data_[Na4Tl2Hg1Pb2]
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
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.3854]
_cell_length_b [6.4845]
_cell_length_c [7.3192]
_cell_angle_alpha [73.8866]
_cell_angle_beta [73.9338]
_cell_angle_gamma [78.5001]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na4Tl2HgPb2]
_chemical_formula_sum '[Na4 Tl2 Hg1 Pb2]'
_cell_volume [277.3050]
_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  2  0.3441  0.7707  0.7041  1.0
  Na  Na1  2  0.3632  0.7904  0.2246  1.0
  Tl  Tl2  2  0.1872  0.3326  0.6037  1.0
  Hg  Hg3  1  0.0000  0.0000  0.0000  1.0
  Pb  Pb4  2  0.1798  0.3609  0.1191  1.0
]