data_global _amcsd_formula_title 'Bi2Ge3O9' loop_ _publ_author_name 'Grabmaier B C' 'Haussuhl S' 'Klufers P' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 149 _journal_year 1979 _journal_page_first 261 _journal_page_last 267 _publ_section_title ; Crystal growth, structure, and physical properties of Bi2Ge3O9 ; _database_code_amcsd 0010807 _chemical_formula_sum 'Bi2 Ge3 O9' _cell_length_a 7.006 _cell_length_b 7.006 _cell_length_c 9.786 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 415.984 _exptl_crystal_density_diffrn 6.226 _symmetry_space_group_name_H-M 'P 63/m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' 'y,-x+y,-z' '-y,x-y,z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x-y,x,-z' '-x+y,-x,z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Bi 0.33333 0.66667 0.02645 Ge 0.29170 0.07780 0.25000 O1 0.19700 0.26700 0.25000 O2 0.43100 0.08200 0.10500 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Bi 0.00970 0.00970 0.01630 0.00480 0.00000 0.00000 Ge 0.00380 0.00510 0.01040 0.00250 0.00000 0.00000 O1 0.00900 0.00900 0.00900 0.00450 0.00000 0.00000 O2 0.01700 0.01700 0.01700 0.00850 0.00000 0.00000