data_[Na4Zn2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zn  1.6500  1.3500  0.8800
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.7698]
_cell_length_b [7.1492]
_cell_length_c [7.7385]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.3475]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Na2ZnCl4]
_chemical_formula_sum '[Na4 Zn2 Cl8]'
_cell_volume [359.3869]
_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  0.2723  0.2500  0.4426  1.0
  Na  Na1  2  0.2960  0.2500  0.9514  1.0
  Zn  Zn2  2  0.2351  0.7500  0.1868  1.0
  Cl  Cl3  4  0.4716  0.5066  0.2473  1.0
  Cl  Cl4  2  0.0260  0.7500  0.3696  1.0
  Cl  Cl5  2  0.0429  0.7500  0.8953  1.0
]