data_[K8Tl4]
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 [13.3720]
_cell_length_b [4.6914]
_cell_length_c [10.1355]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.9218]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [K2Tl]
_chemical_formula_sum '[K8 Tl4]'
_cell_volume [622.1215]
_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  0.1014  0.0000  0.0202  1
  K  K1  2  0.2094  0.5000  0.4447  1
  K  K2  2  0.3315  0.0000  0.7839  1
  K  K3  2  0.4148  0.0000  0.2746  1
  Tl  Tl4  2  0.0080  0.0000  0.5631  1
  Tl  Tl5  2  0.1015  0.5000  0.7468  1
]