data_[Na24Hg12Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  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 [10.4906]
_cell_length_b [17.9724]
_cell_length_c [6.3504]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na6Hg3Pb]
_chemical_formula_sum '[Na24 Hg12 Pb4]'
_cell_volume [1197.3217]
_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  8  0.1628  0.4734  0.4607  1.0
  Na  Na1  8  0.2495  0.3043  0.6202  1.0
  Na  Na2  4  0.0000  0.0658  0.2929  1.0
  Na  Na3  4  0.0000  0.2985  0.2814  1.0
  Hg  Hg4  8  0.2423  0.1282  0.5862  1.0
  Hg  Hg5  4  0.0000  0.3783  0.8062  1.0
  Pb  Pb6  4  0.0000  0.1916  0.7998  1.0
]