# Electronic Supplementary Material (ESI) for Green Chemistry # This journal is © The Royal Society of Chemistry 2012 data_global _journal_name_full 'Green Chemistry' _journal_coden_Cambridge 1048 _journal_volume ? _journal_page_first ? _journal_year ? _publ_contact_author_name 'Dr Li-Rong Wen' _publ_contact_author_email wenlirong@qust.edu.cn _publ_section_title ; Solvent-free and Efficient Synthesis of Imidazo[1,2-a]pyridine Derivatives via a Novel One-pot Three-component Reaction ; loop_ _publ_author_name 'Li-Rong Wen' 'Zhao-Rui Li' 'Ming Li' 'Han Cao' # Attachment 'compound 4j.cif' data_mx1090 _database_code_depnum_ccdc_archive 'CCDC 831620' #TrackingRef 'compound 4j.cif' _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C20 H18 N2 O3 S' _chemical_formula_sum 'C20 H18 N2 O3 S' _chemical_formula_weight 366.42 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' 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' S S 0.1246 0.1234 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M P-1 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 8.096(3) _cell_length_b 8.432(3) _cell_length_c 14.387(6) _cell_angle_alpha 85.320(18) _cell_angle_beta 88.539(19) _cell_angle_gamma 62.728(10) _cell_volume 870.1(5) _cell_formula_units_Z 2 _cell_measurement_temperature 173(2) _cell_measurement_reflns_used 3456 _cell_measurement_theta_min 1.42 _cell_measurement_theta_max 27.45 _exptl_crystal_description plate _exptl_crystal_colour yellow _exptl_crystal_size_max 0.23 _exptl_crystal_size_mid 0.12 _exptl_crystal_size_min 0.03 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.399 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 384 _exptl_absorpt_coefficient_mu 0.209 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_correction_T_min 0.9535 _exptl_absorpt_correction_T_max 0.9938 _exptl_absorpt_process_details 'CrystalClear (Rigaku Inc., 2007)' _exptl_special_details ; ? ; _diffrn_ambient_temperature 173(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'rotating anode' _diffrn_radiation_monochromator Confocal _diffrn_measurement_device_type 'MM007-HF CCD(Saturn 724+)' _diffrn_measurement_method '\w scans at fixed \c = 45\%' _diffrn_detector_area_resol_mean ? _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% ? _diffrn_reflns_number 7789 _diffrn_reflns_av_R_equivalents 0.0360 _diffrn_reflns_av_sigmaI/netI 0.0378 _diffrn_reflns_limit_h_min -10 _diffrn_reflns_limit_h_max 7 _diffrn_reflns_limit_k_min -10 _diffrn_reflns_limit_k_max 10 _diffrn_reflns_limit_l_min -18 _diffrn_reflns_limit_l_max 18 _diffrn_reflns_theta_min 2.73 _diffrn_reflns_theta_max 27.45 _reflns_number_total 3898 _reflns_number_gt 3606 _reflns_threshold_expression >2sigma(I) _computing_data_collection 'CrystalClear (Rigaku Inc., 2007)' _computing_cell_refinement 'CrystalClear (Rigaku Inc., 2007)' _computing_data_reduction 'CrystalClear (Rigaku Inc., 2007)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'XP in Siemens SHELXTL (Sheldrick, 1994)' _computing_publication_material 'SHELX97 (Sheldrick, 1997)' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0498P)^2^+0.5895P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment constr _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 3898 _refine_ls_number_parameters 236 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0546 _refine_ls_R_factor_gt 0.0496 _refine_ls_wR_factor_ref 0.1218 _refine_ls_wR_factor_gt 0.1179 _refine_ls_goodness_of_fit_ref 1.095 _refine_ls_restrained_S_all 1.095 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 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 S1 S 0.52114(6) 0.26581(6) 0.47627(3) 0.02330(13) Uani 1 1 d . . . O1 O 1.17632(18) 0.44022(19) 0.27040(10) 0.0287(3) Uani 1 1 d . . . O2 O 0.37647(19) 0.73009(19) 0.26261(10) 0.0305(3) Uani 1 1 d . . . O3 O 0.84509(18) 0.04221(17) 0.29961(9) 0.0248(3) Uani 1 1 d . . . N1 N 0.81278(19) 0.31722(19) 0.43730(10) 0.0180(3) Uani 1 1 d . . . N2 N 1.0858(2) 0.3196(2) 0.43145(11) 0.0216(3) Uani 1 1 d . . . H2 H 1.1764 0.3428 0.4109 0.026 Uiso 1 1 calc R . . C1 C 0.8882(2) 0.2577(3) 0.53317(12) 0.0221(4) Uani 1 1 d . . . H1A H 0.8874 0.1437 0.5550 0.027 Uiso 1 1 calc R . . H1B H 0.8166 0.3492 0.5770 0.027 Uiso 1 1 calc R . . C2 C 1.0877(2) 0.2333(3) 0.52346(13) 0.0233(4) Uani 1 1 d . . . H2B H 1.1178 0.2922 0.5725 0.028 Uiso 1 1 calc R . . H2A H 1.1788 0.1049 0.5271 0.028 Uiso 1 1 calc R . . C3 C 0.9336(2) 0.3601(2) 0.38118(12) 0.0171(3) Uani 1 1 d . . . C4 C 0.8899(2) 0.4324(2) 0.29050(12) 0.0181(3) Uani 1 1 d . . . C5 C 0.6951(2) 0.4837(2) 0.25577(12) 0.0173(3) Uani 1 1 d . . . H5 H 0.7022 0.4704 0.1871 0.021 Uiso 1 1 calc R . . C6 C 0.6245(2) 0.3529(2) 0.30191(12) 0.0170(3) Uani 1 1 d . . . H6 H 0.4884 0.4036 0.2887 0.020 Uiso 1 1 calc R . . C7 C 0.6569(2) 0.3172(2) 0.40605(12) 0.0177(3) Uani 1 1 d . . . C8 C 1.0240(2) 0.4676(2) 0.23721(13) 0.0218(4) Uani 1 1 d . . . C9 C 0.9800(3) 0.5368(3) 0.13576(14) 0.0327(5) Uani 1 1 d . . . H9A H 0.9821 0.4422 0.0997 0.049 Uiso 1 1 calc R . . H9C H 1.0729 0.5729 0.1114 0.049 Uiso 1 1 calc R . . H9B H 0.8564 0.6402 0.1306 0.049 Uiso 1 1 calc R . . C10 C 0.5628(2) 0.6751(2) 0.26978(12) 0.0209(4) Uani 1 1 d . . . C11 C 0.5956(2) 0.8145(2) 0.28201(13) 0.0231(4) Uani 1 1 d . . . H11 H 0.7135 0.8114 0.2890 0.028 Uiso 1 1 calc R . . C12 C 0.4179(3) 0.9684(3) 0.28239(15) 0.0330(5) Uani 1 1 d . . . H12 H 0.3951 1.0879 0.2889 0.040 Uiso 1 1 calc R . . C13 