#------------------------------------------------------------------------------ #$Date: 2026-06-04 18:01:00 +0100 (Thu, 04 Jun 2026) $ #$Revision: 306215 $ #$URL: svn://www.crystallography.net/cod/cif/7/72/10/7721091.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_7721091 loop_ _publ_author_name 'Wang, Huanzhou' 'Petrov, Andrey A.' 'Petrov, Andrey V.' 'Li, Mingming' 'Fateev, Sergey A.' _publ_section_title ; Crystal structure and properties of acetamidinium lead bromide: a new member of the A3PbBr5 halide family. ; _journal_issue 20 _journal_name_full 'Dalton transactions (Cambridge, England : 2003)' _journal_page_first 7918 _journal_page_last 7925 _journal_paper_doi 10.1039/d6dt00721j _journal_volume 55 _journal_year 2026 _chemical_formula_moiety 'Br5 Pb, 3(C2 H7 N2)' _chemical_formula_sum 'C6 H21 Br5 N6 Pb' _chemical_formula_weight 784.03 _chemical_name_systematic 'Acetamidinium bromoplumbate' _space_group_crystal_system monoclinic _space_group_IT_number 14 _space_group_name_Hall '-P 2ybc' _space_group_name_H-M_alt 'P 1 21/c 1' _atom_sites_solution_hydrogens geom _atom_sites_solution_primary dual _audit_creation_date 2026-04-21 _audit_creation_method ; Olex2 1.5 (compiled 2026.04.10 svn.r48fbca5a for OlexSys, GUI svn.r7537) ; _audit_update_record ; 2026-04-21 deposited with the CCDC. 2026-04-28 downloaded from the CCDC. ; _cell_angle_alpha 90 _cell_angle_beta 100.974(3) _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 18.9112(13) _cell_length_b 9.0412(6) _cell_length_c 11.7688(8) _cell_measurement_reflns_used 9889 _cell_measurement_temperature 100.0(2) _cell_measurement_theta_max 30.46 _cell_measurement_theta_min 2.19 _cell_volume 1975.4(2) _computing_cell_refinement 'SAINT V8.40B (?, 2016)' _computing_data_reduction 'SAINT V8.40B (?, 2016)' _computing_molecular_graphics 'Olex2 1.5 (Dolomanov et al., 2009)' _computing_publication_material 'Olex2 1.5 (Dolomanov et al., 2009)' _computing_structure_refinement 'SHELXL 2018/3 (Sheldrick, 2015)' _computing_structure_solution 'SHELXT (Sheldrick, 2015)' _diffrn_ambient_temperature 100.0(2) _diffrn_detector 'Bruker APEX2 area detector' _diffrn_detector_area_resol_mean 7.9 _diffrn_detector_type 'CCD area detector' _diffrn_measured_fraction_theta_full 1.000 _diffrn_measured_fraction_theta_max 0.999 _diffrn_measurement_device 'three-circle diffractometer' _diffrn_measurement_method '\w and \f scans' _diffrn_radiation_monochromator 'mirror optics' _diffrn_radiation_probe x-ray _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71073 _diffrn_reflns_av_R_equivalents 0.0779 _diffrn_reflns_av_unetI/netI 0.0423 _diffrn_reflns_Laue_measured_fraction_full 1.000 _diffrn_reflns_Laue_measured_fraction_max 0.999 _diffrn_reflns_limit_h_max 24 _diffrn_reflns_limit_h_min -24 _diffrn_reflns_limit_k_max 11 _diffrn_reflns_limit_k_min -11 _diffrn_reflns_limit_l_max 15 _diffrn_reflns_limit_l_min -13 _diffrn_reflns_number 40772 _diffrn_reflns_point_group_measured_fraction_full 1.000 _diffrn_reflns_point_group_measured_fraction_max 0.999 _diffrn_reflns_theta_full 25.242 _diffrn_reflns_theta_max 27.484 _diffrn_reflns_theta_min 2.194 _diffrn_source 'microfocus sealed X-ray tube' _diffrn_source_current 1.0 _diffrn_source_power 0.05 _diffrn_source_type 'Incoatec I\ms' _diffrn_source_voltage 50.0 _diffrn_standards_number 0 _exptl_absorpt_coefficient_mu 18.649 _exptl_absorpt_correction_T_max 0.0998 _exptl_absorpt_correction_T_min 0.0249 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details ; SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1664 before and 0.0874 after correction. The Ratio of minimum to maximum transmission is 0.2495. The \l/2 correction factor is Not present. ; _exptl_crystal_colour colourless _exptl_crystal_colour_primary colourless _exptl_crystal_density_diffrn 2.636 _exptl_crystal_description block _exptl_crystal_F_000 1424 _exptl_crystal_preparation Luminescent _exptl_crystal_size_max 0.38 _exptl_crystal_size_mid 0.32 _exptl_crystal_size_min 0.29 _refine_diff_density_max 3.446 _refine_diff_density_min -2.590 _refine_diff_density_rms 0.326 _refine_ls_extinction_coef 0.00087(12) _refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^ _refine_ls_extinction_method 'SHELXL-2018/3 (Sheldrick 2018)' _refine_ls_goodness_of_fit_ref 1.053 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 167 _refine_ls_number_reflns 4527 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.053 _refine_ls_R_factor_all 0.0428 _refine_ls_R_factor_gt 0.0368 _refine_ls_shift/su_max 0.001 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'w=1/[\s^2^(Fo^2^)+(0.0663P)^2^] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.0963 _refine_ls_wR_factor_ref 0.0997 _reflns_Friedel_coverage 0.000 _reflns_number_gt 4033 _reflns_number_total 4527 _reflns_threshold_expression 'I > 2\s(I)' _cod_data_source_file d6dt00721j2.cif _cod_data_source_block mo_cxy2174_0ma _cod_database_code 7721091 _shelx_shelxl_version_number 2018/3 _shelx_space_group_comment ; The symmetry employed for this shelxl refinement is uniquely defined by the following loop, which should always be used as a source of symmetry information in preference to the above space-group names. They are only intended as comments. ; _shelx_estimated_absorpt_t_max 0.074 _shelx_estimated_absorpt_t_min 0.053 _olex2_refinement_description ; 1. Fixed Uiso At 1.2 times of: All N(H,H) groups At 1.5 times of: All C(H,H,H) groups 2.a X=CH2 refined with riding coordinates: