data_global _amcsd_formula_title 'Pb3Ga2Ge4O14' loop_ _publ_author_name 'Belokoneva E L' 'Stefanovich S Y' 'Pisarevskii Y V' 'Mosunov A V' _journal_name_full 'Russian Journal of Inorganic Chemistry' _journal_volume 45 _journal_year 2000 _journal_page_first 1642 _journal_page_last 1651 _publ_section_title ; Refined structures of La3Ga5SiO14 and Pb3Ga2Ge4O14 and the crystal-chemical regularities in the structure and properties of compounds of the langasite family ; _database_code_amcsd 0015404 _chemical_formula_sum 'Pb3 Ga1.999 Ge4.001 O14' _cell_length_a 8.417 _cell_length_b 8.417 _cell_length_c 5.014 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 307.631 _exptl_crystal_density_diffrn 6.885 _symmetry_space_group_name_H-M 'P 3 2 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,x,-z' '-y,x-y,z' '-x,-x+y,-z' '-x+y,-x,z' 'x-y,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Pb 0.40500 0.00000 0.00000 1.00000 0.01684 Ga1 0.00000 0.00000 0.00000 0.40000 0.00697 GeGa1 0.00000 0.00000 0.00000 0.60000 0.00697 Ge1 0.33333 0.66667 0.51420 1.00000 0.00849 Ga2 0.75860 0.00000 0.50000 0.53300 0.00722 Ge2 0.75860 0.00000 0.50000 0.46700 0.00722 O1 0.33333 0.66667 0.17200 1.00000 0.02406 O2 0.45600 0.28800 0.34200 1.00000 0.02153 O3 0.21000 0.08800 0.77100 1.00000 0.01140