data_global _amcsd_formula_title 'Na2 O3 S' loop_ _publ_author_name 'Zachariasen W' 'Buckley H' _journal_name_full 'Physical Review' _journal_volume 37 _journal_year 1931 _journal_page_first 1295 _journal_page_last 1305 _publ_section_title ; The Crystal Lattice of Anhydrous Sodium Sulphite, Na2 S O3 _cod_database_code 1010523 ; _database_code_amcsd 0017434 _chemical_formula_sum 'Na2 S O3' _cell_length_a 5.441 _cell_length_b 5.441 _cell_length_c 6.133 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 157.239 _exptl_crystal_density_diffrn 2.662 _symmetry_space_group_name_H-M 'P -3' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,-x+y,-z' '-x+y,-x,z' '-x,-y,-z' '-y,x-y,z' 'x-y,x,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na1 0.00000 0.00000 0.00000 Na2 0.00000 0.00000 0.50000 Na3 0.33333 0.66667 0.66667 S1 0.33333 0.66667 0.16667 O1 0.13900 0.40300 0.25000