Ce3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Zn(2), four equivalent Zn(3), and eight equivalent Zn(1) atoms to form distorted CeZn16 cuboctahedra that share corners with four equivalent Zn(4)Zn8 cuboctahedra, faces with two equivalent Ce(1)Zn16 cuboctahedra, and faces with two equivalent Zn(4)Zn8 cuboctahedra. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to two equivalent Zn(3), six equivalent Zn(1), and six equivalent Zn(2) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Zn(1), one Zn(3), and three equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to one Ce(1), three equivalent Ce(2), one Zn(4), two equivalent Zn(3), and three equivalent Zn(1) atoms. In the third Zn site, Zn(3) is bonded in a 13-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), one Zn(3), two equivalent Zn(1), two equivalent Zn(4), and four equivalent Zn(2) atoms. In the fourth Zn site, Zn(4) is bonded to four equivalent Zn(2) and four equivalent Zn(3) atoms to form distorted ZnZn8 cuboctahedra that share corners with four equivalent Ce(1)Zn16 cuboctahedra, edges with two equivalent Zn(4)Zn8 cuboctahedra, and faces with two equivalent Ce(1)Zn16 cuboctahedra.
Ce3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Zn(2), four equivalent Zn(3), and eight equivalent Zn(1) atoms to form distorted CeZn16 cuboctahedra that share corners with four equivalent Zn(4)Zn8 cuboctahedra, faces with two equivalent Ce(1)Zn16 cuboctahedra, and faces with two equivalent Zn(4)Zn8 cuboctahedra. All Ce(1)-Zn(2) bond lengths are 3.12 Å. All Ce(1)-Zn(3) bond lengths are 3.58 Å. All Ce(1)-Zn(1) bond lengths are 3.30 Å. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to two equivalent Zn(3), six equivalent Zn(1), and six equivalent Zn(2) atoms. Both Ce(2)-Zn(3) bond lengths are 3.15 Å. There are four shorter (3.15 Å) and two longer (3.19 Å) Ce(2)-Zn(1) bond lengths. There are four shorter (3.04 Å) and two longer (3.22 Å) Ce(2)-Zn(2) bond lengths. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Zn(1), one Zn(3), and three equivalent Zn(2) atoms. The Zn(1)-Zn(1) bond length is 2.50 Å. The Zn(1)-Zn(3) bond length is 2.59 Å. There are two shorter (2.57 Å) and one longer (2.76 Å) Zn(1)-Zn(2) bond length. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to one Ce(1), three equivalent Ce(2), one Zn(4), two equivalent Zn(3), and three equivalent Zn(1) atoms. The Zn(2)-Zn(4) bond length is 2.65 Å. Both Zn(2)-Zn(3) bond lengths are 2.93 Å. In the third Zn site, Zn(3) is bonded in a 13-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), one Zn(3), two equivalent Zn(1), two equivalent Zn(4), and four equivalent Zn(2) atoms. The Zn(3)-Zn(3) bond length is 3.14 Å. Both Zn(3)-Zn(4) bond lengths are 2.73 Å. In the fourth Zn site, Zn(4) is bonded to four equivalent Zn(2) and four equivalent Zn(3) atoms to form distorted ZnZn8 cuboctahedra that share corners with four equivalent Ce(1)Zn16 cuboctahedra, edges with two equivalent Zn(4)Zn8 cuboctahedra, and faces with two equivalent Ce(1)Zn16 cuboctahedra.