Ce(NiCd10)2 crystallizes in the cubic Fd-3m space group. Ce(1) is bonded in a 16-coordinate geometry to four equivalent Cd(3) and twelve equivalent Cd(1) atoms. Ni(1) is bonded to six equivalent Cd(1) and six equivalent Cd(2) atoms to form NiCd12 cuboctahedra that share corners with six equivalent Ni(1)Cd12 cuboctahedra, edges with eighteen equivalent Cd(1)CeCd10Ni cuboctahedra, and faces with six equivalent Cd(1)CeCd10Ni cuboctahedra. There are three inequivalent Cd sites. In the first Cd site, Cd(2) is bonded in a distorted linear geometry to two equivalent Ni(1), four equivalent Cd(2), and six equivalent Cd(1) atoms. In the second Cd site, Cd(1) is bonded to one Ce(1), one Ni(1), two equivalent Cd(3), three equivalent Cd(2), and five equivalent Cd(1) atoms to form distorted CdCeCd10Ni cuboctahedra that share corners with fifteen equivalent Cd(1)CeCd10Ni cuboctahedra, edges with two equivalent Cd(1)CeCd10Ni cuboctahedra, edges with three equivalent Ni(1)Cd12 cuboctahedra,  a faceface with one Ni(1)Cd12 cuboctahedra, and faces with fifteen equivalent Cd(1)CeCd10Ni cuboctahedra. In the third Cd site, Cd(3) is bonded in a distorted linear geometry to two equivalent Ce(1) and twelve equivalent Cd(1) atoms.
Ce(NiCd10)2 crystallizes in the cubic Fd-3m space group. Ce(1) is bonded in a 16-coordinate geometry to four equivalent Cd(3) and twelve equivalent Cd(1) atoms. All Ce(1)-Cd(3) bond lengths are 3.43 Å. All Ce(1)-Cd(1) bond lengths are 3.48 Å. Ni(1) is bonded to six equivalent Cd(1) and six equivalent Cd(2) atoms to form NiCd12 cuboctahedra that share corners with six equivalent Ni(1)Cd12 cuboctahedra, edges with eighteen equivalent Cd(1)CeCd10Ni cuboctahedra, and faces with six equivalent Cd(1)CeCd10Ni cuboctahedra. All Ni(1)-Cd(1) bond lengths are 3.07 Å. All Ni(1)-Cd(2) bond lengths are 2.80 Å. There are three inequivalent Cd sites. In the first Cd site, Cd(2) is bonded in a distorted linear geometry to two equivalent Ni(1), four equivalent Cd(2), and six equivalent Cd(1) atoms. All Cd(2)-Cd(2) bond lengths are 3.05 Å. There are two shorter (2.98 Å) and four longer (3.12 Å) Cd(2)-Cd(1) bond lengths. In the second Cd site, Cd(1) is bonded to one Ce(1), one Ni(1), two equivalent Cd(3), three equivalent Cd(2), and five equivalent Cd(1) atoms to form distorted CdCeCd10Ni cuboctahedra that share corners with fifteen equivalent Cd(1)CeCd10Ni cuboctahedra, edges with two equivalent Cd(1)CeCd10Ni cuboctahedra, edges with three equivalent Ni(1)Cd12 cuboctahedra,  a faceface with one Ni(1)Cd12 cuboctahedra, and faces with fifteen equivalent Cd(1)CeCd10Ni cuboctahedra. Both Cd(1)-Cd(3) bond lengths are 3.37 Å. There are a spread of Cd(1)-Cd(1) bond distances ranging from 2.93-3.20 Å. In the third Cd site, Cd(3) is bonded in a distorted linear geometry to two equivalent Ce(1) and twelve equivalent Cd(1) atoms.