data_global _amcsd_formula_title 'Ba2 Ca Cr2 Cu F14' loop_ _publ_author_name 'Qiang X' 'Darriet J' 'Tressaud A' 'Soubeyroux J' 'Hagenmuller P' _journal_name_full 'Materials Research Bulletin' _journal_volume 23 _journal_year 1988 _journal_page_first 637 _journal_page_last 645 _publ_section_title ; New heteronuclear trimers in fluorides with Usovite-type structure _cod_database_code 1008380 ; _database_code_amcsd 0016289 _chemical_formula_sum 'Ba2 Cr2 Ca Cu F14' _cell_length_a 13.724 _cell_length_b 5.314 _cell_length_c 14.702 _cell_angle_alpha 90 _cell_angle_beta 91.47 _cell_angle_gamma 90 _cell_volume 1071.854 _exptl_crystal_density_diffrn 4.637 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ba1 0.19200 -0.06400 0.11800 Cr1 0.37200 0.48000 0.12500 Ca1 0.00000 0.43600 0.25000 Cu1 0.00000 0.50000 0.00000 F1 0.15800 0.19800 0.27200 F2 0.41300 0.29200 0.02100 F3 0.37800 0.20000 0.20900 F4 0.36900 0.22700 0.54700 F5 0.50400 0.41700 0.65200 F6 0.24300 0.41800 0.09100 F7 0.44400 0.04900 0.38400