data_global _amcsd_formula_title 'Fe Na O2' loop_ _publ_author_name 'Goldsztaub M' _journal_name_full 'Bulletin de la Societe Francaise de Mineralogie' _journal_volume 58 _journal_year 1935 _journal_page_first 6 _journal_page_last 6 _publ_section_title ; Etude de quelques derives de l'oxyde ferrique (FeO*OH, FeO^2^Na, FeOCl) determination de leurs structures. _cod_database_code 1010644 ; _database_code_amcsd 0017525 _chemical_formula_sum 'Na Fe O2' _cell_length_a 5.59 _cell_length_b 5.59 _cell_length_c 5.59 _cell_angle_alpha 31.33 _cell_angle_beta 31.33 _cell_angle_gamma 31.33 _cell_volume 41.917 _exptl_crystal_density_diffrn 4.391 _symmetry_space_group_name_H-M 'R -3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-z,-y' '-z,-x,-y' 'y,x,z' 'y,z,x' '-z,-y,-x' '-x,-y,-z' 'x,z,y' 'z,x,y' '-y,-x,-z' '-y,-z,-x' 'z,y,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na1 0.00000 0.00000 0.00000 Fe1 0.50000 0.50000 0.50000 O1 0.22200 0.22200 0.22200