data_[Na8Bi4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.0955]
_cell_length_b [12.0656]
_cell_length_c [10.9533]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Na2BiF4]
_chemical_formula_sum '[Na8 Bi4 F16]'
_cell_volume [409.0953]
_cell_formula_units_Z [4]
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
[
  Na  Na0  8  0.0000  0.1351  0.0641  1
  Bi  Bi1  4  0.0000  0.3998  0.2500  1
  F  F2  8  0.0000  0.2260  0.6173  1
  F  F3  4  0.0000  0.0645  0.2500  1
  F  F4  4  0.0000  0.5000  0.0000  1
]