data_[K2Na14Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.5237]
_cell_length_b [5.9734]
_cell_length_c [11.6001]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.6929]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KNa7Tl4]
_chemical_formula_sum '[K2 Na14 Tl8]'
_cell_volume [827.4600]
_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  2  0.0000  0.0000  0.0000  1.0
  Na  Na1  4  0.0643  0.0000  0.3839  1.0
  Na  Na2  4  0.1703  0.5000  0.6065  1.0
  Na  Na3  4  0.2177  0.0000  0.8750  1.0
  Na  Na4  2  0.0000  0.5000  0.0000  1.0
  Tl  Tl5  4  0.0663  0.5000  0.7809  1.0
  Tl  Tl6  4  0.1864  0.5000  0.3368  1.0
]