data_global _amcsd_formula_title 'Bi2 Fe2 O11 Sr2.591' loop_ _publ_author_name 'Perez O' 'Leligny H' 'Grebille D' 'Labbe P' 'Groult D' 'Raveau B' _journal_name_full 'Journal of Physics: Condensed Matter' _journal_volume 7 _journal_year 1995 _journal_page_first 10003 _journal_page_last 10014 _publ_section_title ; X-ray investigation of the incommensurate modulated structure of Bi2+xSr3-xFe2O9+d _cod_database_code 1001709 ; _database_code_amcsd 0013280 _chemical_formula_sum 'Bi2 Sr2.591 Fe2 O11' _cell_length_a 5.488 _cell_length_b 5.475 _cell_length_c 31.50899 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 946.744 _exptl_crystal_density_diffrn 6.543 _symmetry_space_group_name_H-M 'F m m m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' '1/2+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,-y,1/2+z' '1/2+x,1/2-y,z' '-x,y,-z' '-x,1/2+y,1/2-z' '1/2-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,y,1/2+z' '1/2-x,1/2+y,z' 'x,-y,-z' 'x,1/2-y,1/2-z' '1/2+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,y,1/2-z' '1/2+x,1/2+y,-z' '-x,-y,z' '-x,1/2-y,1/2+z' '1/2-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,-y,1/2-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Bi1 0.02210 0.00000 0.20280 0.50000 Sr1 0.50000 0.00000 0.11760 0.79550 Sr2 0.50000 0.00000 0.00000 1.00000 Fe1 0.00000 0.00000 0.06070 1.00000 O1 0.25000 0.25000 0.06680 1.00000 O2 0.00000 0.00000 0.13890 1.00000 O3 0.00000 0.00000 0.00000 1.00000 O4 0.69170 0.00000 0.19730 1.00000