data_[K4Tl4Ge4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tl  1.6200  1.9000  1.3325
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [11.9278]
_cell_length_b [3.9940]
_cell_length_c [8.9959]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [KTlGe]
_chemical_formula_sum '[K4 Tl4 Ge4]'
_cell_volume [428.5622]
_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
[
  K  K0  4  0.2239  0.7500  0.6002  1
  Tl  Tl1  4  0.0341  0.7500  0.2754  1
  Ge  Ge2  4  0.0656  0.7500  0.9564  1
]