data_[Ac8Cd20Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.9151]
_cell_length_b [18.2942]
_cell_length_c [10.1143]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac2Cd5Hg]
_chemical_formula_sum '[Ac8 Cd20 Hg4]'
_cell_volume [909.4586]
_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  4  0.0000  0.0000  0.0000  1
  Ac  Ac1  4  0.0000  0.2002  0.2500  1
  Cd  Cd2  8  0.0000  0.1870  0.6067  1
  Cd  Cd3  8  0.0000  0.3500  0.5248  1
  Cd  Cd4  4  0.0000  0.3989  0.2500  1
  Hg  Hg5  4  0.0000  0.4469  0.7500  1
]