PuNiGa crystallizes in the monoclinic Pm space group. There are three inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. In the second Pu site, Pu(2) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. In the third Pu site, Pu(3) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ga(1), one Ga(2), and one Ga(3) atom. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ga(1), one Ga(2), and one Ga(3) atom. In the third Ni site, Ni(3) is bonded in a distorted q6 geometry to one Pu(1), one Pu(2), one Pu(3), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(2), and one Ga(3) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra. In the second Ga site, Ga(2) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(1), and one Ga(3) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra. In the third Ga site, Ga(3) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(1), and one Ga(2) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra.
PuNiGa crystallizes in the monoclinic Pm space group. There are three inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. The Pu(1)-Ni(3) bond length is 2.89 Å. Both Pu(1)-Ni(1) bond lengths are 2.84 Å. Both Pu(1)-Ni(2) bond lengths are 2.83 Å. Both Pu(1)-Ga(1) bond lengths are 3.05 Å. Both Pu(1)-Ga(2) bond lengths are 3.19 Å. Both Pu(1)-Ga(3) bond lengths are 3.20 Å. In the second Pu site, Pu(2) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. The Pu(2)-Ni(3) bond length is 2.88 Å. Both Pu(2)-Ni(1) bond lengths are 2.84 Å. Both Pu(2)-Ni(2) bond lengths are 2.83 Å. Both Pu(2)-Ga(1) bond lengths are 3.19 Å. Both Pu(2)-Ga(2) bond lengths are 3.05 Å. Both Pu(2)-Ga(3) bond lengths are 3.21 Å. In the third Pu site, Pu(3) is bonded in a 11-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. The Pu(3)-Ni(3) bond length is 2.87 Å. Both Pu(3)-Ni(1) bond lengths are 2.84 Å. Both Pu(3)-Ni(2) bond lengths are 2.84 Å. Both Pu(3)-Ga(1) bond lengths are 3.20 Å. Both Pu(3)-Ga(2) bond lengths are 3.21 Å. Both Pu(3)-Ga(3) bond lengths are 3.04 Å. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ga(1), one Ga(2), and one Ga(3) atom. The Ni(1)-Ga(1) bond length is 2.64 Å. The Ni(1)-Ga(2) bond length is 2.64 Å. The Ni(1)-Ga(3) bond length is 2.66 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ga(1), one Ga(2), and one Ga(3) atom. The Ni(2)-Ga(1) bond length is 2.65 Å. The Ni(2)-Ga(2) bond length is 2.65 Å. The Ni(2)-Ga(3) bond length is 2.65 Å. In the third Ni site, Ni(3) is bonded in a distorted q6 geometry to one Pu(1), one Pu(2), one Pu(3), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. Both Ni(3)-Ga(1) bond lengths are 2.54 Å. Both Ni(3)-Ga(2) bond lengths are 2.55 Å. Both Ni(3)-Ga(3) bond lengths are 2.55 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(2), and one Ga(3) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra. The Ga(1)-Ga(2) bond length is 2.73 Å. The Ga(1)-Ga(3) bond length is 2.72 Å. In the second Ga site, Ga(2) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(1), and one Ga(3) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra. The Ga(2)-Ga(3) bond length is 2.72 Å. In the third Ga site, Ga(3) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), one Ni(1), one Ni(2), two equivalent Ni(3), one Ga(1), and one Ga(2) atom to form a mixture of distorted edge, corner, and face-sharing GaPu6Ga2Ni4 cuboctahedra.