data_[Na4Cd4Hg20Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.6184]
_cell_length_b [17.8628]
_cell_length_c [15.5713]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaCdHg5Pb2]
_chemical_formula_sum '[Na4 Cd4 Hg20 Pb8]'
_cell_volume [1006.4501]
_cell_formula_units_Z [4]
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  0.0000  0.4267  0.4409  1.0
  Cd  Cd1  4  0.0000  0.2199  0.0141  1.0
  Hg  Hg2  4  0.0000  0.0156  0.0899  1.0
  Hg  Hg3  4  0.0000  0.2674  0.3502  1.0
  Hg  Hg4  4  0.0000  0.3527  0.6636  1.0
  Hg  Hg5  4  0.0000  0.3871  0.0069  1.0
  Hg  Hg6  4  0.0000  0.4586  0.2471  1.0
  Pb  Pb7  4  0.0000  0.0895  0.3344  1.0
  Pb  Pb8  4  0.0000  0.1768  0.6769  1.0
]