data_[Na4Tl20Bi8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.7471]
_cell_length_b [17.6091]
_cell_length_c [14.4338]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaTl5Bi2Pb]
_chemical_formula_sum '[Na4 Tl20 Bi8 Pb4]'
_cell_volume [1206.5642]
_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
[
  Na  Na0  4  0.0000  0.4791  0.3916  1.0
  Tl  Tl1  4  0.0000  0.0727  0.5135  1.0
  Tl  Tl2  4  0.0000  0.2733  0.3847  1.0
  Tl  Tl3  4  0.0000  0.2970  0.7021  1.0
  Tl  Tl4  4  0.0000  0.3136  0.1059  1.0
  Tl  Tl5  4  0.0000  0.4916  0.6427  1.0
  Bi  Bi6  4  0.0000  0.0825  0.2718  1.0
  Bi  Bi7  4  0.0000  0.1129  0.7812  1.0
  Pb  Pb8  4  0.0000  0.1289  0.0303  1.0
]