data_[Na4Cr2Cl8]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.1414]
_cell_length_b [10.9877]
_cell_length_c [3.9158]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na2CrCl4]
_chemical_formula_sum '[Na4 Cr2 Cl8]'
_cell_volume [350.2898]
_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  0.2500  0.2500  0.5000  1
  Cr  Cr1  2  0.0000  0.0000  0.0000  1
  Cl  Cl2  4  0.0000  0.2214  0.0000  1
  Cl  Cl3  4  0.2103  0.0000  0.5000  1
]