data_[Tl4Hg8]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.7477]
_cell_length_b [3.4057]
_cell_length_c [8.6334]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.1367]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TlHg2]
_chemical_formula_sum '[Tl4 Hg8]'
_cell_volume [351.9022]
_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  4  0.1867  0.0000  0.1454  1.0
  Hg  Hg1  4  0.0362  0.5000  0.7947  1.0
  Hg  Hg2  4  0.1346  0.0000  0.5170  1.0
]