C 0.2904(3) 0.9128(3) 0.27185(15) 0.0339(5) Uani 1 1 d . . . H13 H 0.1599 0.9872 0.2708 0.041 Uiso 1 1 calc R . . C14 C 0.7266(2) 0.1747(2) 0.25678(12) 0.0187(3) Uani 1 1 d . . . C15 C 0.6802(3) 0.1708(2) 0.15771(13) 0.0222(4) Uani 1 1 d . . . C16 C 0.5167(3) 0.2990(3) 0.11415(14) 0.0303(4) Uani 1 1 d . . . H16 H 0.4310 0.3959 0.1472 0.036 Uiso 1 1 calc R . . C17 C 0.4786(3) 0.2857(4) 0.02278(16) 0.0411(5) Uani 1 1 d . . . H17 H 0.3668 0.3739 -0.0066 0.049 Uiso 1 1 calc R . . C18 C 0.6011(4) 0.1460(4) -0.02597(15) 0.0423(6) Uani 1 1 d . . . H18 H 0.5735 0.1373 -0.0886 0.051 Uiso 1 1 calc R . . C19 C 0.7647(4) 0.0182(3) 0.01659(16) 0.0435(6) Uani 1 1 d . . . H19 H 0.8502 -0.0778 -0.0171 0.052 Uiso 1 1 calc R . . C20 C 0.8039(3) 0.0301(3) 0.10799(15) 0.0340(5) Uani 1 1 d . . . H20 H 0.9160 -0.0584 0.1370 0.041 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 S1 0.0196(2) 0.0309(3) 0.0215(2) 0.00108(18) 0.00166(16) -0.01400(19) O1 0.0200(6) 0.0380(8) 0.0317(7) 0.0029(6) -0.0013(5) -0.0171(6) O2 0.0230(7) 0.0327(8) 0.0363(8) 0.0010(6) -0.0014(6) -0.0137(6) O3 0.0232(6) 0.0220(6) 0.0265(7) -0.0015(5) -0.0017(5) -0.0078(5) N1 0.0165(7) 0.0214(7) 0.0166(7) -0.0006(6) -0.0007(5) -0.0091(6) N2 0.0173(7) 0.0268(8) 0.0220(8) 0.0022(6) -0.0043(6) -0.0116(6) C1 0.0229(8) 0.0276(9) 0.0157(8) 0.0006(7) -0.0034(7) -0.0117(7) C2 0.0218(9) 0.0257(9) 0.0213(9) 0.0023(7) -0.0061(7) -0.0102(7) C3 0.0138(7) 0.0155(7) 0.0220(8) -0.0029(6) 0.0004(6) -0.0063(6) C4 0.0159(8) 0.0182(8) 0.0201(8) 0.0003(6) -0.0023(6) -0.0079(6) C5 0.0162(7) 0.0187(8) 0.0173(8) 0.0006(6) -0.0015(6) -0.0086(6) C6 0.0157(7) 0.0192(8) 0.0172(8) -0.0005(6) -0.0020(6) -0.0091(6) C7 0.0154(7) 0.0163(8) 0.0199(8) -0.0022(6) 0.0008(6) -0.0057(6) C8 0.0186(8) 0.0210(8) 0.0255(9) 0.0004(7) -0.0003(7) -0.0090(7) C9 0.0276(10) 0.0437(12) 0.0281(10) 0.0075(9) 0.0014(8) -0.0190(9) C10 0.0190(8) 0.0233(9) 0.0173(8) 0.0008(7) -0.0018(6) -0.0073(7) C11 0.0200(8) 0.0256(9) 0.0267(9) -0.0066(7) 0.0021(7) -0.0124(7) C12 0.0407(12) 0.0226(10) 0.0348(11) -0.0051(8) 0.0117(9) -0.0138(9) C13 0.0219(9) 0.0298(10) 0.0349(11) 0.0065(9) 0.0045(8) -0.0006(8) C14 0.0163(8) 0.0207(8) 0.0221(8) -0.0010(7) 0.0008(6) -0.0111(7) C15 0.0263(9) 0.0261(9) 0.0209(9) -0.0032(7) 0.0026(7) -0.0177(8) C16 0.0291(10) 0.0370(11) 0.0238(10) -0.0034(8) -0.0035(8) -0.0141(9) C17 0.0437(13) 0.0547(15) 0.0258(11) -0.0016(10) -0.0094(9) -0.0230(11) C18 0.0630(16) 0.0562(15) 0.0199(10) -0.0076(10) 0.0016(10) -0.0372(13) C19 0.0570(15) 0.0473(14) 0.0305(12) -0.0178(10) 0.0104(11) -0.0257(12) C20 0.0381(12) 0.0323(11) 0.0300(11) -0.0080(9) 0.0029(9) -0.0140(9) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag S1 C7 1.6508(18) . ? O1 C8 