data_[Na4Cr2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.4330]
_cell_length_b [4.1921]
_cell_length_c [7.4310]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.4895]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2CrBr4]
_chemical_formula_sum '[Na4 Cr2 Br8]'
_cell_volume [391.3572]
_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  4  0.2105  0.5000  0.6968  1.0
  Cr  Cr1  2  0.0000  0.0000  0.0000  1.0
  Br  Br2  4  0.1043  0.0000  0.3901  1.0
  Br  Br3  4  0.1282  0.5000  0.9951  1.0
]