data_global _amcsd_formula_title 'Na2Ca3Al2F14' loop_ _publ_author_name 'Courbion G' 'Ferey G' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 76 _journal_year 1988 _journal_page_first 426 _journal_page_last 431 _publ_section_title ; Na2Ca3Al2F14: A New Example of a Structure with "Independent F" - A New Method of Comparison between Fluorides and Oxides of Different Formula _cod_database_code 1000236 ; _database_code_amcsd 0013623 _chemical_formula_sum 'Ca3 Al2 Na2 F14' _cell_length_a 10.257 _cell_length_b 10.257 _cell_length_c 10.257 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1079.098 _exptl_crystal_density_diffrn 2.992 _symmetry_space_group_name_H-M 'I 21 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/2-z,-x,1/2+y' '-z,1/2-x,+y' '-z,1/2+x,1/2-y' '1/2-z,+x,-y' '1/2+z,1/2-x,-y' '+z,-x,1/2-y' 'z,x,y' '1/2+z,1/2+x,1/2+y' '1/2+y,1/2-z,-x' '+y,-z,1/2-x' '1/2-y,-z,1/2+x' '-y,1/2-z,+x' '-y,1/2+z,1/2-x' '1/2-y,+z,-x' 'y,z,x' '1/2+y,1/2+z,1/2+x' '-x,1/2+y,1/2-z' '1/2-x,+y,-z' '1/2+x,1/2-y,-z' '+x,-y,1/2-z' '1/2-x,-y,1/2+z' '-x,1/2-y,+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ca1 0.46670 0.00000 0.25000 Al1 0.24820 0.24820 0.24820 Na1 0.08470 0.08470 0.08470 F1 0.13870 0.30620 0.12060 F2 0.36400 0.36270 0.18730 F3 0.46140 0.46140 0.46140 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ca1 0.00780 0.00910 0.00780 0.00000 0.00000 0.00000 Al1 0.00750 0.00750 0.00750 -0.00020 -0.00020 -0.00020 Na1 0.02730 0.02730 0.02730 -0.00880 -0.00880 -0.00880 F1 0.01140 0.01270 0.01250 0.00250 -0.00290 -0.00070 F2 0.01310 0.01470 0.01540 0.00260 -0.00060 -0.00590 F3 0.01040 0.01040 0.01040 0.00140 0.00140 0.00140