data_global _chemical_name_mineral 'Nitratine' loop_ _publ_author_name 'Paul G L' 'Pryor A W' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 28 _journal_year 1972 _journal_page_first 2700 _journal_page_last 2702 _publ_section_title ; The study of sodium nitrate by neutron diffraction Sample: T = 268 C, refined incorporating curvilinear motion of O atom ; _database_code_amcsd 0009453 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Na N O3' _cell_length_a 5.082 _cell_length_b 5.082 _cell_length_c 17.31 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 387.166 _exptl_crystal_density_diffrn 2.187 _symmetry_space_group_name_H-M 'R -3 c' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'x,x-y,1/2+z' '2/3+x,1/3+x-y,5/6+z' '1/3+x,2/3+x-y,1/6+z' 'y,x,1/2-z' '2/3+y,1/3+x,5/6-z' '1/3+y,2/3+x,1/6-z' '-x+y,y,1/2+z' '2/3-x+y,1/3+y,5/6+z' '1/3-x+y,2/3+y,1/6+z' '-x,-x+y,1/2-z' '2/3-x,1/3-x+y,5/6-z' '1/3-x,2/3-x+y,1/6-z' '-y,-x,1/2+z' '2/3-y,1/3-x,5/6+z' '1/3-y,2/3-x,1/6+z' 'x-y,-y,1/2-z' '2/3+x-y,1/3-y,5/6-z' '1/3+x-y,2/3-y,1/6-z' 'y,-x+y,-z' '2/3+y,1/3-x+y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' '-x,-y,-z' '2/3-x,1/3-y,1/3-z' '1/3-x,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' 'x-y,x,-z' '2/3+x-y,1/3+x,1/3-z' '1/3+x-y,2/3+x,2/3-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Na 0.00000 0.00000 0.00000 1.00000 N 0.00000 0.00000 0.25000 1.00000 O1 0.24770 0.00000 0.25000 0.79400 O2 -0.24770 0.00000 0.25000 0.20600