1.247(2) . ? O2 C10 1.364(2) . ? O2 C13 1.386(3) . ? O3 C14 1.218(2) . ? N1 C7 1.351(2) . ? N1 C3 1.405(2) . ? N1 C1 1.475(2) . ? N2 C3 1.334(2) . ? N2 C2 1.454(2) . ? N2 H2 0.8800 . ? C1 C2 1.535(3) . ? C1 H1A 0.9900 . ? C1 H1B 0.9900 . ? C2 H2B 0.9900 . ? C2 H2A 0.9900 . ? C3 C4 1.376(3) . ? C4 C8 1.439(2) . ? C4 C5 1.518(2) . ? C5 C10 1.500(2) . ? C5 C6 1.557(2) . ? C5 H5 1.0000 . ? C6 C7 1.509(2) . ? C6 C14 1.535(2) . ? C6 H6 1.0000 . ? C8 C9 1.515(3) . ? C9 H9A 0.9800 . ? C9 H9C 0.9800 . ? C9 H9B 0.9800 . ? C10 C11 1.343(3) . ? C11 C12 1.430(3) . ? C11 H11 0.9500 . ? C12 C13 1.331(3) . ? C12 H12 0.9500 . ? C13 H13 0.9500 . ? C14 C15 1.490(3) . ? C15 C16 1.391(3) . ? C15 C20 1.391(3) . ? C16 C17 1.383(3) . ? C16 H16 0.9500 . ? C17 C18 1.375(4) . ? C17 H17 0.9500 . ? C18 C19 1.384(4) . ? C18 H18 0.9500 . ? C19 C20 1.383(3) . ? C19 H19 0.9500 . ? C20 H20 0.9500 . ? 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_3 _geom_angle_publ_flag C10 O2 C13 106.20(15) . . ? C7 N1 C3 124.63(15) . . ? C7 N1 C1 124.69(14) . . ? C3 N1 C1 110.50(14) . . ? C3 N2 C2 113.49(15) . . ? C3 N2 H2 123.3 . . ? C2 N2 H2 123.3 . . ? N1 C1 C2 102.88(14) . . ? N1 C1 H1A 111.2 . . ? C2 C1 H1A 111.2 . . ? N1 C1 H1B 111.2 . . ? C2 C1 H1B 111.2 . . ? H1A C1 H1B 109.1 . . ? N2 C2 C1 103.21(14) . . ? N2 C2 H2B 111.1 . . ? C1 C2 H2B 111.1 . . ? N2 C2 H2A 111.1 . . ? C1 C2 H2A 111.1 . . ? H2B C2 H2A 109.1 . . ? N2 C3 C4 129.30(16) . . ? N2 C3 N1 108.21(15) . . ? C4 C3 N1 122.49(15) . . ? C3 C4 C8 118.81(16) . . ? C3 C4 C5 116.99(15) . . ? C8 C4 C5 124.02(15) . . ? C10 C5 C4 112.07(14) . . ? C10 C5 C6 111.82(14) . . ? C4 C5 C6 110.43(14) . . ? C10 C5 H5 107.4 . . ? C4 C5 H5 107.4 . . ? C6 C5 H5 107.4 . . ? C7 C6 C14 108.62(14) . . ? C7 C6 C5 113.97(14) . . ? C14 C6 C5 107.81(13) . . ? C7 C6 H6 108.8 . . ? C14 C6 H6 108.8 . . ? C5 C6 H6 108.8 . . ? N1 C7 C6 115.28(14) . . ? N1 C7 S1 121.94(13) . . ? C6 C7 S1 122.60(13) . . ? O1 C8 C4 122.83(17) . . ? O1 C8 C9 118.58(16) . . ? C4 C8 C9 118.57(16) . . ? C8 C9 H9A 109.5 . . ? C8 C9 H9C 109.5 . . ? H9A C9 H9C 109.5 . . ? C8 C9 H9B 109.5 . . ? H9A C9 H9B 109.5 . . ? H9C C9 H9B 109.5 . . ? C11 C10 O2 110.46(16) . . ? C11 C10 C5 130.42(16) . . ? O2 C10 C5 118.91(15) . . ? C10 C11 C12 106.34(17) . . ? C10 C11 H11 126.8 . . ? C12 C11 H11 126.8 . . ? C13 C12 C11 107.11(18) . . ? C13 C12 H12 126.4 . . ? C11 C12 H12 126.4 . . ? C12 C13 O2 109.88(18) . . ? C12 C13 H13 125.1 . . ? O2 C13 H13 125.1 . . ? O3 C14 C15 121.04(16) . . ? O3 C14 C6 121.20(16) . . ? C15 C14 C6 117.73(15) . . ? C16 C15 C20 119.02(18) . . ? C16 C15 C14 122.67(17) . . ? C20 C15 C14 118.29(18) . . ? C17 C16 C15 120.1(2) . . ? C17 C16 H16 119.9 . . ? C15 C16 H16 119.9 . . ? C18 C17 C16 120.6(2) . . ? C18 C17 H17 119.7 . . ? C16 C17 H17 119.7 . . ? C17 C18 C19 119.7(2) . . ? C17 C18 H18 120.1 . . ? C19 C18 H18 120.1 . . ? C20 C19 C18 120.1(2) . . ? C20 C19 H19 119.9 . . ? C18 C19 H19 119.9 . . ? C19 C20 C15 120.4(2) . . ? C19 C20 H20 119.8 . . ? C15 C20 H20 119.8 . . ? 