data_global _amcsd_formula_title 'Ge O8 Zr3' loop_ _publ_author_name 'Ennaciri A' 'Michel D' 'Perez y Jorba M' 'Pannetier J' _journal_name_full 'Materials Research Bulletin' _journal_volume 19 _journal_year 1984 _journal_page_first 793 _journal_page_last 799 _publ_section_title ; Neutron Diffraction Determination of the Structure of an Ordered Scheelite - Type: Zr3 Ge O8 _cod_database_code 1001196 ; _database_code_amcsd 0014315 _chemical_formula_sum 'Zr3 Ge O8' _cell_length_a 5.005 _cell_length_b 5.005 _cell_length_c 10.452 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 261.823 _exptl_crystal_density_diffrn 6.016 _symmetry_space_group_name_H-M 'I -4 2 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '-y,-x,z' '1/2-y,1/2-x,1/2+z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-x,y,-z' '1/2-x,1/2+y,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' 'y,x,z' '1/2+y,1/2+x,1/2+z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'x,-y,-z' '1/2+x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Zr1 0.00000 0.00000 0.50000 Zr2 0.00000 0.50000 0.25000 Ge1 0.00000 0.00000 0.00000 O1 0.20040 0.20040 0.34100 O2 0.21700 0.21700 0.09040