data_[Pu8Ni20Sb16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pu  1.2800  1.7500  0.9675
  Ni  1.9100  1.3500  0.7400
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [5.7141]
_cell_length_b [10.0946]
_cell_length_c [14.9496]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Pu2Ni5Sb4]
_chemical_formula_sum '[Pu8 Ni20 Sb16]'
_cell_volume [862.3153]
_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
[
  Pu  Pu0  8  0.0000  0.0000  0.1465  1
  Ni  Ni1  8  0.2500  0.2500  0.0000  1
  Ni  Ni2  8  0.2500  0.2500  0.2500  1
  Ni  Ni3  4  0.0000  0.0000  0.5000  1
  Sb  Sb4  16  0.0000  0.1571  0.3713  1
]