data_[Ac16Co8Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Co  1.8800  1.3500  0.7683
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2627]
_cell_length_b [14.3008]
_cell_length_c [14.5218]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac4Co2Hg]
_chemical_formula_sum '[Ac16 Co8 Hg4]'
_cell_volume [885.2509]
_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  0.0000  0.2344  0.6082  1
  Ac  Ac1  4  0.0000  0.0713  0.2500  1
  Ac  Ac2  4  0.0000  0.5000  0.0000  1
  Co  Co3  8  0.0000  0.1303  0.0633  1
  Hg  Hg4  4  0.0000  0.3889  0.2500  1
]