data_[Na4Tl4Bi8Pb20]
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 [4.3202]
_cell_length_b [18.9896]
_cell_length_c [14.8791]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaTlBi2Pb5]
_chemical_formula_sum '[Na4 Tl4 Bi8 Pb20]'
_cell_volume [1220.6668]
_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  0.3842  0.4755  1.0
  Tl  Tl1  4  0.0000  0.2706  0.9932  1.0
  Bi  Bi2  4  0.0000  0.1185  0.3381  1.0
  Bi  Bi3  4  0.0000  0.1275  0.6459  1.0
  Pb  Pb4  4  0.0000  0.0475  0.1313  1.0
  Pb  Pb5  4  0.0000  0.2922  0.2914  1.0
  Pb  Pb6  4  0.0000  0.3050  0.6833  1.0
  Pb  Pb7  4  0.0000  0.4417  0.9941  1.0
  Pb  Pb8  4  0.0000  0.4761  0.2712  1.0
]