data_global _amcsd_formula_title 'H2 K O4 P' loop_ _publ_author_name 'Hassel O' _journal_name_full 'Zeitschrift fur Elektrochemie' _journal_volume 31 _journal_year 1925 _journal_page_first 523 _journal_page_last 529 _publ_section_title ; Ueber die Kristallstruktur des primaeren Kaliumphosphats K H2 P O4 und isomorpher Salze. _cod_database_code 1010576 ; _database_code_amcsd 0017460 _chemical_formula_sum 'P K' _cell_length_a 7.42 _cell_length_b 7.42 _cell_length_c 6.97 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 383.743 _exptl_crystal_density_diffrn 1.213 _symmetry_space_group_name_H-M 'I -4 2 d' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/2-y,-x,3/4+z' '-y,1/2-x,1/4+z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-x,1/2+y,1/4-z' '1/2-x,+y,3/4-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' '1/2+y,x,3/4+z' '+y,1/2+x,1/4+z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'x,1/2-y,1/4-z' '1/2+x,-y,3/4-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z P1 0.00000 0.00000 0.00000 K1 0.00000 0.00000 0.50000