data_global _amcsd_formula_title 'Cr2 Cu H2 K2 O14 P2' loop_ _publ_author_name 'Coing-Boyat J' 'Durif A' 'Guitel J' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 30 _journal_year 1979 _journal_page_first 329 _journal_page_last 334 _publ_section_title ; Structure cristalline d'un phosphochromate acide de cuivre potassium: Cu K2 H2 (P Cr O7)2 _cod_database_code 1007042 ; _database_code_amcsd 0013372 _chemical_formula_sum 'Cu K2 Cr2 P2 O14' _cell_length_a 9.559 _cell_length_b 7.196 _cell_length_c 8.983 _cell_angle_alpha 90 _cell_angle_beta 93.73 _cell_angle_gamma 90 _cell_volume 616.601 _exptl_crystal_density_diffrn 2.864 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Cu1 0.00000 0.00000 0.50000 K1 0.69464 0.12278 0.17615 Cr1 0.34715 0.11598 0.39091 P1 0.08815 0.13012 0.18629 O1 0.21490 0.23360 0.26430 O2 0.45230 0.00100 0.29370 O3 0.73730 0.02740 0.50730 O4 0.42720 0.27800 0.48430 O5 0.84430 0.44780 0.37570 O6 0.97850 0.07990 0.29320 O7 0.02440 0.24000 0.05500