data_global _amcsd_formula_title 'Ca H2 O12 P4' loop_ _publ_author_name 'Averbuch-Pouchot M' _journal_name_full 'Zeitschrift fur Anorganische und Allgemeine Chemie' _journal_volume 621 _journal_year 1995 _journal_page_first 506 _journal_page_last 509 _publ_section_title ; Preparation and crystal structure of an acidic long-chain polyphosphate: Ca H2 (P O3)4 _cod_database_code 1008730 ; _database_code_amcsd 0016611 _chemical_formula_sum 'Ca P4 O12 H2' _cell_length_a 5.686 _cell_length_b 9.676 _cell_length_c 8.844 _cell_angle_alpha 90 _cell_angle_beta 92.35 _cell_angle_gamma 90 _cell_volume 486.168 _exptl_crystal_density_diffrn 2.445 _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 Ca1 0.00000 0.00000 0.00000 P1 0.71337 0.21375 0.70018 P2 0.38759 0.22230 0.44098 O1 0.86240 0.19127 0.11754 O2 0.81390 0.41292 0.27346 O3 0.57950 0.19490 0.32061 O4 0.49840 0.84314 0.40931 O5 0.18010 0.12789 0.40030 O6 0.32800 0.36819 0.45770 H1 0.81200 0.55900 0.15500