data_[Na2Cu2Te4S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cu  1.9000  1.3500  0.8200
  Te  2.1000  1.4000  1.2933
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [7.1337]
_cell_length_b [7.1337]
_cell_length_c [7.0502]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [NaCu(TeS2)2]
_chemical_formula_sum '[Na2 Cu2 Te4 S8]'
_cell_volume [358.7783]
_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  2  0.0000  0.0000  0.0000  1
  Cu  Cu1  2  0.0000  0.0000  0.5000  1
  Te  Te2  4  0.0000  0.5000  0.2500  1
  S  S3  8  0.1826  0.1826  0.3019  1
]