data_[Na4Tl8Pb4Cl20]
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
  Pb  2.3300  1.8000  1.1225
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.3733]
_cell_length_b [18.2286]
_cell_length_c [14.2588]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaTl2PbCl5]
_chemical_formula_sum '[Na4 Tl8 Pb4 Cl20]'
_cell_volume [1136.7063]
_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  0.4637  0.4514  1
  Tl  Tl1  4  0.0000  0.0873  0.6652  1
  Tl  Tl2  4  0.0000  0.1303  0.3009  1
  Pb  Pb3  4  0.0000  0.2203  0.0255  1
  Cl  Cl4  4  0.0000  0.0647  0.0550  1
  Cl  Cl5  4  0.0000  0.2726  0.6662  1
  Cl  Cl6  4  0.0000  0.3087  0.3952  1
  Cl  Cl7  4  0.0000  0.3806  0.9928  1
  Cl  Cl8  4  0.0000  0.4943  0.7717  1
]