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 C7 N1 C1 C2 164.19(16) . . . . ? C3 N1 C1 C2 -11.04(18) . . . . ? C3 N2 C2 C1 -11.1(2) . . . . ? N1 C1 C2 N2 12.60(18) . . . . ? C2 N2 C3 C4 -176.01(17) . . . . ? C2 N2 C3 N1 4.4(2) . . . . ? C7 N1 C3 N2 -170.50(16) . . . . ? C1 N1 C3 N2 4.73(19) . . . . ? C7 N1 C3 C4 9.9(3) . . . . ? C1 N1 C3 C4 -174.88(16) . . . . ? N2 C3 C4 C8 2.2(3) . . . . ? N1 C3 C4 C8 -178.32(15) . . . . ? N2 C3 C4 C5 -173.03(17) . . . . ? N1 C3 C4 C5 6.5(2) . . . . ? C3 C4 C5 C10 91.97(19) . . . . ? C8 C4 C5 C10 -82.9(2) . . . . ? C3 C4 C5 C6 -33.4(2) . . . . ? C8 C4 C5 C6 151.69(16) . . . . ? C10 C5 C6 C7 -78.82(18) . . . . ? C4 C5 C6 C7 46.69(19) . . . . ? C10 C5 C6 C14 160.53(14) . . . . ? C4 C5 C6 C14 -73.96(17) . . . . ? C3 N1 C7 C6 4.8(2) . . . . ? C1 N1 C7 C6 -169.75(15) . . . . ? C3 N1 C7 S1 -179.84(13) . . . . ? C1 N1 C7 S1 5.6(2) . . . . ? C14 C6 C7 N1 86.84(17) . . . . ? C5 C6 C7 N1 -33.4(2) . . . . ? C14 C6 C7 S1 -88.46(16) . . . . ? C5 C6 C7 S1 151.34(13) . . . . ? C3 C4 C8 O1 -2.1(3) . . . . ? C5 C4 C8 O1 172.76(17) . . . . ? C3 C4 C8 C9 176.41(17) . . . . ? C5 C4 C8 C9 -8.8(3) . . . . ? C13 O2 C10 C11 -0.6(2) . . . . ? C13 O2 C10 C5 -175.74(16) . . . . ? C4 C5 C10 C11 21.0(3) . . . . ? C6 C5 C10 C11 145.61(19) . . . . ? C4 C5 C10 O2 -164.97(15) . . . . ? C6 C5 C10 O2 -40.4(2) . . . . ? O2 C10 C11 C12 -0.2(2) . . . . ? C5 C10 C11 C12 174.27(18) . . . . ? C10 C11 C12 C13 0.9(2) . . . . ? C11 C12 C13 O2 -1.3(2) . . . . ? C10 O2 C13 C12 1.2(2) . . . . ? C7 C6 C14 O3 -15.4(2) . . . . ? C5 C6 C14 O3 108.57(18) . . . . ? C7 C6 C14 C15 166.58(14) . . . . ? C5 C6 C14 C15 -69.47(18) . . . . ? O3 C14 C15 C16 162.34(18) . . . . ? C6 C14 C15 C16 -19.6(2) . . . . ? O3 C14 C15 C20 -15.9(3) . . . . ? C6 C14 C15 C20 162.12(16) . . . . ? C20 C15 C16 C17 0.1(3) . . . . ? C14 C15 C16 C17 -178.17(19) . . . . ? C15 C16 C17 C18 0.1(4) . . . . ? C16 C17 C18 C19 -0.5(4) . . . . ? C17 C18 C19 C20 0.6(4) . . . . ? C18 C19 C20 C15 -0.4(4) . . . . ? C16 C15 C20 C19 0.1(3) . . . . ? C14 C15 C20 C19 178.39(19) . . . . ? loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A N2 H2 O1 0.88 2.12 2.675(2) 120.4 . N2 H2 S1 0.88 2.73 3.4129(19) 135.0 1_655 _diffrn_measured_fraction_theta_max 0.977 _diffrn_reflns_theta_full 27.45 _diffrn_measured_fraction_theta_full 0.977 _refine_diff_density_max 0.406 _refine_diff_density_min -0.292 _refine_diff_density_rms 0.059