Copper‒lead selenite bromides: a new large family of compounds partly having Cu^2+^ substructures derivable from kagome nets
Siidra, Oleg I.; Kozin, Michael S.; Depmeier, Wulf; Kayukov, Roman A.; Kovrugin, Vadim M.; Acta Crystallographica Section B 74 (2018) 712–724; doi:10.1107/S2052520618016542

data_2108348
_publ_section_title
;
 Copper--lead selenite bromides: a new large family of compounds partly
 having Cu^2+^ substructures derivable from kagome nets
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              712
_journal_page_last               724
_journal_paper_doi               10.1107/S2052520618016542
_journal_volume                  74
_journal_year                    2018
_chemical_formula_sum            'Br22.16 Cu28 O64 Pb17.06 Se16'
_chemical_formula_weight         9371.95
_space_group_crystal_system      orthorhombic
_space_group_IT_number           65
_space_group_name_Hall           '-C 2 2'
_space_group_name_H-M_alt        'C m m m'
_symmetry_space_group_name_Hall  '-C 2 2'
_symmetry_space_group_name_H-M   'C m m m'
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   23.943(12)
_cell_length_b                   20.268(10)
_cell_length_c                   6.313(4)
_cell_measurement_reflns_used    740
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      21.382
_cell_measurement_theta_min      2.010
_cell_volume                     3064(3)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Bruker Apex 2 Duo'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0976
_diffrn_reflns_av_unetI/netI     0.0549
_diffrn_reflns_Laue_measured_fraction_full 0.980
_diffrn_reflns_Laue_measured_fraction_max 0.980
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -3
_diffrn_reflns_number            6846
_diffrn_reflns_point_group_measured_fraction_full 0.980
_diffrn_reflns_point_group_measured_fraction_max 0.980
_diffrn_reflns_theta_full        21.382
_diffrn_reflns_theta_max         21.382
_diffrn_reflns_theta_min         2.010
_exptl_absorpt_coefficient_mu    40.126
_exptl_crystal_density_diffrn    5.080
_exptl_crystal_description       plate
_exptl_crystal_F_000             4043
_refine_diff_density_max         4.131
_refine_diff_density_min         -2.796
_refine_diff_density_rms         0.634
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.198
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1013
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.194
_refine_ls_R_factor_all          0.0963
_refine_ls_R_factor_gt           0.0726
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1072P)^2^+857.5312P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2085
_refine_ls_wR_factor_ref         0.2308
_reflns_Friedel_coverage         0.000
_reflns_number_gt                764
_reflns_number_total             1013
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ps5074sup1.cif
_cod_data_source_block           CuPbOXO4
_cod_database_code               2108348
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              59230
_shelx_hkl_checksum              9384
_cod_database_fobs_code 2108348