data_global _amcsd_formula_title 'Cl Na O4' loop_ _publ_author_name 'Zachariasen W' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 73 _journal_year 1930 _journal_page_first 141 _journal_page_last 146 _publ_section_title ; The Crystal Structure of Sodium Perchlorate, Na Cl O4 _cod_database_code 1010214 ; _database_code_amcsd 0017150 _chemical_formula_sum 'Na Cl O4' _cell_length_a 6.48 _cell_length_b 7.06 _cell_length_c 7.08 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 323.901 _exptl_crystal_density_diffrn 2.511 _symmetry_space_group_name_H-M 'B b m m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,y,1/2+z' '-x,1/2+y,z' '1/2-x,1/2+y,1/2+z' 'x,1/2-y,-z' '1/2+x,1/2-y,1/2-z' 'x,y,-z' '1/2+x,y,1/2-z' '-x,-y,z' '1/2-x,-y,1/2+z' 'x,1/2-y,z' '1/2+x,1/2-y,1/2+z' '-x,1/2+y,-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na1 0.65000 0.25000 0.00000 Cl1 0.15000 0.25000 0.00000 O1 0.31000 0.08000 0.00000 O2 0.00000 0.25000 0.17000