Pu3Nd crystallizes in the monoclinic Pm space group. There are six inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 12-coordinate geometry to two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(5), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms. In the second Pu site, Pu(2) is bonded to two equivalent Pu(1), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms to form distorted PuNd4Pu8 cuboctahedra that share corners with four equivalent Nd(2)Pu12 cuboctahedra, corners with six equivalent Pu(2)Nd4Pu8 cuboctahedra, edges with two equivalent Nd(2)Pu12 cuboctahedra, edges with four equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Pu(5)Nd4Pu8 cuboctahedra. In the third Pu site, Pu(3) is bonded in a 12-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(4), two equivalent Pu(5), two equivalent Nd(1), and two equivalent Nd(2) atoms. In the fourth Pu site, Pu(4) is bonded in a 12-coordinate geometry to two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(5), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms. In the fifth Pu site, Pu(5) is bonded to two equivalent Pu(1), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms to form distorted PuNd4Pu8 cuboctahedra that share corners with four equivalent Nd(1)Pu12 cuboctahedra, corners with six equivalent Pu(5)Nd4Pu8 cuboctahedra, edges with two equivalent Nd(1)Pu12 cuboctahedra, edges with four equivalent Nd(2)Pu12 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Pu(2)Nd4Pu8 cuboctahedra. In the sixth Pu site, Pu(6) is bonded in a 12-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(4), two equivalent Pu(5), two equivalent Nd(1), and two equivalent Nd(2) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(5), and two equivalent Pu(6) atoms to form NdPu12 cuboctahedra that share corners with four equivalent Pu(5)Nd4Pu8 cuboctahedra, corners with six equivalent Nd(1)Pu12 cuboctahedra, edges with two equivalent Pu(5)Nd4Pu8 cuboctahedra, edges with four equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, and faces with six equivalent Nd(2)Pu12 cuboctahedra. In the second Nd site, Nd(2) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(5), and two equivalent Pu(6) atoms to form NdPu12 cuboctahedra that share corners with four equivalent Pu(2)Nd4Pu8 cuboctahedra, corners with six equivalent Nd(2)Pu12 cuboctahedra, edges with two equivalent Pu(2)Nd4Pu8 cuboctahedra, edges with four equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Nd(1)Pu12 cuboctahedra.
Pu3Nd crystallizes in the monoclinic Pm space group. There are six inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 12-coordinate geometry to two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(5), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms. There is one shorter (3.42 Å) and one longer (3.50 Å) Pu(1)-Pu(2) bond length. There is one shorter (3.01 Å) and one longer (3.82 Å) Pu(1)-Pu(3) bond length. Both Pu(1)-Pu(5) bond lengths are 3.22 Å. Both Pu(1)-Pu(6) bond lengths are 3.41 Å. Both Pu(1)-Nd(1) bond lengths are 3.42 Å. There is one shorter (3.43 Å) and one longer (3.49 Å) Pu(1)-Nd(2) bond length. In the second Pu site, Pu(2) is bonded to two equivalent Pu(1), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms to form distorted PuNd4Pu8 cuboctahedra that share corners with four equivalent Nd(2)Pu12 cuboctahedra, corners with six equivalent Pu(2)Nd4Pu8 cuboctahedra, edges with two equivalent Nd(2)Pu12 cuboctahedra, edges with four equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Pu(5)Nd4Pu8 cuboctahedra. There is one shorter (3.26 Å) and one longer (3.66 Å) Pu(2)-Pu(3) bond length. Both Pu(2)-Pu(4) bond lengths are 3.26 Å. Both Pu(2)-Pu(6) bond lengths are 3.23 Å. Both Pu(2)-Nd(1) bond lengths are 3.44 Å. There is one shorter (3.41 Å) and one longer (3.42 Å) Pu(2)-Nd(2) bond length. In the third Pu site, Pu(3) is bonded in a 12-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(4), two equivalent Pu(5), two equivalent Nd(1), and two equivalent Nd(2) atoms. Both Pu(3)-Pu(4) bond lengths are 3.28 Å. Both Pu(3)-Pu(5) bond lengths are 3.29 Å. Both Pu(3)-Nd(1) bond lengths are 3.42 Å. There is one shorter (3.39 Å) and one longer (3.55 Å) Pu(3)-Nd(2) bond length. In the fourth Pu site, Pu(4) is bonded in a 12-coordinate geometry to two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(5), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms. There is one shorter (3.37 Å) and one longer (3.55 Å) Pu(4)-Pu(5) bond length. There is one shorter (3.01 Å) and one longer (3.82 Å) Pu(4)-Pu(6) bond length. There is one shorter (3.38 Å) and one longer (3.55 Å) Pu(4)-Nd(1) bond length. Both Pu(4)-Nd(2) bond lengths are 3.41 Å. In the fifth Pu site, Pu(5) is bonded to two equivalent Pu(1), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(6), two equivalent Nd(1), and two equivalent Nd(2) atoms to form distorted PuNd4Pu8 cuboctahedra that share corners with four equivalent Nd(1)Pu12 cuboctahedra, corners with six equivalent Pu(5)Nd4Pu8 cuboctahedra, edges with two equivalent Nd(1)Pu12 cuboctahedra, edges with four equivalent Nd(2)Pu12 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Pu(2)Nd4Pu8 cuboctahedra. There is one shorter (3.36 Å) and one longer (3.57 Å) Pu(5)-Pu(6) bond length. There is one shorter (3.40 Å) and one longer (3.43 Å) Pu(5)-Nd(1) bond length. Both Pu(5)-Nd(2) bond lengths are 3.43 Å. In the sixth Pu site, Pu(6) is bonded in a 12-coordinate geometry to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(4), two equivalent Pu(5), two equivalent Nd(1), and two equivalent Nd(2) atoms. There is one shorter (3.42 Å) and one longer (3.52 Å) Pu(6)-Nd(1) bond length. Both Pu(6)-Nd(2) bond lengths are 3.43 Å. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(5), and two equivalent Pu(6) atoms to form NdPu12 cuboctahedra that share corners with four equivalent Pu(5)Nd4Pu8 cuboctahedra, corners with six equivalent Nd(1)Pu12 cuboctahedra, edges with two equivalent Pu(5)Nd4Pu8 cuboctahedra, edges with four equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(1)Pu12 cuboctahedra, and faces with six equivalent Nd(2)Pu12 cuboctahedra. In the second Nd site, Nd(2) is bonded to two equivalent Pu(1), two equivalent Pu(2), two equivalent Pu(3), two equivalent Pu(4), two equivalent Pu(5), and two equivalent Pu(6) atoms to form NdPu12 cuboctahedra that share corners with four equivalent Pu(2)Nd4Pu8 cuboctahedra, corners with six equivalent Nd(2)Pu12 cuboctahedra, edges with two equivalent Pu(2)Nd4Pu8 cuboctahedra, edges with four equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(2)Nd4Pu8 cuboctahedra, faces with two equivalent Pu(5)Nd4Pu8 cuboctahedra, faces with two equivalent Nd(2)Pu12 cuboctahedra, and faces with six equivalent Nd(1)Pu12 cuboctahedra.