data_[Tl6Hg3Ge3Br18]
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
  Ge  2.0100  1.2500  0.7700
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.8622]
_cell_length_b [7.8622]
_cell_length_c [22.7966]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Tl2HgGeBr6]
_chemical_formula_sum '[Tl6 Hg3 Ge3 Br18]'
_cell_volume [1220.3496]
_cell_formula_units_Z [3]
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  0.0000  0.0326  1.0
  Tl  Tl1  3  0.0000  0.0000  0.5143  1.0
  Hg  Hg2  3  0.0000  0.0000  0.2628  1.0
  Ge  Ge3  3  0.0000  0.0000  0.8118  1.0
  Br  Br4  9  0.0186  0.3860  0.5912  1.0
  Br  Br5  9  0.0794  0.7182  0.4218  1.0
]