data_global _amcsd_formula_title 'Ca Na2 O12 P4' loop_ _publ_author_name 'Averbuch-Pouchot M' _journal_name_full 'European Journal of Solid State and Inorganic Chemistry' _journal_volume 33 _journal_year 1996 _journal_page_first 15 _journal_page_last 18 _publ_section_title ; Ca Na2 P4 O12, a new compound in the Ca (P O3)2 - Na P O3 system _cod_database_code 1008729 ; _database_code_amcsd 0016610 _chemical_formula_sum 'Ca2 Na P8 O16' _cell_length_a 9.568 _cell_length_b 9.568 _cell_length_c 4.909 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 449.402 _exptl_crystal_density_diffrn 4.485 _symmetry_space_group_name_H-M 'P 4/n b m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-y,1/2-x,z' 'y,x,-z' '1/2+y,1/2-x,-z' '-y,x,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2+x,1/2+y,-z' '-x,-y,z' '1/2+y,1/2+x,z' '-y,-x,-z' '1/2-y,1/2+x,-z' 'y,-x,z' '1/2-x,1/2+y,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 Ca1 0.25000 0.25000 0.50000 Na1 0.00000 0.00000 0.50000 P1 0.53250 0.25000 0.00000 O1 0.63710 0.36290 0.12860 O2 0.19020 0.04340 0.23260