data_[Na4Fe2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Fe  1.8300  1.4000  0.8525
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [6.9044]
_cell_length_b [11.8865]
_cell_length_c [3.8716]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Na2FeCl4]
_chemical_formula_sum '[Na4 Fe2 Cl8]'
_cell_volume [317.7398]
_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  0.0739  0.3189  0.5000  1.0
  Fe  Fe1  2  0.0000  0.0000  0.0000  1.0
  Cl  Cl2  4  0.1316  0.8097  0.0000  1.0
  Cl  Cl3  4  0.2268  0.0497  0.5000  1.0
]