data_[Tl6Sb4Pb18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.4017]
_cell_length_b [12.9591]
_cell_length_c [13.2167]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tl3Sb2Pb9]
_chemical_formula_sum '[Tl6 Sb4 Pb18]'
_cell_volume [925.1869]
_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
[
  Tl  Tl0  4  0.0000  0.2891  0.0000  1.0
  Tl  Tl1  2  0.0000  0.0000  0.0000  1.0
  Sb  Sb2  4  0.0000  0.5000  0.1605  1.0
  Pb  Pb3  8  0.0000  0.1421  0.2686  1.0
  Pb  Pb4  8  0.0000  0.3689  0.3747  1.0
  Pb  Pb5  2  0.0000  0.0000  0.5000  1.0
]