N1(H1A,H1B), N2(H2A,H2B), N3(H3A,H3B), N4(H4A,H4B), N5(H5A,H5B), N6(H6A,H6B) 2.b Idealised Me refined as rotating group: C1(H1C,H1D,H1E), C3(H3C,H3D,H3E), C5(H5C,H5D,H5E) ; _shelx_res_file ; TITL mo_cxy2174_0ma_a.res in P2(1)/c mo_cxy2174_0ma.res created by SHELXL-2018/3 at 15:53:38 on 21-Apr-2026 CELL 0.71073 18.9112 9.0412 11.7688 90 100.974 90 ZERR 4 0.0013 0.0006 0.0008 0 0.003 0 LATT 1 SYMM -X,0.5+Y,0.5-Z SFAC C H Br N Pb UNIT 24 84 20 24 4 L.S. 4 PLAN 13 0 0 SIZE 0.32 0.29 0.38 TEMP -173.1(2) CONF MORE -1 BOND $H fmap 2 acta SHEL 20 0.77 REM REM REM WGHT 0.066300 EXTI 0.000869 FVAR 0.04550 PB1 5 0.228042 0.277967 0.314526 11.00000 0.00772 0.01621 = 0.01444 0.00025 0.00079 0.00031 BR1 3 0.117149 0.048777 0.245218 11.00000 0.01114 0.01897 = 0.02022 0.00026 0.00117 -0.00258 BR2 3 0.340284 0.035632 0.313970 11.00000 0.01052 0.01785 = 0.02200 0.00099 0.00242 0.00180 BR3 3 0.364857 0.468090 0.378050 11.00000 0.01188 0.02131 = 0.02647 -0.00217 0.00279 -0.00259 BR4 3 0.120756 0.518208 0.313134 11.00000 0.01269 0.01925 = 0.02044 -0.00152 -0.00144 0.00279 BR5 3 0.221727 0.317160 0.064472 11.00000 0.01505 0.02615 = 0.01506 0.00146 0.00208 0.00256 N1 4 0.009427 -0.184438 0.364191 11.00000 0.01981 0.01758 = 0.02175 0.00001 0.00477 -0.00524 AFIX 93 H1A 2 0.029365 -0.131759 0.315846 11.00000 -1.20000 H1B 2 -0.026798 -0.243841 0.337522 11.00000 -1.20000 AFIX 0 N2 4 0.086695 -0.088360 0.517676 11.00000 0.01013 0.02956 = 0.02032 -0.00269 -0.00046 -0.00495 AFIX 93 H2A 2 0.107461 -0.034650 0.470966 11.00000 -1.20000 H2B 2 0.102084 -0.083419 0.593005 11.00000 -1.20000 AFIX 0 C1 1 -0.001160 -0.265649 0.555572 11.00000 0.02149 0.02530 = 0.02021 0.00533 0.00666 -0.00044 AFIX 137 H1C 2 -0.045712 -0.309209 0.512368 11.00000 -1.50000 H1D 2 -0.012355 -0.202864 0.617689 11.00000 -1.50000 H1E 2 0.031769 -0.344691 0.589063 11.00000 -1.50000 AFIX 0 C2 1 0.033631 -0.174445 0.475670 11.00000 0.01750 0.01354 = 0.02352 -0.00008 0.01003 0.00414 N3 4 0.405754 0.241488 0.614332 11.00000 0.01749 0.04667 = 0.02569 -0.00005 0.00651 0.01353 AFIX 93 H3A 2 0.379223 0.226687 0.667128 11.00000 -1.20000 H3B 2 0.390113 0.299924 0.555077 11.00000 -1.20000 AFIX 0 N4 4 0.492430 0.089221 0.711826 11.00000 0.02055 0.03465 = 0.03311 0.00489 0.00985 0.00514 AFIX 93 H4A 2 0.466481 0.073404 0.765269 11.00000 -1.20000 H4B 2 0.534705 0.046323 0.717165 11.00000 -1.20000 AFIX 0 C3 1 0.511138 0.202300 0.533158 11.00000 0.01908 0.02027 = 0.02990 -0.00264 0.00624 -0.00019 AFIX 137 H3C 2 0.539136 0.293533 0.550137 11.00000 -1.50000 H3D 2 0.478909 0.211326 0.457716 11.00000 -1.50000 H3E 2 0.543942 0.118747 0.531532 11.00000 -1.50000 AFIX 0 C4 1 0.468003 0.177079 0.623866 11.00000 0.00621 0.02752 = 0.02544 -0.00345 0.00526 -0.00379 N5 4 0.237002 0.785632 0.429354 11.00000 