data_global _amcsd_formula_title 'F6 Na2 U' loop_ _publ_author_name 'Cousson A' 'Tabuteau A' 'Pages M' 'Gasperin M' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 35 _journal_year 1979 _journal_page_first 1198 _journal_page_last 1200 _publ_section_title ; Disodium uranium(IV) fluoride _cod_database_code 1001038 ; _database_code_amcsd 0009667 _chemical_formula_sum 'U Na2 F6' _cell_length_a 6.112 _cell_length_b 6.112 _cell_length_c 7.240 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 234.226 _exptl_crystal_density_diffrn 5.643 _symmetry_space_group_name_H-M 'P 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,x-y,z' '-x+y,-x,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z U1 0.33333 0.66660 0.85790 U2 0.66660 0.33333 0.13940 Na1 0.00000 0.00000 0.03130 Na2 0.00000 0.00000 0.51110 Na3 0.33333 0.66667 0.41410 Na4 0.66667 0.33333 0.62130 F1 0.31660 0.91910 0.10830 F2 0.71570 0.09110 0.34590 F3 0.09240 0.39460 0.63540 F4 0.69910 0.08000 0.90290