data_[Pm20Sm8Pu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Pu  1.2800  1.7500  0.9675
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [9.8831]
_cell_length_b [9.8831]
_cell_length_c [10.5804]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Pm10Sm4Pu]
_chemical_formula_sum '[Pm20 Sm8 Pu2]'
_cell_volume [1033.4458]
_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
[
  Pm  Pm0  16  0.1163  0.2074  0.3402  1
  Pm  Pm1  4  0.0000  0.5000  0.2500  1
  Sm  Sm2  8  0.0560  0.3220  0.0000  1
  Pu  Pu3  2  0.0000  0.0000  0.0000  1
]