data_[Na8S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.1734]
_cell_length_b [4.3153]
_cell_length_c [8.4168]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Na2S]
_chemical_formula_sum '[Na8 S4]'
_cell_volume [260.5454]
_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  0.0231  0.2500  0.8339  1.0
  Na  Na1  4  0.1440  0.2500  0.4271  1.0
  S  S2  4  0.2472  0.7500  0.6132  1.0
]