data_[K4Tl4I16]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [I4_1/a]
_cell_length_a [7.8975]
_cell_length_b [7.8975]
_cell_length_c [18.7802]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [88]
_chemical_formula_structural [KTlI4]
_chemical_formula_sum '[K4 Tl4 I16]'
_cell_volume [1171.3351]
_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  0.0000  0.0000  0.0000  1.0
  Tl  Tl1  4  0.0000  0.0000  0.5000  1.0
  I  I2  16  0.1636  0.2455  0.8333  1.0
]