data_[Tl3Hg4]
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 [P6/mmm]
_cell_length_a [6.9176]
_cell_length_b [6.9176]
_cell_length_c [5.4294]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [191]
_chemical_formula_structural [Tl3Hg4]
_chemical_formula_sum '[Tl3 Hg4]'
_cell_volume [225.0066]
_cell_formula_units_Z [1]
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  3  0.0000  0.5000  0.0000  1.0
  Hg  Hg1  2  0.0000  0.0000  0.2518  1.0
  Hg  Hg2  2  0.3333  0.6667  0.5000  1.0
]