data_[Na4Si2Sn2S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  Sn  1.9600  1.4500  0.8300
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [9.4330]
_cell_length_b [7.2683]
_cell_length_c [6.0010]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Na2SiSnS4]
_chemical_formula_sum '[Na4 Si2 Sn2 S8]'
_cell_volume [411.4387]
_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  0.2476  0.3208  0.4554  1.0
  Si  Si1  2  0.0000  0.1567  0.0092  1.0
  Sn  Sn2  2  0.0000  0.7946  0.4622  1.0
  S  S3  4  0.1906  0.2974  0.9257  1.0
  S  S4  2  0.0000  0.1343  0.3707  1.0
  S  S5  2  0.0000  0.8725  0.8957  1.0
]