data_[Na2Tl12Pb4]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4414]
_cell_length_b [9.5614]
_cell_length_c [5.8085]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.4555]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na(Tl3Pb)2]
_chemical_formula_sum '[Na2 Tl12 Pb4]'
_cell_volume [558.6580]
_cell_formula_units_Z [2]
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  2  0.0000  0.0000  0.0000  1
  Tl  Tl1  8  0.1671  0.3192  0.1653  1
  Tl  Tl2  4  0.0000  0.1833  0.5000  1
  Pb  Pb3  4  0.1637  0.5000  0.6614  1
]