Nd2(AgCu)5 crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 18-coordinate geometry to two equivalent Ag(1), four equivalent Ag(2), four equivalent Ag(3), and eight equivalent Cu(2) atoms. In the second Nd site, Nd(2) is bonded in a distorted hexagonal planar geometry to two equivalent Ag(2), four equivalent Ag(1), four equivalent Cu(1), and eight equivalent Cu(2) atoms. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 9-coordinate geometry to one Nd(1), two equivalent Nd(2), two equivalent Ag(2), two equivalent Cu(1), and four equivalent Cu(2) atoms. In the second Ag site, Ag(2) is bonded in a 12-coordinate geometry to one Nd(2), two equivalent Nd(1), one Ag(2), two equivalent Ag(1), two equivalent Ag(3), and four equivalent Cu(2) atoms. In the third Ag site, Ag(3) is bonded to four equivalent Nd(1), four equivalent Ag(2), and four equivalent Cu(2) atoms to form AgNd4Cu4Ag4 cuboctahedra that share corners with four equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with four equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, edges with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, and faces with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent Nd(2), four equivalent Ag(1), and four equivalent Cu(2) atoms to form CuNd4Cu4Ag4 cuboctahedra that share corners with four equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with four equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, edges with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, and faces with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra. In the second Cu site, Cu(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), one Ag(3), two equivalent Ag(1), two equivalent Ag(2), one Cu(1), and two equivalent Cu(2) atoms to form CuNd4Cu3Ag5 cuboctahedra that share corners with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with twelve equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, edges with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, edges with six equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, faces with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, and faces with six equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra.
Nd2(AgCu)5 crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 18-coordinate geometry to two equivalent Ag(1), four equivalent Ag(2), four equivalent Ag(3), and eight equivalent Cu(2) atoms. Both Nd(1)-Ag(1) bond lengths are 3.13 Å. All Nd(1)-Ag(2) bond lengths are 3.12 Å. All Nd(1)-Ag(3) bond lengths are 3.46 Å. All Nd(1)-Cu(2) bond lengths are 3.55 Å. In the second Nd site, Nd(2) is bonded in a distorted hexagonal planar geometry to two equivalent Ag(2), four equivalent Ag(1), four equivalent Cu(1), and eight equivalent Cu(2) atoms. Both Nd(2)-Ag(2) bond lengths are 3.02 Å. All Nd(2)-Ag(1) bond lengths are 3.06 Å. All Nd(2)-Cu(1) bond lengths are 3.46 Å. All Nd(2)-Cu(2) bond lengths are 3.45 Å. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 9-coordinate geometry to one Nd(1), two equivalent Nd(2), two equivalent Ag(2), two equivalent Cu(1), and four equivalent Cu(2) atoms. Both Ag(1)-Ag(2) bond lengths are 3.01 Å. Both Ag(1)-Cu(1) bond lengths are 2.73 Å. All Ag(1)-Cu(2) bond lengths are 2.69 Å. In the second Ag site, Ag(2) is bonded in a 12-coordinate geometry to one Nd(2), two equivalent Nd(1), one Ag(2), two equivalent Ag(1), two equivalent Ag(3), and four equivalent Cu(2) atoms. The Ag(2)-Ag(2) bond length is 3.35 Å. Both Ag(2)-Ag(3) bond lengths are 2.80 Å. All Ag(2)-Cu(2) bond lengths are 2.71 Å. In the third Ag site, Ag(3) is bonded to four equivalent Nd(1), four equivalent Ag(2), and four equivalent Cu(2) atoms to form AgNd4Cu4Ag4 cuboctahedra that share corners with four equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with four equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, edges with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, and faces with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra. All Ag(3)-Cu(2) bond lengths are 2.77 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent Nd(2), four equivalent Ag(1), and four equivalent Cu(2) atoms to form CuNd4Cu4Ag4 cuboctahedra that share corners with four equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with four equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, edges with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, and faces with eight equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra. All Cu(1)-Cu(2) bond lengths are 2.61 Å. In the second Cu site, Cu(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), one Ag(3), two equivalent Ag(1), two equivalent Ag(2), one Cu(1), and two equivalent Cu(2) atoms to form CuNd4Cu3Ag5 cuboctahedra that share corners with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, corners with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, corners with twelve equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, edges with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, edges with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, edges with six equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra, faces with two equivalent Ag(3)Nd4Cu4Ag4 cuboctahedra, faces with two equivalent Cu(1)Nd4Cu4Ag4 cuboctahedra, and faces with six equivalent Cu(2)Nd4Cu3Ag5 cuboctahedra. There is one shorter (2.61 Å) and one longer (2.66 Å) Cu(2)-Cu(2) bond length.