YbCu5 crystallizes in the hexagonal P6/mmm space group. Yb(1) is bonded in a distorted hexagonal planar geometry to six equivalent Cu(1) and twelve equivalent Cu(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Yb(1), three equivalent Cu(1), and six equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded to four equivalent Yb(1), four equivalent Cu(1), and four equivalent Cu(2) atoms to form a mixture of corner, edge, and face-sharing CuYb4Cu8 cuboctahedra.
YbCu5 crystallizes in the hexagonal P6/mmm space group. Yb(1) is bonded in a distorted hexagonal planar geometry to six equivalent Cu(1) and twelve equivalent Cu(2) atoms. All Yb(1)-Cu(1) bond lengths are 2.82 Å. All Yb(1)-Cu(2) bond lengths are 3.18 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Yb(1), three equivalent Cu(1), and six equivalent Cu(2) atoms. All Cu(1)-Cu(1) bond lengths are 2.82 Å. All Cu(1)-Cu(2) bond lengths are 2.47 Å. In the second Cu site, Cu(2) is bonded to four equivalent Yb(1), four equivalent Cu(1), and four equivalent Cu(2) atoms to form a mixture of corner, edge, and face-sharing CuYb4Cu8 cuboctahedra. All Cu(2)-Cu(2) bond lengths are 2.44 Å.