data_global _amcsd_formula_title 'Cu2 O6.6 Pb0.5 Sr2.5 Y' loop_ _publ_author_name 'Rouillon T' 'Provost J' 'Hervieu M' 'Groult D' 'Michel C' 'Raveau B' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 84 _journal_year 1990 _journal_page_first 375 _journal_page_last 385 _publ_section_title ; The solid solution Pb0.5Sr2.5Y1-xCaxCu2O7-d: Superconductivity and structure _cod_database_code 1001442 ; _database_code_amcsd 0013674 _chemical_formula_sum 'Pb.5 Sr2.5 Y Cu2 O6.6' _cell_length_a 3.8253 _cell_length_b 3.8253 _cell_length_c 11.891 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 174.000 _exptl_crystal_density_diffrn 6.148 _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 Pb1 0.50000 0.50000 0.50000 0.50000 Sr1 0.50000 0.50000 0.50000 0.50000 Sr2 0.00000 0.00000 0.28910 1.00000 Y1 0.00000 0.00000 0.00000 1.00000 Cu1 0.50000 0.50000 0.13910 1.00000 O1 0.00000 0.50000 0.12350 1.00000 O2 0.50000 0.50000 0.30800 0.80000 O3 0.00000 0.00000 0.50000 1.00000