data_global _amcsd_formula_title 'Ba2 Ce0.15 Cu Hg0.85 O4.15' loop_ _publ_author_name 'Letouze F' 'Huve M' 'Martin C' 'Maignan A' 'Michel C' 'Hervieu M' 'Raveau B' _journal_name_full 'Materials Research Bulletin' _journal_volume 31 _journal_year 1996 _journal_page_first 657 _journal_page_last 663 _publ_section_title ; Introduction of lanthanide on the mercury site of the HgBa2CuO4 superconductor _cod_database_code 1001755 ; _database_code_amcsd 0014374 _chemical_formula_sum '(Hg.85 Ce.15) Ba2 Cu O4.15' _cell_length_a 3.8801 _cell_length_b 3.8801 _cell_length_c 9.495 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 142.949 _exptl_crystal_density_diffrn 6.925 _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 Hg1 0.00000 0.00000 0.00000 0.85000 Ce1 0.00000 0.00000 0.00000 0.15000 Ba1 0.50000 0.50000 0.29850 1.00000 Cu1 0.00000 0.00000 0.50000 1.00000 O1 0.50000 0.00000 0.50000 1.00000 O2 0.00000 0.00000 0.20200 1.00000 O3 0.50000 0.50000 0.00000 0.15000