data_[Na8Li4Tl20Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.4027]
_cell_length_b [18.0135]
_cell_length_c [10.4852]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Na2LiTl5Pb]
_chemical_formula_sum '[Na8 Li4 Tl20 Pb4]'
_cell_volume [1020.4485]
_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  8  0.0000  0.1116  0.0428  1
  Li  Li1  4  0.0000  0.4138  0.2500  1
  Tl  Tl2  8  0.0000  0.2989  0.0532  1
  Tl  Tl3  4  0.0000  0.0207  0.7500  1
  Tl  Tl4  4  0.0000  0.3950  0.7500  1
  Tl  Tl5  4  0.0000  0.5000  0.0000  1
  Pb  Pb6  4  0.0000  0.2092  0.7500  1
]