.2829(4) 0.0372(6) 0.054(1) Uani 1.00 d . . . C(8) C 0.6129(6) 0.2333(3) 0.0920(6) 0.046(1) Uani 1.00 d . . . C(9) C 0.5597(5) -0.1724(3) 0.2779(5) 0.037(1) Uani 1.00 d . . . C(10) C 0.4758(5) -0.2244(3) 0.3654(6) 0.047(1) Uani 1.00 d . . . C(11) C 0.5279(6) -0.3270(4) 0.3702(7) 0.053(1) Uani 1.00 d . . . C(12) C 0.7454(5) -0.3307(3) 0.2093(5) 0.042(1) Uani 1.00 d . . . C(13) C 0.6970(5) -0.2277(3) 0.1994(5) 0.040(1) Uani 1.00 d . . . C(14) C 0.7137(8) -0.4898(4) 0.2994(8) 0.068(2) Uani 1.00 d . . . C(15) C 0.1909(4) 0.1409(3) 0.4234(5) 0.0329(9) Uani 1.00 d . . . C(16) C 0.1354(5) 0.2450(3) 0.4095(5) 0.041(1) Uani 1.00 d . . . C(17) C 0.0046(5) 0.2991(3) 0.5009(6) 0.048(1) Uani 1.00 d . . . C(18) C -0.0711(5) 0.2511(4) 0.6015(6) 0.049(1) Uani 1.00 d . . . C(19) C -0.0170(5) 0.1481(4) 0.6118(6) 0.047(1) Uani 1.00 d . . . C(20) C 0.1141(5) 0.0928(3) 0.5230(5) 0.039(1) Uani 1.00 d . . . H(1) H 0.3687 0.1981 0.2228 0.0581 Uiso 1.00 calc=20 . . . H(2) H 0.3414 0.1059 0.1058 0.0581 Uiso 1.00 calc=20 . . . H(3) H 0.8613 0.0248 0.1697 0.0597 Uiso 1.00 calc=20 . . . H(4) H 1.0402 0.1128 0.0848 0.0721 Uiso 1.00 calc=20 . . . H(5) H 0.9523 0.2745 -0.0004 0.0741 Uiso 1.00 calc=20 . . . H(6) H 0.6843 0.3482 0.0005 0.0647 Uiso 1.00 calc=20 . . . H(7) H 0.5038 0.2652 0.0964 0.0550 Uiso 1.00 calc=20 . . . H(8) H 0.3823 -0.1885 0.4220 0.0559 Uiso 1.00 calc=20 . . . H(9) H 0.4694 -0.3624 0.4292 0.0639 Uiso 1.00 calc=20 . . . H(10) H 0.8401 -0.3680 0.1563 0.0509 Uiso 1.00 calc=20 . . . H(11) H 0.7574 -0.1943 0.1389 0.0482 Uiso 1.00 calc=20 . . . H(12) H 0.8072 -0.5158 0.2367 0.0811 Uiso 1.00 calc=20 . . . H(13) H 0.6333 -0.5225 0.2576 0.0811 Uiso 1.00 calc=20 . . . H(14) H 0.7341 -0.5026 0.4087 0.0811 Uiso 1.00 calc=20 . . . H(15) H 0.1862 0.2783 0.3388 0.0498 Uiso 1.00 calc=20 . . . H(16) H -0.0330 0.3701 0.4937 0.0575 Uiso 1.00 calc=20 . . . H(17) H -0.1601 0.2887 0.6635 0.0593 Uiso 1.00 calc=20 . . . H(18) H -0.0698 0.1146 0.6802 0.0563 Uiso 1.00 calc=20 . . . H(19) H 0.1507 0.0217 0.5309 0.0465 Uiso 1.00 calc=20 . . . 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 I 0.0895(3) 0.0287(2) 0.0711(3) -0.0099(2) 0.0163(2) 0.0026(2) N(1) 0.038(2) 0.023(2) 0.062(2) -0.002(1) 0.005(2) 0.010(2) N(2) 0.039(2) 0.022(2) 0.053(2) -0.003(1) 0.001(1) 0.004(1) N(3) 0.037(2) 0.020(2) 0.054(2) -0.005(1) 0.000(1) 0.004(1) N(4) 0.034(2) 0.022(2) 0.051(2) -0.002(1) 0.005(1) 0.004(1) N(5) 0.055(2) 0.019(2) 0.063(2) -0.004(2) -0.010(2) 0.000(2) C(1) 0.034(2) 0.021(2) 