data_[K4Tl4Cl2]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.0678]
_cell_length_b [8.0678]
_cell_length_c [6.4759]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [K2Tl2Cl]
_chemical_formula_sum '[K4 Tl4 Cl2]'
_cell_volume [421.5158]
_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
[
  K  K0  4  0.1813  0.3187  0.0000  1
  Tl  Tl1  4  0.1346  0.6346  0.5000  1
  Cl  Cl2  2  0.0000  0.0000  0.0000  1
]