data_[K4Tl8]
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
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [13.7185]
_cell_length_b [3.6314]
_cell_length_c [8.9176]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.9361]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [KTl2]
_chemical_formula_sum '[K4 Tl8]'
_cell_volume [444.1876]
_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  2  0.2051  0.5000  0.3200  1.0
  K  K1  2  0.4542  0.5000  0.9967  1.0
  Tl  Tl2  2  0.0553  0.0000  0.6174  1.0
  Tl  Tl3  2  0.1847  0.5000  0.8799  1.0
  Tl  Tl4  2  0.3286  0.0000  0.6655  1.0
  Tl  Tl5  2  0.4387  0.0000  0.3538  1.0
]