data_global _amcsd_formula_title 'Be K O4 P' loop_ _publ_author_name 'Masse R' 'Durif A' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 73 _journal_year 1988 _journal_page_first 468 _journal_page_last 472 _publ_section_title ; Contribution to the Crystal Chemistry of M(I) M(II) P O4 Monophosphates (M(I) = K, Rb, Cs; M(II) = Be) _cod_database_code 1007182 ; _database_code_amcsd 0013613 _chemical_formula_sum 'K P O4 Be' _cell_length_a 8.506 _cell_length_b 4.937 _cell_length_c 8.344 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 350.399 _exptl_crystal_density_diffrn 2.712 _symmetry_space_group_name_H-M 'P c 21 n' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-x,y,1/2+z' '1/2+x,1/2+y,1/2-z' '-x,1/2+y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z K1 0.20920 0.25000 -0.00200 P1 0.41850 0.73610 0.19100 O1 0.45890 0.02300 0.25190 O2 0.45280 0.03900 0.75160 O3 0.40720 0.73600 0.00900 O4 0.26140 0.64500 0.26000 Be1 0.08910 0.75600 0.31690