data_[Na8U4Sn4S20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  U  1.3800  1.7500  0.9913
  Sn  1.9600  1.4500  0.8300
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.0393]
_cell_length_b [16.5378]
_cell_length_c [13.5700]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2USnS5]
_chemical_formula_sum '[Na8 U4 Sn4 S20]'
_cell_volume [906.4877]
_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  0.0886  0.6654  1
  Na  Na1  4  0.0000  0.1320  0.3063  1
  U  U2  4  0.0000  0.2323  0.0340  1
  Sn  Sn3  4  0.0000  0.4614  0.4366  1
  S  S4  4  0.0000  0.0649  0.0491  1
  S  S5  4  0.0000  0.2663  0.6617  1
  S  S6  4  0.0000  0.2987  0.4058  1
  S  S7  4  0.0000  0.3829  0.9969  1
  S  S8  4  0.0000  0.4963  0.7680  1
]