data_global _amcsd_formula_title 'Cu2 O10 Pb0.5 Sr4 Tl0.5' loop_ _publ_author_name 'Huve M' 'Michel C' 'Maignan A' 'Hervieu M' 'Martin C' 'Raveau B' _journal_name_full 'Physica C' _journal_volume 205 _journal_year 1993 _journal_page_first 219 _journal_page_last 224 _publ_section_title ; A 70 K superconductor. The oxycarbonate Tl0.5Pb0.5Sr4Cu2(CO3)O7 _cod_database_code 1001579 ; _database_code_amcsd 0015040 _chemical_formula_sum 'Tl.5 Pb.5 Sr4 Cu2 C O10' _cell_length_a 3.8244 _cell_length_b 3.8244 _cell_length_c 16.516 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 241.564 _exptl_crystal_density_diffrn 5.880 _symmetry_space_group_name_H-M 'P 4/m m m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,-x,z' 'y,x,-z' 'y,-x,-z' '-y,x,z' 'x,-y,z' '-x,y,-z' 'x,y,-z' '-x,-y,z' 'y,x,z' '-y,-x,-z' '-y,x,-z' 'y,-x,z' '-x,y,z' 'x,-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Tl1 0.08300 0.00000 0.00000 0.12500 Pb1 0.08300 0.00000 0.00000 0.12500 Sr1 0.50000 0.50000 0.15960 1.00000 Sr2 0.50000 0.50000 0.37250 1.00000 Cu1 0.00000 0.00000 0.26540 1.00000 C1 0.00000 0.00000 0.50000 1.00000 O1 0.67000 0.50000 0.00000 0.25000 O2 0.00000 0.00000 0.12100 1.00000 O3 0.16200 0.00000 0.41400 0.25000 O4 0.31600 0.00000 0.50000 0.25000 O5 0.50000 0.00000 0.27700 1.00000