0.043(2) -0.004(2) -0.004(2) 0.002(2) C(2) 0.040(2) 0.036(2) 0.065(3) 0.006(2) 0.013(2) 0.017(2) C(3) 0.045(2) 0.026(2) 0.043(2) -0.011(2) 0.001(2) 0.001(2) C(4) 0.047(2) 0.038(2) 0.065(3) -0.009(2) 0.004(2) 0.011(2) C(5) 0.044(3) 0.066(4) 0.074(3) -0.018(2) 0.007(2) 0.009(3) C(6) 0.069(3) 0.051(3) 0.073(3) -0.033(3) 0.016(3) 0.000(3) C(7) 0.078(3) 0.032(2) 0.058(3) -0.023(2) 0.004(2) 0.006(2) C(8) 0.052(2) 0.024(2) 0.061(3) -0.008(2) 0.002(2) 0.005(2) C(9) 0.033(2) 0.026(2) 0.053(2) -0.008(2) -0.007(2) -0.002(2) C(10) 0.038(2) 0.026(2) 0.075(3) -0.006(2) 0.003(2) 0.004(2) C(11) 0.049(3) 0.030(2) 0.084(3) -0.015(2) 0.001(2) 0.007(2) C(12) 0.045(2) 0.031(2) 0.046(2) -0.003(2) -0.004(2) -0.003(2) C(13) 0.043(2) 0.027(2) 0.048(2) -0.005(2) -0.003(2) 0.000(2) C(14) 0.086(4) 0.022(2) 0.089(4) -0.001(2) -0.005(3) 0.004(2) C(15) 0.032(2) 0.022(2) 0.044(2) -0.005(2) -0.004(2) 0.000(2) C(16) 0.043(2) 0.025(2) 0.056(2) -0.003(2) 0.004(2) 0.007(2) C(17) 0.045(2) 0.025(2) 0.068(3) 0.005(2) -0.001(2) 0.001(2) C(18) 0.034(2) 0.037(2) 0.073(3) -0.003(2) 0.004(2) -0.005(2) C(19) 0.038(2) 0.039(2) 0.066(3) -0.013(2) 0.007(2) 0.005(2) C(20) 0.040(2) 0.021(2) 0.056(2) -0.009(2) -0.001(2) 0.001(2) #----------------------------------------------------------------------- #------ _computing_data_collection 'MSC/AFC Diffractometer Control' _computing_cell_refinement 'MSC/AFC Diffractometer Control' _computing_data_reduction 'teXsan Ver. 1.11' _computing_structure_solution SIR92 _computing_structure_refinement 'teXsan Ver. 1.10' _computing_publication_material 'teXsan Ver. 1.11' _computing_molecular_graphics ? #----------------------------------------------------------------------- #------ _geom_special_details ; ? ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_1 _geom_bond_site_symmetry_2 _geom_bond_publ_flag N(1) N(2) 1.349(5) . . yes N(1) C(2) 1.450(6) . . yes N(1) C(3) 1.405(5) . . yes N(2) C(1) 1.330(5) . . yes N(3) N(4) 1.345(5) . . yes N(3) C(1) 1.337(5) . . yes N(4) C(2) 1.442(6) . . yes N(4) C(15) 1.413(5) . . yes N(5) C(11) 1.354(6) . . yes N(5) C(12) 1.327(6) . . yes N(5) C(14) 1.472(6) . . yes C(1) C(9) 1.479(6) . . yes C(3) C(4) 1.381(7) . . yes C(3) C(8) 1.394(6) . . yes C(4) C(5) 1.380(7) . . yes C(5) C(6) 1.383(8) . . yes C(6) C(7) 1.370(8) . . yes C(7) C(8) 1.380(7) . . yes C(9) C(10) 1.387(6) . . yes C(9) C(13) 1.388(6) . . yes C(10) C(11) 1.363(6) . . yes C(12) C(13) 1.372(6) . . yes C(15) C(16) 1.398(6) . . yes C(15) C(20) 1.377(6) . . yes C(16) C(17) 