data_global _amcsd_formula_title 'F2 H5 N' loop_ _publ_author_name 'Rogers M' 'Helmholz L' _journal_name_full 'Journal of the American Chemical Society' _journal_volume 62 _journal_year 1940 _journal_page_first 1533 _journal_page_last 1536 _publ_section_title ; A Redetermination of the Parameters in Ammonium Bifluoride _cod_database_code 1010390 ; _database_code_amcsd 0017315 _chemical_formula_sum 'N F2 H' _cell_length_a 8.426 _cell_length_b 8.18 _cell_length_c 3.69 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 254.332 _exptl_crystal_density_diffrn 1.384 _symmetry_space_group_name_H-M 'P m a n' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,-z' '1/2-x,1/2-y,z' '-x,y,z' 'x,-y,-z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z N1 0.25000 0.25000 0.46000 F1 0.13700 0.00000 0.00000 F2 0.00000 0.37100 0.86900 H1 0.00000 0.00000 0.00000 H2 0.50000 0.00000 0.00000