data_[Na2H2Cl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  H  2.2000  0.2500  0.0000
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [5.7940]
_cell_length_b [4.1115]
_cell_length_c [7.5291]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.5459]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [NaHCl2]
_chemical_formula_sum '[Na2 H2 Cl4]'
_cell_volume [176.3263]
_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  0.2841  0.7500  1.0
  H  H1  2  0.5000  0.0000  0.0000  1.0
  Cl  Cl2  4  0.2650  0.1916  0.4604  1.0
]