0.01654 0.02239 = 0.02486 0.00377 0.00086 -0.00273 AFIX 93 H5A 2 0.199732 0.744130 0.384518 11.00000 -1.20000 H5B 2 0.257133 0.864581 0.405445 11.00000 -1.20000 AFIX 0 N6 4 0.233386 0.612654 0.568833 11.00000 0.01792 0.02983 = 0.02133 0.00360 0.00203 -0.00672 AFIX 93 H6A 2 0.196086 0.569612 0.525244 11.00000 -1.20000 H6B 2 0.251285 0.576821 0.637839 11.00000 -1.20000 AFIX 0 C5 1 0.325027 0.801418 0.604650 11.00000 0.02986 0.02364 = 0.03185 -0.00084 -0.00205 -0.00334 AFIX 137 H5C 2 0.337642 0.891631 0.566857 11.00000 -1.50000 H5D 2 0.366021 0.733142 0.616305 11.00000 -1.50000 H5E 2 0.313029 0.826675 0.679716 11.00000 -1.50000 AFIX 0 C6 1 0.262324 0.730304 0.530923 11.00000 0.01772 0.01454 = 0.02200 0.00424 -0.00110 0.00575 HKLF 4 REM mo_cxy2174_0ma_a.res in P2(1)/c REM wR2 = 0.099685, GooF = S = 1.05304, Restrained GooF = 1.05304 for all data REM R1 = 0.036774 for 4033 Fo > 4sig(Fo) and 0.042830 for all 4527 data REM 167 parameters refined using 0 restraints END WGHT 0.0663 0.0000 REM Highest difference peak 3.446, deepest hole -2.590, 1-sigma level 0.326 Q1 1 0.2726 0.2766 0.3310 11.00000 0.05 3.45 Q2 1 0.1851 0.2765 0.2976 11.00000 0.05 3.21 Q3 1 0.2282 0.3759 0.3049 11.00000 0.05 2.39 Q4 1 0.2288 0.1812 0.3219 11.00000 0.05 2.32 Q5 1 0.2291 0.1974 0.2797 11.00000 0.05 2.28 Q6 1 0.2271 0.3216 0.3807 11.00000 0.05 2.00 Q7 1 0.1645 0.5180 0.3304 11.00000 0.05 1.65 Q8 1 0.3224 0.4685 0.3651 11.00000 0.05 1.57 Q9 1 0.4053 0.4738 0.3953 11.00000 0.05 1.57 Q10 1 0.0741 0.0428 0.2234 11.00000 0.05 1.54 Q11 1 0.1599 0.0550 0.2639 11.00000 0.05 1.52 Q12 1 0.3018 0.0394 0.3027 11.00000 0.05 1.48 Q13 1 0.3399 -0.0618 0.3030 11.00000 0.05 1.44 ; _shelx_res_checksum 96575 _olex2_submission_special_instructions 'No special instructions were received' loop_ _space_group_symop_operation_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_site_symmetry_order _atom_site_calc_flag _atom_site_refinement_flags_posn _atom_site_refinement_flags_adp _atom_site_refinement_flags_occupancy _atom_site_disorder_assembly _atom_site_disorder_group Pb1 Pb 0.22804(2) 0.27797(2) 0.31453(2) 0.01296(10) Uani 1 1 d . . . . . Br1 Br 0.11715(3) 0.04878(6) 0.24522(5) 0.01701(15) Uani 1 1 d . . . . . Br2 Br 0.34028(3) 0.03563(6) 0.31397(5) 0.01688(15) Uani 1 1 d . . . . . Br3 Br 0.36486(3) 0.46809(7) 0.37805(5) 0.02000(15) Uani 1 1 d . . . . . Br4 Br 0.12076(3) 0.51821(6) 0.31313(5) 0.01807(15) Uani 1 1 d . . . . . Br5 Br 0.22173(3) 0.31716(7) 0.06447(5) 0.01886(15) Uani 1 1 d . . . . . N1 N 0.0094(3) -0.1844(6) 0.3642(4) 0.0196(11) Uani 1 1 d . . . . . H1A H 0.029365 -0.131759 0.315846 0.024 Uiso 1 1 calc R U . . . H1B H -0.026798 -0.243841 0.337522 0.024 Uiso 1 1 calc R U . . . N2 N 0.0867(3) -0.0884(6) 0.5177(5) 0.0204(11) Uani 