data_[Tl4Ge6Se16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6158]
_cell_length_b [7.9526]
_cell_length_c [6.6652]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.1258]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tl2Ge3Se8]
_chemical_formula_sum '[Tl4 Ge6 Se16]'
_cell_volume [689.7207]
_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  0.1666  0.5000  0.5934  1
  Ge  Ge1  4  0.0000  0.2637  0.0000  1
  Ge  Ge2  2  0.0000  0.0000  0.5000  1
  Se  Se3  8  0.1207  0.2091  0.7597  1
  Se  Se4  4  0.1149  0.0000  0.2485  1
  Se  Se5  4  0.1325  0.5000  0.1720  1
]