data_global _amcsd_formula_title 'F4 Si' loop_ _publ_author_name 'Natta G' _journal_name_full 'Gazzetta Chimica Italiana' _journal_volume 60 _journal_year 1930 _journal_page_first 911 _journal_page_last 922 _publ_section_title ; Struttura del tetrafluoruro de Silicio _cod_database_code 1010134 ; _database_code_amcsd 0017064 _chemical_formula_sum 'Si F4' _cell_length_a 5.41 _cell_length_b 5.41 _cell_length_c 5.41 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 158.340 _exptl_crystal_density_diffrn 2.183 _symmetry_space_group_name_H-M 'P 42 3 2' loop_ _space_group_symop_operation_xyz 'x,y,z' '-z,x,-y' '-y,z,-x' '-x,y,-z' '1/2-x,1/2+z,1/2+y' '1/2-z,1/2+y,1/2+x' '1/2-y,1/2+x,1/2+z' '1/2-x,1/2-z,1/2-y' '1/2-z,1/2-y,1/2-x' '1/2-y,1/2-x,1/2-z' '-z,-x,y' '-y,-z,x' '-x,-y,z' 'z,-x,-y' 'y,-z,-x' 'x,-y,-z' '1/2+x,1/2-z,1/2+y' '1/2+z,1/2-y,1/2+x' '1/2+y,1/2-x,1/2+z' '1/2+x,1/2+z,1/2-y' '1/2+z,1/2+y,1/2-x' '1/2+y,1/2+x,1/2-z' 'z,x,y' 'y,z,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Si1 0.00000 0.00000 0.00000 F1 0.17200 0.17200 0.17200