data_global _amcsd_formula_title 'CsAlF4' loop_ _publ_author_name 'Bentrup U' 'Le Bail A' 'Duroy H' 'Fourquet J' _journal_name_full 'European Journal of Solid State and Inorganic Chemistry' _journal_volume 29 _journal_year 1992 _journal_page_first 371 _journal_page_last 381 _publ_section_title ; Polymorphism of CsAlF4. Synthesis and structure of two new crystalline forms _cod_database_code 1000106 ; _database_code_amcsd 0012552 _chemical_formula_sum 'Cs5 Al5 F20' _cell_length_a 11.8101 _cell_length_b 11.8101 _cell_length_c 13.3741 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1865.399 _exptl_crystal_density_diffrn 4.200 _symmetry_space_group_name_H-M 'I -4 c 2' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'y,x,1/2-z' '1/2+y,1/2+x,-z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' 'x,-y,1/2+z' '1/2+x,1/2-y,+z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' '-y,-x,1/2-z' '1/2-y,1/2-x,-z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' '-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 Cs1 0.00000 0.00000 0.25000 Cs2 0.33910 0.84140 0.68500 Al1 0.50000 0.00000 0.00000 Al2 0.79270 0.07640 0.00600 F1 0.34450 -0.00040 0.01100 F2 0.13980 0.07170 0.01150 F3 0.07200 0.21900 0.13100 F4 0.92000 0.80100 0.87200 F5 0.21560 0.71560 0.50000 F6 0.00000 0.50000 0.13380