1.393(6) . . yes C(17) C(18) 1.375(7) . . yes C(18) C(19) 1.377(7) . . yes C(19) C(20) 1.388(6) . . yes #----------------------------------------------------------------------- #------ loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_2 _geom_angle_site_symmetry_3 _geom_angle_publ_flag N(2) N(1) C(2) 117.3(3) . . . yes N(2) N(1) C(3) 117.6(3) . . . yes C(2) N(1) C(3) 122.9(3) . . . yes N(1) N(2) C(1) 114.6(3) . . . yes N(4) N(3) C(1) 114.1(3) . . . yes N(3) N(4) C(2) 118.1(3) . . . yes N(3) N(4) C(15) 117.5(3) . . . yes C(2) N(4) C(15) 121.6(3) . . . yes C(11) N(5) C(12) 120.4(4) . . . yes C(11) N(5) C(14) 119.1(4) . . . yes C(12) N(5) C(14) 120.5(4) . . . yes N(2) C(1) N(3) 128.1(4) . . . yes N(2) C(1) C(9) 115.5(3) . . . yes N(3) C(1) C(9) 115.9(4) . . . yes N(1) C(2) N(4) 107.7(3) . . . yes N(1) C(3) C(4) 119.6(4) . . . yes N(1) C(3) C(8) 120.7(4) . . . yes C(4) C(3) C(8) 119.7(4) . . . yes C(3) C(4) C(5) 119.7(4) . . . yes C(4) C(5) C(6) 120.8(5) . . . yes C(5) C(6) C(7) 119.3(4) . . . yes C(6) C(7) C(8) 120.8(5) . . . yes C(3) C(8) C(7) 119.6(4) . . . yes C(1) C(9) C(10) 121.4(4) . . . yes C(1) C(9) C(13) 120.6(4) . . . yes C(10) C(9) C(13) 118.0(4) . . . yes C(9) C(10) C(11) 119.9(4) . . . yes N(5) C(11) C(10) 120.8(4) . . . yes N(5) C(12) C(13) 121.0(4) . . . yes C(9) C(13) C(12) 119.9(4) . . . yes N(4) C(15) C(16) 119.6(4) . . . yes N(4) C(15) C(20) 120.2(4) . . . yes C(16) C(15) C(20) 120.1(4) . . . yes C(15) C(16) C(17) 118.9(4) . . . yes C(16) C(17) C(18) 120.9(4) . . . yes C(17) C(18) C(19) 119.6(4) . . . yes C(18) C(19) C(20) 120.6(4) . . . yes C(15) C(20) C(19) 119.9(4) . . . yes #----------------------------------------------------------------------- #------ 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 _geom_torsion_site_symmetry_1 _geom_torsion_site_symmetry_2 _geom_torsion_site_symmetry_3 _geom_torsion_site_symmetry_4 _geom_torsion_publ_flag N(1) N(2) C(1) N(3) -7.4(6) . . . . yes N(1) N(2) C(1) C(9) -179.8(3) . . . . yes N(1) C(2) N(4) N(3) -47.5(5) . . . . yes N(1) C(2) N(4) C(15) 151.8(3) . . . . yes N(1) C(3) C(4) C(5) -178.9(4) . . . . yes N(1) C(3) C(8) C(7) -179.5(4) . . . . yes N(2) N(1) C(2) N(4) 47.9(5) . . . . yes N(2) N(1) C(3) C(4) -17.6(6) . . . . yes N(2) N(1) C(3) C(8) 163.2(4) . . . . yes N(2) C(1) N(3) N(4) 8.2(6) . . . . yes N(2) C(1) C(9) C(10) 171.3(4) . . . . yes N(2) C(1) C(9) C(13) -7.6(5) . . . . yes N(3) N(4) C(15) C(16) -176.8(4) . . . . yes N(3) N(4) C(15) C(20) 4.2(5) . . . . yes