CeCu5Au crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 19-coordinate geometry to four equivalent Au(1), three equivalent Cu(2), three equivalent Cu(3), three equivalent Cu(4), and six equivalent Cu(1) atoms. Au(1) is bonded in a 14-coordinate geometry to four equivalent Ce(1), one Cu(4), two equivalent Cu(3), three equivalent Cu(2), and four equivalent Cu(1) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Ce(1), two equivalent Au(1), one Cu(2), two equivalent Cu(1), two equivalent Cu(3), and two equivalent Cu(4) atoms to form a mixture of distorted face, edge, and corner-sharing CuCe3Cu7Au2 cuboctahedra. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to three equivalent Ce(1), three equivalent Au(1), two equivalent Cu(1), and two equivalent Cu(3) atoms. In the third Cu site, Cu(3) is bonded to three equivalent Ce(1), two equivalent Au(1), one Cu(4), two equivalent Cu(2), and four equivalent Cu(1) atoms to form a mixture of distorted face, edge, and corner-sharing CuCe3Cu7Au2 cuboctahedra. In the fourth Cu site, Cu(4) is bonded in a 9-coordinate geometry to three equivalent Ce(1), one Au(1), one Cu(3), and four equivalent Cu(1) atoms.
CeCu5Au crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 19-coordinate geometry to four equivalent Au(1), three equivalent Cu(2), three equivalent Cu(3), three equivalent Cu(4), and six equivalent Cu(1) atoms. There are a spread of Ce(1)-Au(1) bond distances ranging from 3.21-3.37 Å. There are two shorter (2.98 Å) and one longer (3.00 Å) Ce(1)-Cu(2) bond length. There are two shorter (3.20 Å) and one longer (3.33 Å) Ce(1)-Cu(3) bond length. There are two shorter (2.93 Å) and one longer (2.97 Å) Ce(1)-Cu(4) bond length. There are a spread of Ce(1)-Cu(1) bond distances ranging from 3.19-3.29 Å. Au(1) is bonded in a 14-coordinate geometry to four equivalent Ce(1), one Cu(4), two equivalent Cu(3), three equivalent Cu(2), and four equivalent Cu(1) atoms. The Au(1)-Cu(4) bond length is 2.72 Å. Both Au(1)-Cu(3) bond lengths are 2.82 Å. There is one shorter (2.63 Å) and two longer (3.00 Å) Au(1)-Cu(2) bond lengths. There are two shorter (2.75 Å) and two longer (2.79 Å) Au(1)-Cu(1) bond lengths. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Ce(1), two equivalent Au(1), one Cu(2), two equivalent Cu(1), two equivalent Cu(3), and two equivalent Cu(4) atoms to form a mixture of distorted face, edge, and corner-sharing CuCe3Cu7Au2 cuboctahedra. The Cu(1)-Cu(2) bond length is 2.47 Å. Both Cu(1)-Cu(1) bond lengths are 2.52 Å. There is one shorter (2.48 Å) and one longer (2.50 Å) Cu(1)-Cu(3) bond length. There is one shorter (2.45 Å) and one longer (2.52 Å) Cu(1)-Cu(4) bond length. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to three equivalent Ce(1), three equivalent Au(1), two equivalent Cu(1), and two equivalent Cu(3) atoms. There is one shorter (2.46 Å) and one longer (2.57 Å) Cu(2)-Cu(3) bond length. In the third Cu site, Cu(3) is bonded to three equivalent Ce(1), two equivalent Au(1), one Cu(4), two equivalent Cu(2), and four equivalent Cu(1) atoms to form a mixture of distorted face, edge, and corner-sharing CuCe3Cu7Au2 cuboctahedra. The Cu(3)-Cu(4) bond length is 2.50 Å. In the fourth Cu site, Cu(4) is bonded in a 9-coordinate geometry to three equivalent Ce(1), one Au(1), one Cu(3), and four equivalent Cu(1) atoms.