data_[Nb4Tl4Cu4Se4S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
  Cu  1.9000  1.3500  0.8200
  Se  2.5500  1.1500  1.0133
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.5319]
_cell_length_b [15.1050]
_cell_length_c [9.7849]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [NbTlCuSeS2]
_chemical_formula_sum '[Nb4 Tl4 Cu4 Se4 S8]'
_cell_volume [522.0273]
_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
[
  Nb  Nb0  4  0.0000  0.0000  0.0000  1
  Tl  Tl1  4  0.0000  0.2430  0.7500  1
  Cu  Cu2  4  0.0000  0.4610  0.2500  1
  Se  Se3  4  0.0000  0.0738  0.2500  1
  S  S4  8  0.0000  0.3851  0.0516  1
]