data_global _amcsd_formula_title 'H6 N O2 P' loop_ _publ_author_name 'Zachariasen W' 'Mooney R' _journal_name_full 'Journal of Chemical Physics' _journal_volume 2 _journal_year 1934 _journal_page_first 34 _journal_page_last 37 _publ_section_title ; The Structure of the Hypophosphite Group as Determined from the Crystal Lattice of Ammonium Hypophosphite _cod_database_code 1010304 ; _database_code_amcsd 0017230 _chemical_formula_sum 'N P O2 H2' _cell_length_a 3.98 _cell_length_b 7.57 _cell_length_c 11.47 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 345.575 _exptl_crystal_density_diffrn 1.518 _symmetry_space_group_name_H-M 'A b m m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' 'x,1/2+y,-z' 'x,+y,1/2-z' '-x,1/2-y,z' '-x,-y,1/2+z' 'x,-y,z' 'x,1/2-y,1/2+z' '-x,y,-z' '-x,1/2+y,1/2-z' '-x,1/2+y,z' '-x,+y,1/2+z' 'x,1/2-y,-z' 'x,-y,1/2-z' '-x,-y,-z' '-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z N1 0.00000 0.25000 0.00000 P1 0.54200 0.00000 0.25000 O1 0.34700 0.00000 0.13600 H1 -0.80600 0.35800 0.25000