data_PuCuBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.19
_cell_length_b   5.19
_cell_length_c   5.19
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   PuCuBi2
_chemical_formula_sum   'Pu1 Cu1 Bi2'
_cell_volume   98.74
_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  Pu3  1  0.67  0.67  0.67  1.0
  Cu  Cu2  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.83  0.83  0.83  1.0
  Bi  Bi1  1  0.5  0.5  0.5  1.0

data_PuCuBi2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.19
_cell_length_b   5.19
_cell_length_c   12.71
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   PuCuBi2
_chemical_formula_sum   'Pu3 Cu3 Bi6'
_cell_volume   296.21
_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
  Pu  Pu0  3  0.0  0.0  0.33  1.0
  Cu  Cu1  3  0.0  0.0  0.0  1.0
  Bi  Bi2  3  0.0  0.0  0.17  1.0
  Bi  Bi3  3  0.0  0.0  0.5  1.0

Pu Cu Bi Bi
Pu Cu Bi Bi 0 3 o o o 0 2 o o o 1 2 - - - 
PuCuBi2 crystallizes in the trigonal R3m space group. Pu(1) is bonded in a distorted linear geometry to three equivalent Cu(1), one Bi(1), and one Bi(2) atom. All Pu(1)-Cu(1) bond lengths are 3.00 Å. The Pu(1)-Bi(1) bond length is 2.11 Å. The Pu(1)-Bi(2) bond length is 2.11 Å. Cu(1) is bonded to three equivalent Pu(1) and one Bi(1) atom to form corner-sharing CuPu3Bi trigonal pyramids. The Cu(1)-Bi(1) bond length is 2.11 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted linear geometry to one Pu(1) and one Cu(1) atom. In the second Bi site, Bi(2) is bonded in a single-bond geometry to one Pu(1) atom.