data_global _amcsd_formula_title 'Er2O3' loop_ _publ_author_name 'Zachariasen W H' _journal_name_full 'Skrifter utgitt av det Norske Videnskaps-Akademi i Oslo' _journal_volume 1 _journal_year 1928 _journal_page_first 1 _journal_page_last 165 _publ_section_title ; Untersuchungen uber die Kristallstruktur von Sesquioxyden und Verbindungen ABO3 ; _database_code_amcsd 0017473 _chemical_formula_sum 'Er2 O3' _cell_length_a 10.54 _cell_length_b 10.54 _cell_length_c 10.54 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1170.905 _exptl_crystal_density_diffrn 8.680 _symmetry_space_group_name_H-M 'I 21 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/2-z,-x,1/2+y' '-z,1/2-x,+y' '-z,1/2+x,1/2-y' '1/2-z,+x,-y' '1/2+z,1/2-x,-y' '+z,-x,1/2-y' 'z,x,y' '1/2+z,1/2+x,1/2+y' '1/2+y,1/2-z,-x' '+y,-z,1/2-x' '1/2-y,-z,1/2+x' '-y,1/2-z,+x' '-y,1/2+z,1/2-x' '1/2-y,+z,-x' 'y,z,x' '1/2+y,1/2+z,1/2+x' '-x,1/2+y,1/2-z' '1/2-x,+y,-z' '1/2+x,1/2-y,-z' '+x,-y,1/2-z' '1/2-x,-y,1/2+z' '-x,1/2-y,+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Er1 0.25000 0.25000 0.25000 Er2 0.02100 0.00000 0.25000 Er3 0.54200 0.00000 0.25000 O1 0.12500 0.12500 0.37500 O2 0.12500 0.37500 0.37500