data_[K2Na2Tl4Te4]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.2488]
_cell_length_b [10.2594]
_cell_length_c [8.1107]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [KNa(TlTe)2]
_chemical_formula_sum '[K2 Na2 Tl4 Te4]'
_cell_volume [436.7581]
_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  0.4616  0.9969  1.0
  Na  Na1  2  0.5000  0.3223  0.6520  1.0
  Tl  Tl2  2  0.0000  0.1595  0.3515  1.0
  Tl  Tl3  2  0.5000  0.1020  0.0192  1.0
  Te  Te4  2  0.0000  0.1821  0.7606  1.0
  Te  Te5  2  0.5000  0.3674  0.2654  1.0
]