data_[Na2Tl4Hg2Pb4]
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 [Pmc2_1]
_cell_length_a [4.8694]
_cell_length_b [10.4568]
_cell_length_c [7.0447]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [NaTl2HgPb2]
_chemical_formula_sum '[Na2 Tl4 Hg2 Pb4]'
_cell_volume [358.7066]
_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  0.4980  0.8893  1.0
  Tl  Tl1  2  0.0000  0.1742  0.8748  1.0
  Tl  Tl2  2  0.5000  0.3337  0.1406  1.0
  Hg  Hg3  2  0.5000  0.3449  0.6325  1.0
  Pb  Pb4  2  0.0000  0.1692  0.3780  1.0
  Pb  Pb5  2  0.5000  0.0005  0.6304  1.0
]