data_global _amcsd_formula_title 'Bi2 Cu2 O11 Sr4' loop_ _publ_author_name 'Pelloquin D' 'Caldes M' 'Maignan A' 'Michel C' 'Hervieu M' 'Raveau B' _journal_name_full 'Physica C' _journal_volume 208 _journal_year 1993 _journal_page_first 121 _journal_page_last 129 _publ_section_title ; The bismuth oxycarbonate Bi2Sr4Cu2CO3O8. A new superconductor with a Tc of 30 K _cod_database_code 1001583 ; _database_code_amcsd 0015044 _chemical_formula_sum 'Bi2 Sr4 Cu2 C O11' _cell_length_a 5.466 _cell_length_b 5.460 _cell_length_c 39.500 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1178.852 _exptl_crystal_density_diffrn 6.105 _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 0.04000 1.00000 Sr1 0.75000 0.00000 0.10900 1.00000 Sr2 0.75000 0.00000 0.19700 1.00000 Cu1 0.25000 0.00000 0.15500 1.00000 C1 0.25000 0.00000 0.25000 1.00000 O1 0.75000 0.00000 0.04000 1.00000 O2 0.25000 0.00000 0.10000 1.00000 O3 0.00000 0.25000 0.15000 1.00000 O4 0.50000 0.25000 0.15000 1.00000 O5 0.25000 0.00000 0.22000 0.50000 O6 0.00000 0.25000 0.25000 0.50000 O7 0.50000 0.25000 0.25000 0.50000 O8 0.08200 0.16800 0.25000 0.50000