data_[Na3Cd18Hg24]
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
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [9.5967]
_cell_length_b [9.5967]
_cell_length_c [14.9580]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Na(Cd3Hg4)2]
_chemical_formula_sum '[Na3 Cd18 Hg24]'
_cell_volume [1193.0212]
_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  0.0000  1.0
  Cd  Cd1  18  0.0137  0.8163  0.4026  1.0
  Hg  Hg2  18  0.0279  0.7281  0.8984  1.0
  Hg  Hg3  6  0.0000  0.0000  0.2175  1.0
]