data_global _amcsd_formula_title 'Pb4Sb4Se10' loop_ _publ_author_name 'Skowron A' 'Brown I D' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 46 _journal_year 1990 _journal_page_first 2287 _journal_page_last 2291 _publ_section_title ; Structure of antimony lead selenide, Pb4Sb4Se10, a selenium analogue of cosalite ; _database_code_amcsd 0010214 _chemical_formula_sum 'Sb2.21 Pb1.79 Se5' _cell_length_a 24.591 _cell_length_b 19.757 _cell_length_c 4.166 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2024.028 _exptl_crystal_density_diffrn 6.791 _symmetry_space_group_name_H-M 'P n a m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv SbM1 0.43590 0.53890 0.75000 0.82000 0.02700 PbM1 0.43590 0.53890 0.75000 0.18000 0.02700 PbM2 0.29540 0.39100 0.75000 1.00000 0.03300 PbM3 0.12730 0.29760 0.75000 1.00000 0.03100 SbM4 0.04340 0.77100 0.25000 0.32000 0.02100 PbM4 0.04340 0.77100 0.25000 0.68000 0.02100 SbM5 0.17410 0.68720 0.75000 0.88000 0.02300 PbM5 0.17410 0.68720 0.75000 0.12000 0.02300 SbM6 0.00990 0.59120 0.75000 0.60000 0.02800 PbM6 0.00990 0.59120 0.75000 0.40000 0.02800 SbM7 0.15600 0.48410 0.25000 0.88000 0.02400 PbM7 0.15600 0.48410 0.25000 0.12000 0.02400 SbM8 0.30340 0.59290 0.25000 0.92000 0.02200 PbM8 0.30340 0.59290 0.25000 0.08000 0.02200 Se1 0.36410 0.65480 0.75000 1.00000 0.03600 Se2 0.23100 0.52960 0.75000 1.00000 0.02200 Se3 0.08210 0.43800 0.75000 1.00000 0.01800 Se4 0.08550 0.62750 0.25000 1.00000 0.02100 Se5 0.12490 0.80690 0.75000 1.00000 0.02400 Se6 0.03460 0.28330 0.25000 1.00000 0.02600 Se7 0.20430 0.36280 0.25000 1.00000 0.02900 Se8 0.36140 0.47740 0.25000 1.00000 0.02600 Se9 0.50020 0.58860 0.25000 1.00000 0.02600 Se10 0.23900 0.72890 0.25000 1.00000 0.03400