LuCd2 crystallizes in the trigonal P-3m1 space group. Lu(1) is bonded to two equivalent Lu(1) and six equivalent Cd(1) atoms to form LuLu2Cd6 hexagonal bipyramids that share corners with two equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, corners with six equivalent Cd(1)Lu3Cd5 hexagonal bipyramids, edges with six equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, and edges with eighteen equivalent Cd(1)Lu3Cd5 hexagonal bipyramids. Cd(1) is bonded to three equivalent Lu(1) and five equivalent Cd(1) atoms to form distorted CdLu3Cd5 hexagonal bipyramids that share corners with three equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, corners with five equivalent Cd(1)Lu3Cd5 hexagonal bipyramids, edges with nine equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, and edges with fifteen equivalent Cd(1)Lu3Cd5 hexagonal bipyramids.
LuCd2 crystallizes in the trigonal P-3m1 space group. Lu(1) is bonded to two equivalent Lu(1) and six equivalent Cd(1) atoms to form LuLu2Cd6 hexagonal bipyramids that share corners with two equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, corners with six equivalent Cd(1)Lu3Cd5 hexagonal bipyramids, edges with six equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, and edges with eighteen equivalent Cd(1)Lu3Cd5 hexagonal bipyramids. Both Lu(1)-Lu(1) bond lengths are 3.22 Å. All Lu(1)-Cd(1) bond lengths are 3.11 Å. Cd(1) is bonded to three equivalent Lu(1) and five equivalent Cd(1) atoms to form distorted CdLu3Cd5 hexagonal bipyramids that share corners with three equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, corners with five equivalent Cd(1)Lu3Cd5 hexagonal bipyramids, edges with nine equivalent Lu(1)Lu2Cd6 hexagonal bipyramids, and edges with fifteen equivalent Cd(1)Lu3Cd5 hexagonal bipyramids. There are three shorter (3.12 Å) and two longer (3.22 Å) Cd(1)-Cd(1) bond lengths.