data_global _chemical_name_mineral 'Bismite' loop_ _publ_author_name 'Sillen L' _journal_name_full 'Naturwissenschaften' _journal_volume 28 _journal_year 1940 _journal_page_first 206 _journal_page_last 207 _publ_section_title ; Die Kristallstruktur des monoklinen alpha-Bi2 O3 _cod_database_code 1010004 ; _database_code_amcsd 0016940 _chemical_formula_sum 'Bi2 O3' _cell_length_a 5.83 _cell_length_b 8.14 _cell_length_c 7.48 _cell_angle_alpha 90 _cell_angle_beta 67.07 _cell_angle_gamma 90 _cell_volume 326.923 _exptl_crystal_density_diffrn 9.467 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Bi1 0.52000 0.18750 0.63500 Bi2 0.04000 0.04300 0.22500 O1 0.61500 0.27800 0.31600 O2 0.63100 0.02700 0.11300 O3 0.02400 0.08400 0.46000