data_[Na4Sn2Pb2S8]
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
  Pb  2.3300  1.8000  1.1225
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [9.8481]
_cell_length_b [7.6025]
_cell_length_c [6.1525]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Na2SnPbS4]
_chemical_formula_sum '[Na4 Sn2 Pb2 S8]'
_cell_volume [460.6355]
_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  0.2496  0.3181  0.4488  1.0
  Sn  Sn1  2  0.0000  0.1661  0.0027  1.0
  Pb  Pb2  2  0.0000  0.8053  0.4556  1.0
  S  S3  4  0.2101  0.3128  0.9178  1.0
  S  S4  2  0.0000  0.1534  0.4014  1.0
  S  S5  2  0.0000  0.8543  0.9071  1.0
]