data_[Tl8Hg8Sb4Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [18.1306]
_cell_length_b [6.7860]
_cell_length_c [6.1696]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Tl2Hg2SbPb]
_chemical_formula_sum '[Tl8 Hg8 Sb4 Pb4]'
_cell_volume [759.0794]
_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  8  0.1682  0.1309  0.8538  1.0
  Hg  Hg1  8  0.1528  0.3884  0.3674  1.0
  Sb  Sb2  4  0.0000  0.2930  0.0124  1.0
  Pb  Pb3  4  0.0000  0.1704  0.5186  1.0
]