data_[Na2Sn2Cl2F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
  Cl  3.1600  1.0000  0.7800
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.3475]
_cell_length_b [4.0296]
_cell_length_c [8.0507]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.9870]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaSnClF2]
_chemical_formula_sum '[Na2 Sn2 Cl2 F4]'
_cell_volume [202.1452]
_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  0.3115  0.2500  0.0796  1
  Sn  Sn1  2  0.2858  0.2500  0.6163  1
  Cl  Cl2  2  0.0805  0.7500  0.8127  1
  F  F3  2  0.4771  0.7500  0.6076  1
  F  F4  2  0.4941  0.7500  0.1499  1
]