data_[Na8Ag8S12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [I2_13]
_cell_length_a [8.0754]
_cell_length_b [8.0754]
_cell_length_c [8.0754]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [199]
_chemical_formula_structural [Na2Ag2S3]
_chemical_formula_sum '[Na8 Ag8 S12]'
_cell_volume [526.6075]
_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  8  0.0787  0.0787  0.0787  1
  Ag  Ag1  8  0.1737  0.3263  0.6737  1
  S  S2  12  0.0000  0.2500  0.3863  1
]