data_[Cs2Bi2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Bi  2.0200  1.6000  1.0350
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [4.2109]
_cell_length_b [6.4874]
_cell_length_c [8.9169]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [CsBiF4]
_chemical_formula_sum '[Cs2 Bi2 F8]'
_cell_volume [243.5888]
_cell_formula_units_Z [2]
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
[
  Cs  Cs0  2  0.0000  0.5000  0.3796  1.0
  Bi  Bi1  2  0.0000  0.5000  0.8891  1.0
  F  F2  4  0.0000  0.2003  0.0912  1.0
  F  F3  4  0.0000  0.2937  0.6954  1.0
]