1 1 d . . . . . H2A H 0.107461 -0.034650 0.470966 0.025 Uiso 1 1 calc R U . . . H2B H 0.102084 -0.083419 0.593005 0.025 Uiso 1 1 calc R U . . . C1 C -0.0012(4) -0.2656(7) 0.5556(6) 0.0220(14) Uani 1 1 d . . . . . H1C H -0.045712 -0.309209 0.512368 0.033 Uiso 1 1 calc R U . . . H1D H -0.012355 -0.202864 0.617689 0.033 Uiso 1 1 calc R U . . . H1E H 0.031769 -0.344691 0.589063 0.033 Uiso 1 1 calc R U . . . C2 C 0.0336(3) -0.1744(6) 0.4757(5) 0.0174(12) Uani 1 1 d . . . . . N3 N 0.4058(3) 0.2415(7) 0.6143(5) 0.0296(14) Uani 1 1 d . . . . . H3A H 0.379223 0.226687 0.667128 0.036 Uiso 1 1 calc R U . . . H3B H 0.390113 0.299924 0.555077 0.036 Uiso 1 1 calc R U . . . N4 N 0.4924(3) 0.0892(6) 0.7118(5) 0.0288(13) Uani 1 1 d . . . . . H4A H 0.466481 0.073404 0.765269 0.035 Uiso 1 1 calc R U . . . H4B H 0.534705 0.046323 0.717165 0.035 Uiso 1 1 calc R U . . . C3 C 0.5111(4) 0.2023(7) 0.5332(6) 0.0229(14) Uani 1 1 d . . . . . H3C H 0.539136 0.293533 0.550137 0.034 Uiso 1 1 calc R U . . . H3D H 0.478909 0.211326 0.457716 0.034 Uiso 1 1 calc R U . . . H3E H 0.543942 0.118747 0.531532 0.034 Uiso 1 1 calc R U . . . C4 C 0.4680(3) 0.1771(7) 0.6239(6) 0.0194(13) Uani 1 1 d . . . . . N5 N 0.2370(3) 0.7856(6) 0.4294(5) 0.0217(12) Uani 1 1 d . . . . . H5A H 0.199732 0.744130 0.384518 0.026 Uiso 1 1 calc R U . . . H5B H 0.257133 0.864581 0.405445 0.026 Uiso 1 1 calc R U . . . N6 N 0.2334(3) 0.6127(6) 0.5688(4) 0.0232(12) Uani 1 1 d . . . . . H6A H 0.196086 0.569612 0.525244 0.028 Uiso 1 1 calc R U . . . H6B H 0.251285 0.576821 0.637839 0.028 Uiso 1 1 calc R U . . . C5 C 0.3250(4) 0.8014(7) 0.6046(6) 0.0295(16) Uani 1 1 d . . . . . H5C H 0.337642 0.891631 0.566857 0.044 Uiso 1 1 calc R U . . . H5D H 0.366021 0.733142 0.616305 0.044 Uiso 1 1 calc R U . . . H5E H 0.313029 0.826675 0.679716 0.044 Uiso 1 1 calc R U . . . C6 C 0.2623(4) 0.7303(6) 0.5309(6) 0.0187(13) Uani 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 Pb1 0.00772(15) 0.01621(15) 0.01444(14) 0.00025(8) 0.00079(9) 0.00031(7) Br1 0.0111(3) 0.0190(3) 0.0202(3) 0.0003(2) 0.0012(2) -0.0026(2) Br2 0.0105(3) 0.0179(3) 0.0220(3) 0.0010(2) 0.0024(2) 0.0018(2) Br3 0.0119(3) 0.0213(3) 0.0265(3) -0.0022(2) 0.0028(3) -0.0026(2) Br4 0.0127(3) 0.0193(3) 0.0204(3) -0.0015(2) -0.0014(2) 0.0028(2) Br5 0.0150(3) 0.0261(3) 0.0151(3) 0.0015(2) 0.0021(2) 0.0026(2) N1 0.020(3) 0.018(2) 0.022(3) 0.000(2) 0.005(2) -0.005(2) N2 0.010(3) 0.030(3) 0.020(3) -0.003(2) 0.000(2) -0.005(2) C1 0.021(4) 0.025(3) 0.020(3) 0.005(3) 0.007(3) 0.000(3) C2 0.017(3) 0.014(3) 0.024(3) 0.000(2) 0.010(3) 0.004(2) N3 0.017(3) 0.047(4) 0.026(3) 0.000(3) 0.007(3) 0.014(3) N4 0.021(3) 0.035(3) 0.033(3) 0.005(3) 0.010(3) 0.005(3) C3 0.019(4) 0.020(3) 0.030(3) -0.003(3) 0.006(3) 