data_[Na4Yb2Cu4S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Yb  1.1000  1.7500  1.0840
  Cu  1.9000  1.3500  0.8200
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.5161]
_cell_length_b [3.7882]
_cell_length_c [7.2544]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.5353]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Yb(CuS2)2]
_chemical_formula_sum '[Na4 Yb2 Cu4 S8]'
_cell_volume [365.7374]
_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  4  0.1231  0.0000  0.0587  1.0
  Yb  Yb1  2  0.0000  0.0000  0.5000  1.0
  Cu  Cu2  4  0.1756  0.5000  0.4806  1.0
  S  S3  4  0.0160  0.5000  0.2390  1.0
  S  S4  4  0.2132  0.0000  0.6883  1.0
]