data_global _amcsd_formula_title 'F3 H4 Mn N' loop_ _publ_author_name 'Laguna M' 'Sanjuan M' 'Orera V' 'Rubin J' 'Palacios E' 'Pique M' 'Bartolome J' 'Berar J' _journal_name_full 'Journal of Physics: Condensed Matter' _journal_volume 5 _journal_year 1993 _journal_page_first 283 _journal_page_last 300 _publ_section_title ; X-ray and raman study of the low temperature NH4MnF3 structure;evidence of librational motion of the NH4^+^ ion _cod_database_code 1008535 ; _database_code_amcsd 0016428 _chemical_formula_sum 'N Mn F3' _cell_length_a 5.952 _cell_length_b 8.543 _cell_length_c 5.949 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 302.494 _exptl_crystal_density_diffrn 2.765 _symmetry_space_group_name_H-M 'P n m a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-x,1/2+y,-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,y,1/2-z' '1/2-x,-y,1/2+z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z N1 0.50000 0.25000 0.00000 Mn1 0.00000 0.00000 0.00000 F1 0.27800 0.01400 0.76100 F2 0.00000 0.25000 0.01900