0.000(3) C4 0.006(3) 0.028(3) 0.025(3) -0.003(3) 0.005(3) -0.004(2) N5 0.017(3) 0.022(3) 0.025(3) 0.004(2) 0.001(2) -0.003(2) N6 0.018(3) 0.030(3) 0.021(3) 0.004(2) 0.002(2) -0.007(2) C5 0.030(4) 0.024(3) 0.032(4) -0.001(3) -0.002(3) -0.003(3) C6 0.018(4) 0.015(3) 0.022(3) 0.004(2) -0.001(3) 0.006(2) 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' Pb Pb -3.3944 10.1111 '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 _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag Br1 Pb1 Br2 87.320(18) . . ? Br1 Pb1 Br3 168.474(19) . . ? Br1 Pb1 Br4 93.626(18) . . ? Br1 Pb1 Br5 85.033(17) . 4_566 ? Br2 Pb1 Br3 81.291(17) . . ? Br2 Pb1 Br5 87.428(17) . 4_566 ? Br3 Pb1 Br5 96.160(18) . 4_566 ? Br4 Pb1 Br2 178.815(18) . . ? Br4 Pb1 Br3 97.741(18) . . ? Br4 Pb1 Br5 93.364(18) . 4_566 ? Br5 Pb1 Br1 85.224(18) . . ? Br5 Pb1 Br2 88.863(18) . . ? Br5 Pb1 Br3 92.743(18) . . ? Br5 Pb1 Br4 90.503(18) . . ? Br5 Pb1 Br5 169.724(14) . 4_566 ? Pb1 Br5 Pb1 156.48(2) . 4_565 ? H1A N1 H1B 120.0 . . ? C2 N1 H1A 120.0 . . ? C2 N1 H1B 120.0 . . ? H2A N2 H2B 120.0 . . ? C2 N2 H2A 120.0 . . ? C2 N2 H2B 120.0 . . ? H1C C1 H1D 109.5 . . ? H1C C1 H1E 109.5 . . ? H1D C1 H1E 109.5 . . ? C2 C1 H1C 109.5 . . ? C2 C1 H1D 109.5 . . ? C2 C1 H1E 109.5 . . ? N1 C2 C1 118.8(6) . . ? N2 C2 N1 121.6(6) . . ? N2 C2 C1 119.7(6) . . ? H3A N3 H3B 120.0 . . ? C4 N3 H3A 120.0 . . ? C4 N3 H3B 120.0 . . ? H4A N4 H4B 120.0 . . ? C4 N4 H4A 120.0 . . ? C4 N4 H4B 120.0 . . ? H3C C3 H3D 109.5 . . ? H3C C3 H3E 109.5 . . ? H3D C3 H3E 109.5 . . ? C4 C3 H3C 109.5 . . ? C4 C3 H3D 109.5 . . ? C4 C3 H3E 109.5 . . ? N3 C4 N4 121.0(6) . . ? N3 C4 C3 118.9(6) . . ? N4 C4 C3 120.1(6) . . ? H5A N5 H5B 120.0 . . ? C6 N5 H5A 120.0 . . ? C6 N5 H5B 120.0 . . ? H6A N6 H6B 120.0 . . ? C6 N6 H6A 120.0 . . ? C6 N6 H6B 120.0 . . ? H5C C5 H5D 109.5 . . ? H5C C5 H5E 109.5 . . ? H5D C5 H5E 109.5 . . ? C6 C5 H5C 109.5 . . ? C6 C5 H5D 109.5 . . ? C6 C5 H5E 109.5 . . ? N5 C6 N6 121.3(6) . . ? N5 C6 C5 119.1(6) . . ? N6 C6 C5 119.6(6) . . ? 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 Pb1 Br1 2.9506(6) . ? Pb1 Br2 3.0514(6) . ? Pb1 Br3 3.0776(7) . ? Pb1 Br4 2.9702(6) . ? Pb1 Br5 3.0888(6) 4_566 ? Pb1 Br5 2.9439(6) . ? N1 H1A 0.8800 . ? N1 H1B 0.8800 . ? N1 C2 1.308(8) . ? N2 H2A 0.8800 . ? N2 H2B 0.8800 . ? N2 C2 1.292(8) . ? C1 H1C 0.9800 . ? C1 H1D 0.9800 . ? C1 H1E 0.9800 . ? C1 C2 1.494(8) . ? N3 H3A 0.8800 . ? N3 H3B 0.8800 . ? N3 C4 1.299(8) . ? N4 H4A 0.8800 . ? N4 H4B 0.8800 . ? N4 C4 1.317(8) . ? C3 H3C 0.9800 . ? C3 H3D 0.9800 . ? C3 H3E 0.9800 . ? C3 C4 1.479(9) . ? N5 H5A 0.8800 . ? N5 H5B 0.8800 . ? N5 C6 1.300(8) . ? N6 H6A 0.8800 . ? N6 H6B 0.8800 . ? N6 C6 1.313(8) . ? C5 H5C 0.9800 . ? C5 H5D 0.9800 . ? C5 H5E 0.9800 . ? C5 C6 1.477(9) . ?