data_1008815 _chemical_name_systematic 'Strontium bismuth trioxide' _chemical_formula_structural 'Sr Bi O3' _chemical_formula_sum 'Bi O3 Sr' _publ_section_title ; Discovery of a second family of bismuth-oxide-based superconductors ; loop_ _publ_author_name 'Kazakov, S M' 'Chaillout, C' 'Bordet, P' 'Capponi, J J' 'Nunez-Regueiro, M' 'Rysak, A' 'Tholence, J L' 'Radaelli, P G' 'Putilin, S N' 'Antipov, E V' _journal_name_full 'Nature (London)' _journal_coden_ASTM NATUAS _journal_volume 390 _journal_year 1997 _journal_page_first 148 _journal_page_last 150 _cell_length_a 5.9480(2) _cell_length_b 6.0951(2) _cell_length_c 8.4854(3) _cell_angle_alpha 90 _cell_angle_beta 90.063(6) _cell_angle_gamma 90 _cell_volume 307.6 _cell_formula_units_Z 4 _symmetry_space_group_name_H-M 'P 1 21/n 1' _symmetry_Int_Tables_number 14 _symmetry_cell_setting monoclinic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '-x,-y,-z' '1/2-x,1/2+y,1/2-z' loop_ _atom_type_symbol _atom_type_oxidation_number Sr2+ 2.000 Bi3+ 3.000 Bi5+ 5.000 O2- -2.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Sr1 Sr2+ 4 e -0.0152(7) 0.5455(4) 0.251(1) 1. 0 d Bi1 Bi3+ 2 a 0. 0. 0. 1. 0 d Bi2 Bi5+ 2 b 0. 0. 0.5 1. 0 d O1 O2- 4 e 0.4056(7) 0.4617(7) 0.241(1) 1. 0 d O2 O2- 4 e 0.284(1) 0.190(1) 0.546(1) 1. 0 d O3 O2- 4 e 0.187(1) 0.714(1) 0.556(1) 1. 0 d _refine_ls_R_factor_all 0.071