CeNi5 crystallizes in the hexagonal P6/mmm space group. Ce(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ni(2) and twelve equivalent Ni(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to four equivalent Ce(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of corner, face, and edge-sharing NiCe4Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to three equivalent Ce(1), three equivalent Ni(2), and six equivalent Ni(1) atoms.
CeNi5 crystallizes in the hexagonal P6/mmm space group. Ce(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ni(2) and twelve equivalent Ni(1) atoms. All Ce(1)-Ni(2) bond lengths are 2.80 Å. All Ce(1)-Ni(1) bond lengths are 3.13 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to four equivalent Ce(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of corner, face, and edge-sharing NiCe4Ni8 cuboctahedra. All Ni(1)-Ni(1) bond lengths are 2.42 Å. All Ni(1)-Ni(2) bond lengths are 2.42 Å. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to three equivalent Ce(1), three equivalent Ni(2), and six equivalent Ni(1) atoms. All Ni(2)-Ni(2) bond lengths are 2.80 Å.