CeCuGa3 crystallizes in the tetragonal I-4m2 space group. Ce(1) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Ga(2), and eight equivalent Ga(1) atoms. Cu(1) is bonded to four equivalent Ce(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted CuCe4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, corners with twelve equivalent Cu(1)Ce4Ga8 cuboctahedra, edges with two equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, faces with four equivalent Cu(1)Ce4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), two equivalent Cu(1), one Ga(1), and two equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded to four equivalent Ce(1), four equivalent Cu(1), and four equivalent Ga(1) atoms to form GaCe4Ga4Cu4 cuboctahedra that share corners with four equivalent Cu(1)Ce4Ga8 cuboctahedra, corners with twelve equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, edges with two equivalent Cu(1)Ce4Ga8 cuboctahedra, faces with four equivalent Cu(1)Ce4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra.
CeCuGa3 crystallizes in the tetragonal I-4m2 space group. Ce(1) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Ga(2), and eight equivalent Ga(1) atoms. All Ce(1)-Cu(1) bond lengths are 3.36 Å. All Ce(1)-Ga(2) bond lengths are 3.36 Å. All Ce(1)-Ga(1) bond lengths are 3.22 Å. Cu(1) is bonded to four equivalent Ce(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted CuCe4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, corners with twelve equivalent Cu(1)Ce4Ga8 cuboctahedra, edges with two equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, faces with four equivalent Cu(1)Ce4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra. All Cu(1)-Ga(1) bond lengths are 2.51 Å. All Cu(1)-Ga(2) bond lengths are 2.97 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), two equivalent Cu(1), one Ga(1), and two equivalent Ga(2) atoms. The Ga(1)-Ga(1) bond length is 2.48 Å. Both Ga(1)-Ga(2) bond lengths are 2.51 Å. In the second Ga site, Ga(2) is bonded to four equivalent Ce(1), four equivalent Cu(1), and four equivalent Ga(1) atoms to form GaCe4Ga4Cu4 cuboctahedra that share corners with four equivalent Cu(1)Ce4Ga8 cuboctahedra, corners with twelve equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra, edges with two equivalent Cu(1)Ce4Ga8 cuboctahedra, faces with four equivalent Cu(1)Ce4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Ce4Ga4Cu4 cuboctahedra.