data_[Tl20Te12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [8.9691]
_cell_length_b [8.9691]
_cell_length_c [12.7790]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [Tl5Te3]
_chemical_formula_sum '[Tl20 Te12]'
_cell_volume [1027.9948]
_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
[
  Tl  Tl0  16  0.1480  0.3520  0.3420  1
  Tl  Tl1  4  0.0000  0.0000  0.0000  1
  Te  Te2  8  0.1574  0.3426  0.0000  1
  Te  Te3  4  0.0000  0.0000  0.2500  1
]