data_[K4Tl4Pb4]
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
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.7226]
_cell_length_b [5.1281]
_cell_length_c [10.9285]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [KTlPb]
_chemical_formula_sum '[K4 Tl4 Pb4]'
_cell_volume [432.7958]
_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  0.1266  0.7500  0.4100  1.0
  Tl  Tl1  4  0.0846  0.7500  0.7716  1.0
  Pb  Pb2  4  0.1067  0.7500  0.0662  1.0
]