data_[Na3Cd9Hg18Pb3]
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 [R3]
_cell_length_a [10.7974]
_cell_length_b [10.7974]
_cell_length_c [9.0021]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaCd3Hg6Pb]
_chemical_formula_sum '[Na3 Cd9 Hg18 Pb3]'
_cell_volume [908.9023]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.8170  1.0
  Cd  Cd1  9  0.0616  0.3359  0.3561  1.0
  Hg  Hg2  9  0.0538  0.7856  0.6146  1.0
  Hg  Hg3  9  0.0804  0.8792  0.0973  1.0
  Pb  Pb4  3  0.0000  0.0000  0.4082  1.0
]