data_[Na1Tl1Pb1Au1]
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
  Au  2.5400  1.3500  1.0700
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.5559]
_cell_length_b [3.5559]
_cell_length_c [8.3927]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [NaTlPbAu]
_chemical_formula_sum '[Na1 Tl1 Pb1 Au1]'
_cell_volume [106.1188]
_cell_formula_units_Z [1]
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  0.0000  0.0000  0.0097  1
  Tl  Tl1  1  0.5000  0.5000  0.7289  1
  Pb  Pb2  1  0.0000  0.0000  0.4304  1
  Au  Au3  1  0.5000  0.5000  0.2198  1
]