data_global _amcsd_formula_title 'Bi1.5 Cu2 O11 Pb0.5 Sr3.5' loop_ _publ_author_name 'Pelloquin D' 'Caldes M' 'Michel C' 'Maignan A' 'Hervieu M' 'Raveau B' _journal_name_full 'Physica C' _journal_volume 217 _journal_year 1993 _journal_page_first 27 _journal_page_last 33 _publ_section_title ; Lead substitution in the 30K-superconductor Bi2Sr4-yCu2CO3O8-d _cod_database_code 1001577 ; _database_code_amcsd 0015059 _chemical_formula_sum '(Bi1.5 Pb.5) Sr3.5 Cu2 C O11' _cell_length_a 5.468 _cell_length_b 5.427 _cell_length_c 39.530 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1173.046 _exptl_crystal_density_diffrn 5.882 _symmetry_space_group_name_H-M 'A b m m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' 'x,1/2+y,-z' 'x,+y,1/2-z' '-x,1/2-y,z' '-x,-y,1/2+z' 'x,-y,z' 'x,1/2-y,1/2+z' '-x,y,-z' '-x,1/2+y,1/2-z' '-x,1/2+y,z' '-x,+y,1/2+z' 'x,1/2-y,-z' 'x,-y,1/2-z' '-x,-y,-z' '-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Bi1 0.25000 0.00000 0.03830 0.75000 Pb1 0.25000 0.00000 0.03830 0.25000 Sr1 0.75000 0.00000 0.10730 0.75000 Sr2 0.75000 0.00000 0.19700 1.00000 Cu1 0.25000 0.00000 0.15460 1.00000 C1 0.25000 0.00000 0.25000 1.00000 O1 0.66900 0.00000 0.03770 1.00000 O2 0.19600 0.00000 0.09330 1.00000 O3 0.16800 0.00000 0.21840 1.00000 O4 0.00000 0.25000 0.15390 1.00000 O5 0.50000 0.25000 0.15390 1.00000 O6 0.00000 0.00000 0.25000 0.50000 O7 0.50000 0.00000 0.25000 0.50000