data_[Na2Pt2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pt  2.2800  1.3500  0.8050
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [6.8325]
_cell_length_b [6.8325]
_cell_length_c [10.1069]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [NaPtBr4]
_chemical_formula_sum '[Na2 Pt2 Br8]'
_cell_volume [471.8249]
_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
[
  Na  Na0  2  0.0000  0.5000  0.2500  1
  Pt  Pt1  2  0.0000  0.0000  0.5000  1
  Br  Br2  8  0.1885  0.2379  0.6339  1
]