N(3) C(1) C(9) C(10) -2.0(6) . . . . yes N(3) C(1) C(9) C(13) 179.1(4) . . . . yes N(4) N(3) C(1) C(9) -179.5(3) . . . . yes N(4) C(2) N(1) C(3) -149.3(4) . . . . yes N(4) C(15) C(16) C(17) -177.3(4) . . . . yes N(4) C(15) C(20) C(19) 177.8(4) . . . . yes N(5) C(11) C(10) C(9) 0.7(7) . . . . yes N(5) C(12) C(13) C(9) 0.7(6) . . . . yes C(1) N(2) N(1) C(2) -23.0(5) . . . . yes C(1) N(2) N(1) C(3) 173.2(4) . . . . yes C(1) N(3) N(4) C(2) 21.9(5) . . . . yes C(1) N(3) N(4) C(15) -176.6(3) . . . . yes C(1) C(9) C(10) C(11) -179.9(4) . . . . yes C(1) C(9) C(13) C(12) 179.2(4) . . . . yes C(2) N(1) C(3) C(4) 179.6(4) . . . . yes C(2) N(1) C(3) C(8) 0.4(6) . . . . yes C(2) N(4) C(15) C(16) -16.0(6) . . . . yes C(2) N(4) C(15) C(20) 165.1(4) . . . . yes C(3) C(4) C(5) C(6) -1.0(8) . . . . yes C(3) C(8) C(7) C(6) -2.2(7) . . . . yes C(4) C(3) C(8) C(7) 1.3(7) . . . . yes C(4) C(5) C(6) C(7) 0.2(8) . . . . yes C(5) C(4) C(3) C(8) 0.2(7) . . . . yes C(5) C(6) C(7) C(8) 1.4(8) . . . . yes C(10) C(9) C(13) C(12) 0.3(6) . . . . yes C(10) C(11) N(5) C(12) 0.3(7) . . . . yes C(10) C(11) N(5) C(14) -179.8(5) . . . . yes C(11) N(5) C(12) C(13) -1.0(6) . . . . yes C(11) C(10) C(9) C(13) -1.0(7) . . . . yes C(13) C(12) N(5) C(14) 179.0(4) . . . . yes C(15) C(16) C(17) C(18) -1.1(7) . . . . yes C(15) C(20) C(19) C(18) -0.1(7) . . . . yes C(16) C(15) C(20) C(19) -1.1(6) . . . . yes C(16) C(17) C(18) C(19) -0.1(7) . . . . yes C(17) C(16) C(15) C(20) 1.7(6) . . . . yes C(17) C(18) C(19) C(20) 0.7(7) . . . . yes C(17) C(18) C(19) C(20) 0.7(7) . . . . yes #----------------------------------------------------------------------- #------ 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 _geom_contact_publ_flag N(2) C(20) 3.365(5) . 2_656 ? N(2) C(2) 3.513(6) . 2_655 ? N(3) N(3) 3.387(7) . 2_656 ? N(3) C(1) 3.444(5) . 2_656 ? N(4) C(9) 3.482(5) . 2_656 ? N(4) C(1) 3.562(5) . 2_656 ? N(4) C(10) 3.576(6) . 2_656 ? N(5) C(16) 3.580(6) . 2_656 ? C(5) C(16) 3.522(7) . 1_655 ? C(5) C(15) 3.571(7) . 1_655 ? C(7) C(14) 3.550(7) . 1_565 ? C(8) C(9) 3.492(6) . 2_655 ? C(8) C(13) 3.598(6) . 2_655 ? C(9) C(15) 3.320(5) . 2_656 ? C(9) C(20) 3.572(5) . 2_656 ? C(12) C(17) 3.271(6) . 2_656 ? C(12) C(16) 3.470(6) . 2_656 ? C(12) C(18) 3.535(6) . 2_656 ? C(13) C(20) 3.408(6) . 2_656 ? C(13) C(15) 3.423(6) . 2_656 ? C(13) C(19) 3.491(6) . 2_656 ? C(13) C(16) 3.546(6) . 2_656 ? C(13) C(18) 3.589(6) . 2_656 ? C(20) C(20) 3.520(8) . 2_556 ? #-----------------------------------------------------------------------