data_[Ac4Nd8Pu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Nd  1.1400  1.8500  1.2765
  Pu  1.2800  1.7500  0.9675
]
_symmetry_space_group_name_H-M [Fm-3m]
_cell_length_a [8.3271]
_cell_length_b [8.3271]
_cell_length_c [8.3271]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [225]
_chemical_formula_structural [AcNd2Pu]
_chemical_formula_sum '[Ac4 Nd8 Pu4]'
_cell_volume [577.4160]
_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
  Nd  Nd1  8  0.2500  0.2500  0.2500  1
  Pu  Pu2  4  0.0000  0.0000  0.5000  1
]