CeNi4Ga crystallizes in the hexagonal P-6m2 space group. Ce(1) is bonded in a 18-coordinate geometry to three equivalent Ni(1), twelve equivalent Ni(2), and three equivalent Ga(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to three equivalent Ce(1), six equivalent Ni(2), and three equivalent Ga(1) atoms to form distorted NiCe3Ga3Ni6 cuboctahedra that share corners with nine equivalent Ga(1)Ce3Ni9 cuboctahedra, corners with twelve equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with six equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with two equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with three equivalent Ga(1)Ce3Ni9 cuboctahedra, and faces with eighteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra. In the second Ni site, Ni(2) is bonded to four equivalent Ce(1), two equivalent Ni(1), four equivalent Ni(2), and two equivalent Ga(1) atoms to form distorted NiCe4Ga2Ni6 cuboctahedra that share corners with four equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, corners with four equivalent Ga(1)Ce3Ni9 cuboctahedra, corners with sixteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with ten equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, faces with six equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with six equivalent Ga(1)Ce3Ni9 cuboctahedra, and faces with ten equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra. Ga(1) is bonded to three equivalent Ce(1), three equivalent Ni(1), and six equivalent Ni(2) atoms to form distorted GaCe3Ni9 cuboctahedra that share corners with nine equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, corners with twelve equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with six equivalent Ga(1)Ce3Ni9 cuboctahedra, faces with two equivalent Ga(1)Ce3Ni9 cuboctahedra, faces with three equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, and faces with eighteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra.
CeNi4Ga crystallizes in the hexagonal P-6m2 space group. Ce(1) is bonded in a 18-coordinate geometry to three equivalent Ni(1), twelve equivalent Ni(2), and three equivalent Ga(1) atoms. All Ce(1)-Ni(1) bond lengths are 2.94 Å. All Ce(1)-Ni(2) bond lengths are 3.20 Å. All Ce(1)-Ga(1) bond lengths are 2.94 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to three equivalent Ce(1), six equivalent Ni(2), and three equivalent Ga(1) atoms to form distorted NiCe3Ga3Ni6 cuboctahedra that share corners with nine equivalent Ga(1)Ce3Ni9 cuboctahedra, corners with twelve equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with six equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with two equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with three equivalent Ga(1)Ce3Ni9 cuboctahedra, and faces with eighteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra. All Ni(1)-Ni(2) bond lengths are 2.42 Å. All Ni(1)-Ga(1) bond lengths are 2.94 Å. In the second Ni site, Ni(2) is bonded to four equivalent Ce(1), two equivalent Ni(1), four equivalent Ni(2), and two equivalent Ga(1) atoms to form distorted NiCe4Ga2Ni6 cuboctahedra that share corners with four equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, corners with four equivalent Ga(1)Ce3Ni9 cuboctahedra, corners with sixteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with ten equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, faces with six equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, faces with six equivalent Ga(1)Ce3Ni9 cuboctahedra, and faces with ten equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra. There are two shorter (2.50 Å) and two longer (2.59 Å) Ni(2)-Ni(2) bond lengths. Both Ni(2)-Ga(1) bond lengths are 2.45 Å. Ga(1) is bonded to three equivalent Ce(1), three equivalent Ni(1), and six equivalent Ni(2) atoms to form distorted GaCe3Ni9 cuboctahedra that share corners with nine equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, corners with twelve equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra, edges with six equivalent Ga(1)Ce3Ni9 cuboctahedra, faces with two equivalent Ga(1)Ce3Ni9 cuboctahedra, faces with three equivalent Ni(1)Ce3Ga3Ni6 cuboctahedra, and faces with eighteen equivalent Ni(2)Ce4Ga2Ni6 cuboctahedra.