data_[Na4Tl2Pb12]
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 [11.3248]
_cell_length_b [6.6853]
_cell_length_c [8.1875]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1883]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2TlPb6]
_chemical_formula_sum '[Na4 Tl2 Pb12]'
_cell_volume [595.2970]
_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  4  0.1797  0.5000  0.8205  1
  Tl  Tl1  2  0.0000  0.0000  0.0000  1
  Pb  Pb2  8  0.0979  0.2489  0.3733  1
  Pb  Pb3  4  0.1800  0.0000  0.7494  1
]