data_[Ac4Hg20Pb2]
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 [Pbam]
_cell_length_a [11.7761]
_cell_length_b [12.7324]
_cell_length_c [5.8722]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Ac2Hg10Pb]
_chemical_formula_sum '[Ac4 Hg20 Pb2]'
_cell_volume [880.4635]
_cell_formula_units_Z [2]
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  4  0.1145  0.6698  0.5000  1
  Hg  Hg1  8  0.1173  0.1950  0.2584  1
  Hg  Hg2  4  0.0276  0.3863  0.0000  1
  Hg  Hg3  4  0.1721  0.8108  0.0000  1
  Hg  Hg4  4  0.2256  0.5315  0.0000  1
  Pb  Pb5  2  0.0000  0.0000  0.0000  1
]