data_global _amcsd_formula_title 'H8 K4 O16 P4' loop_ _publ_author_name 'Averbuch-Pouchot M' 'Durif A' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 41 _journal_year 1985 _journal_page_first 1564 _journal_page_last 1566 _publ_section_title ; Structure of tetrapotassium tetrametaphosphate tetrahydrate _cod_database_code 1007148 ; _database_code_amcsd 0010015 _chemical_formula_sum 'K P O4 H2' _cell_length_a 9.061 _cell_length_b 9.061 _cell_length_c 10.284 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 844.334 _exptl_crystal_density_diffrn 2.141 _symmetry_space_group_name_H-M 'I -4' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z K1 0.45927 0.24440 0.13320 P1 0.07129 0.21842 -0.00050 O1 0.84060 0.72400 0.11080 O2 0.53670 0.81800 0.38950 O3 0.92430 0.14970 0.06250 O4 0.04880 0.20780 0.36130 H1 0.96600 0.26300 0.37200 H2 0.10600 0.23500 0.28500