data_[Cs4Sn2Br4F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Sn  1.9600  1.4500  0.8300
  Br  2.9600  1.1500  0.8825
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [7.4236]
_cell_length_b [7.4236]
_cell_length_c [9.0237]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Cs2Sn(BrF2)2]
_chemical_formula_sum '[Cs4 Sn2 Br4 F8]'
_cell_volume [497.2903]
_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  4  0.0000  0.5000  0.2500  1
  Sn  Sn1  2  0.0000  0.0000  0.0000  1
  Br  Br2  4  0.0000  0.0000  0.2880  1
  F  F3  8  0.1928  0.1928  0.0000  1
]