data_PrPuHf2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   5.2
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   PrPuHf2
_chemical_formula_sum   'Pr1 Pu1 Hf2'
_cell_volume   99.54
_cell_formula_units_Z   1
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
  Pr  Pr2  1  0.0  0.0  0.0  1.0
  Pu  Pu3  1  0.68  0.68  0.68  1.0
  Hf  Hf0  1  0.52  0.52  0.52  1.0
  Hf  Hf1  1  0.84  0.84  0.84  1.0

data_PrPuHf2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   12.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   PrPuHf2
_chemical_formula_sum   'Pr3 Pu3 Hf6'
_cell_volume   298.62
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Pr  Pr0  3  0.0  0.0  0.0  1.0
  Pu  Pu1  3  0.0  0.0  0.32  1.0
  Hf  Hf2  3  0.0  0.0  0.16  1.0
  Hf  Hf3  3  0.0  0.0  0.48  1.0

Pr Pu Hf Hf
Pr Pu Hf Hf 0 3 - - - 1 2 o o o 1 3 o o o 
PuPrHf2 crystallizes in the trigonal R3m space group. Pu(1) is bonded to three equivalent Pr(1), one Hf(1), and one Hf(2) atom to form distorted corner-sharing PuPr3Hf2 trigonal bipyramids. All Pu(1)-Pr(1) bond lengths are 3.01 Å. The Pu(1)-Hf(1) bond length is 2.05 Å. The Pu(1)-Hf(2) bond length is 2.05 Å. Pr(1) is bonded in a distorted single-bond geometry to three equivalent Pu(1) and one Hf(2) atom. The Pr(1)-Hf(2) bond length is 2.05 Å. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a distorted single-bond geometry to one Pu(1) atom. In the second Hf site, Hf(2) is bonded in a distorted linear geometry to one Pu(1) and one Pr(1) atom.