data_[Na4Sn8Bi4S16]
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
  Bi  2.0200  1.6000  1.0350
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Fmm2]
_cell_length_a [8.2116]
_cell_length_b [11.6700]
_cell_length_c [8.2850]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [42]
_chemical_formula_structural [NaSn2BiS4]
_chemical_formula_sum '[Na4 Sn8 Bi4 S16]'
_cell_volume [793.9463]
_cell_formula_units_Z [4]
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  0.0000  0.0000  0.0667  1.0
  Sn  Sn1  8  0.2500  0.2500  0.3186  1.0
  Bi  Bi2  4  0.0000  0.0000  0.5855  1.0
  S  S3  8  0.0000  0.2410  0.5503  1.0
  S  S4  8  0.2409  0.0000  0.8063  1.0
]