data_[Pu2Zn8Cu8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pu  1.2800  1.7500  0.9675
  Zn  1.6500  1.3500  0.8800
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [8.1513]
_cell_length_b [8.1513]
_cell_length_c [4.3389]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Pu(ZnCu)4]
_chemical_formula_sum '[Pu2 Zn8 Cu8]'
_cell_volume [288.2932]
_cell_formula_units_Z [2]
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  2  0.0000  0.0000  0.0000  1
  Zn  Zn1  8  0.0914  0.3770  0.0000  1
  Cu  Cu2  8  0.1323  0.2281  0.5000  1
]