data_[Ac8Ho12Hg16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Ho  1.2300  1.7500  1.0410
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [7.1623]
_cell_length_b [17.9852]
_cell_length_c [8.4796]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Ac2Ho3Hg4]
_chemical_formula_sum '[Ac8 Ho12 Hg16]'
_cell_volume [1092.3022]
_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  0.0991  0.4087  1
  Ho  Ho1  8  0.2500  0.2338  0.7500  1
  Ho  Ho2  4  0.0000  0.0000  0.0000  1
  Hg  Hg3  8  0.0000  0.1733  0.0286  1
  Hg  Hg4  8  0.2500  0.0623  0.7500  1
]