data_Pu3Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.78
_cell_length_b   5.78
_cell_length_c   5.78
_cell_angle_alpha   134.18
_cell_angle_beta   134.18
_cell_angle_gamma   66.8
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pu3Ag
_chemical_formula_sum   'Pu3 Ag1'
_cell_volume   97.64
_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
  Pu  Pu1  1  0.0  0.0  0.82  1.0
  Pu  Pu2  1  0.0  0.25  0.41  1.0
  Pu  Pu3  1  0.25  0.0  0.41  1.0
  Ag  Ag0  1  0.0  0.0  0.0  1.0

data_Pu3Ag
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.36
_cell_length_b   6.36
_cell_length_c   5.78
_cell_angle_alpha   90.0
_cell_angle_beta   123.4
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Pu3Ag
_chemical_formula_sum   'Pu6 Ag2'
_cell_volume   195.28
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  4  0.21  0.38  0.84  1.0
  Pu  Pu1  2  0.18  0.0  0.18  1.0
  Ag  Ag2  2  0.0  0.0  0.0  1.0

Pu Pu Pu Ag
Pu3Ag crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Pu3Ag clusters. There are two inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a single-bond geometry to one Ag(1) atom. The Pu(1)-Ag(1) bond length is 1.02 Å. In the second Pu site, Pu(2) is bonded in a distorted single-bond geometry to one Ag(1) atom. The Pu(2)-Ag(1) bond length is 1.72 Å. Ag(1) is bonded in a 3-coordinate geometry to one Pu(1) and two equivalent Pu(2) atoms.