Ce2RhGe3 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Rh(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms to form CeGe10Rh2 cuboctahedra that share edges with four equivalent Ce(1)Ge10Rh2 cuboctahedra, edges with eight equivalent Ce(2)Ge8Rh4 cuboctahedra, faces with four equivalent Ce(1)Ge10Rh2 cuboctahedra, and faces with four equivalent Ce(2)Ge8Rh4 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Rh(1), two equivalent Ge(1), two equivalent Ge(2), and four equivalent Ge(3) atoms to form CeGe8Rh4 cuboctahedra that share edges with four equivalent Ce(2)Ge8Rh4 cuboctahedra, edges with eight equivalent Ce(1)Ge10Rh2 cuboctahedra, faces with four equivalent Ce(1)Ge10Rh2 cuboctahedra, and faces with four equivalent Ce(2)Ge8Rh4 cuboctahedra. Rh(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Ge(3), and two equivalent Ge(2) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Ge(2), and two equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Rh(1), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Rh(1), and two equivalent Ge(1) atoms.
Ce2RhGe3 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Rh(1), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms to form CeGe10Rh2 cuboctahedra that share edges with four equivalent Ce(1)Ge10Rh2 cuboctahedra, edges with eight equivalent Ce(2)Ge8Rh4 cuboctahedra, faces with four equivalent Ce(1)Ge10Rh2 cuboctahedra, and faces with four equivalent Ce(2)Ge8Rh4 cuboctahedra. Both Ce(1)-Rh(1) bond lengths are 3.09 Å. Both Ce(1)-Ge(3) bond lengths are 3.22 Å. All Ce(1)-Ge(1) bond lengths are 3.23 Å. All Ce(1)-Ge(2) bond lengths are 3.20 Å. In the second Ce site, Ce(2) is bonded to four equivalent Rh(1), two equivalent Ge(1), two equivalent Ge(2), and four equivalent Ge(3) atoms to form CeGe8Rh4 cuboctahedra that share edges with four equivalent Ce(2)Ge8Rh4 cuboctahedra, edges with eight equivalent Ce(1)Ge10Rh2 cuboctahedra, faces with four equivalent Ce(1)Ge10Rh2 cuboctahedra, and faces with four equivalent Ce(2)Ge8Rh4 cuboctahedra. All Ce(2)-Rh(1) bond lengths are 3.20 Å. Both Ce(2)-Ge(1) bond lengths are 3.18 Å. Both Ce(2)-Ge(2) bond lengths are 3.10 Å. All Ce(2)-Ge(3) bond lengths are 3.22 Å. Rh(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Ge(3), and two equivalent Ge(2) atoms. The Rh(1)-Ge(3) bond length is 2.46 Å. Both Rh(1)-Ge(2) bond lengths are 2.48 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Ge(2), and two equivalent Ge(3) atoms. The Ge(1)-Ge(2) bond length is 2.48 Å. Both Ge(1)-Ge(3) bond lengths are 2.52 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Rh(1), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Rh(1), and two equivalent Ge(1) atoms.