data_Eu2PuCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.84
_cell_length_b   4.84
_cell_length_c   4.84
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu2PuCo
_chemical_formula_sum   'Eu2 Pu1 Co1'
_cell_volume   79.93
_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
  Eu  Eu1  1  0.13  0.13  0.13  1.0
  Eu  Eu2  1  0.71  0.71  0.71  1.0
  Pu  Pu3  1  0.42  0.42  0.42  1.0
  Co  Co0  1  0.0  0.0  0.0  1.0

data_Eu2PuCo
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.84
_cell_length_b   4.84
_cell_length_c   11.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Eu2PuCo
_chemical_formula_sum   'Eu6 Pu3 Co3'
_cell_volume   239.78
_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
  Eu  Eu0  3  0.0  0.0  0.29  1.0
  Eu  Eu1  3  0.0  0.0  0.87  1.0
  Pu  Pu2  3  0.0  0.0  0.58  1.0
  Co  Co3  3  0.0  0.0  0.0  1.0

Eu Eu Pu Co
Eu Eu Pu Co 0 3 o o o 0 1 o - - 0 1 - o - 0 1 - - o 0 2 o o - 0 2 o - o 0 2 - o o 1 2 o o + 1 2 o + o 1 2 + o o 1 3 o + + 1 3 + o + 1 3 + + o 2 3 o o + 2 3 o + o 2 3 + o o 
PuEu2Co is Heusler structured and crystallizes in the trigonal R3m space group. Pu(1) is bonded in a 11-coordinate geometry to four equivalent Eu(1), four equivalent Eu(2), and three equivalent Co(1) atoms. There are three shorter (2.84 Å) and one longer (3.44 Å) Pu(1)-Eu(1) bond length. There are three shorter (2.84 Å) and one longer (3.44 Å) Pu(1)-Eu(2) bond length. All Pu(1)-Co(1) bond lengths are 2.97 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a single-bond geometry to four equivalent Pu(1), three equivalent Eu(2), and one Co(1) atom. All Eu(1)-Eu(2) bond lengths are 2.97 Å. The Eu(1)-Co(1) bond length is 1.52 Å. In the second Eu site, Eu(2) is bonded in a 11-coordinate geometry to four equivalent Pu(1), three equivalent Eu(1), and four equivalent Co(1) atoms. There are three shorter (2.84 Å) and one longer (3.44 Å) Eu(2)-Co(1) bond length. Co(1) is bonded in a single-bond geometry to three equivalent Pu(1), one Eu(1), and four equivalent Eu(2) atoms.