data_[Na2Tl2Pb2]
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 [Pmm2]
_cell_length_a [3.5787]
_cell_length_b [4.7042]
_cell_length_c [10.6078]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [NaTlPb]
_chemical_formula_sum '[Na2 Tl2 Pb2]'
_cell_volume [178.5804]
_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  1  0.5000  0.0000  0.0253  1.0
  Na  Na1  1  0.5000  0.0000  0.3572  1.0
  Tl  Tl2  1  0.0000  0.5000  0.5278  1.0
  Tl  Tl3  1  0.5000  0.0000  0.6925  1.0
  Pb  Pb4  1  0.0000  0.5000  0.1882  1.0
  Pb  Pb5  1  0.0000  0.5000  0.8571  1.0
]