data_[Ac12Mg4Co8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Mg  1.3100  1.5000  0.8600
  Co  1.8800  1.3500  0.7683
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.7557]
_cell_length_b [4.0526]
_cell_length_c [11.4616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.9512]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac3MgCo2]
_chemical_formula_sum '[Ac12 Mg4 Co8]'
_cell_volume [721.6648]
_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  0.0835  0.5000  0.8978  1
  Ac  Ac1  4  0.1048  0.5000  0.4941  1
  Ac  Ac2  4  0.1559  0.0000  0.2410  1
  Mg  Mg3  4  0.1947  0.0000  0.7761  1
  Co  Co4  4  0.2359  0.0000  0.0323  1
  Co  Co5  4  0.2384  0.0000  0.5553  1
]