data_[Ac8Hg20Pb12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [12.9376]
_cell_length_b [13.7418]
_cell_length_c [6.8706]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Ac2Hg5Pb3]
_chemical_formula_sum '[Ac8 Hg20 Pb12]'
_cell_volume [1221.5016]
_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
[
  Ac  Ac0  8  0.2340  0.1292  0.5000  1
  Hg  Hg1  8  0.0000  0.2628  0.2500  1
  Hg  Hg2  8  0.1298  0.1452  0.0000  1
  Hg  Hg3  4  0.0000  0.5000  0.2500  1
  Pb  Pb4  8  0.1501  0.3858  0.5000  1
  Pb  Pb5  4  0.0000  0.0000  0.2500  1
]