CsZn8 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the orthorhombic Imm2 space group. Cs(1) is bonded in a 17-coordinate geometry to two equivalent Cs(1), one Zn(4), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(5), four equivalent Zn(2), and four equivalent Zn(6) atoms. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Cs(1), two equivalent Zn(1), two equivalent Zn(2), and four equivalent Zn(6) atoms. In the second Zn site, Zn(2) is bonded to four equivalent Cs(1), two equivalent Zn(1), two equivalent Zn(2), and four equivalent Zn(5) atoms to form distorted ZnCs4Zn8 cuboctahedra that share corners with six equivalent Zn(2)Cs4Zn8 cuboctahedra, corners with eight equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with two equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with four equivalent Zn(3)Cs2Zn10 cuboctahedra, edges with six equivalent Zn(6)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(6)Cs2Zn10 cuboctahedra, and faces with two equivalent Zn(2)Cs4Zn8 cuboctahedra. In the third Zn site, Zn(3) is bonded to two equivalent Cs(1), two equivalent Zn(3), four equivalent Zn(5), and four equivalent Zn(6) atoms to form distorted ZnCs2Zn10 cuboctahedra that share corners with two equivalent Zn(3)Cs2Zn10 cuboctahedra, corners with four equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with four equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with six equivalent Zn(6)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(2)Cs4Zn8 cuboctahedra, and faces with four equivalent Zn(6)Cs2Zn10 cuboctahedra. In the fourth Zn site, Zn(4) is bonded in a 11-coordinate geometry to one Cs(1), two equivalent Zn(4), four equivalent Zn(5), and four equivalent Zn(6) atoms. In the fifth Zn site, Zn(5) is bonded in a 11-coordinate geometry to one Cs(1), one Zn(6), two equivalent Zn(2), two equivalent Zn(3), two equivalent Zn(4), and three equivalent Zn(5) atoms. In the sixth Zn site, Zn(6) is bonded to two equivalent Cs(1), one Zn(5), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and three equivalent Zn(6) atoms to form ZnCs2Zn10 cuboctahedra that share corners with two equivalent Zn(3)Cs2Zn10 cuboctahedra, corners with two equivalent Zn(6)Cs2Zn10 cuboctahedra, corners with four equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with two equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with three equivalent Zn(3)Cs2Zn10 cuboctahedra, edges with three equivalent Zn(2)Cs4Zn8 cuboctahedra,  a faceface with one Zn(2)Cs4Zn8 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, and faces with six equivalent Zn(6)Cs2Zn10 cuboctahedra.
CsZn8 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the orthorhombic Imm2 space group. Cs(1) is bonded in a 17-coordinate geometry to two equivalent Cs(1), one Zn(4), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(5), four equivalent Zn(2), and four equivalent Zn(6) atoms. Both Cs(1)-Cs(1) bond lengths are 2.94 Å. The Cs(1)-Zn(4) bond length is 3.67 Å. Both Cs(1)-Zn(1) bond lengths are 3.74 Å. Both Cs(1)-Zn(3) bond lengths are 3.94 Å. Both Cs(1)-Zn(5) bond lengths are 3.60 Å. All Cs(1)-Zn(2) bond lengths are 4.01 Å. All Cs(1)-Zn(6) bond lengths are 3.89 Å. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Cs(1), two equivalent Zn(1), two equivalent Zn(2), and four equivalent Zn(6) atoms. Both Zn(1)-Zn(1) bond lengths are 2.94 Å. Both Zn(1)-Zn(2) bond lengths are 2.72 Å. All Zn(1)-Zn(6) bond lengths are 2.70 Å. In the second Zn site, Zn(2) is bonded to four equivalent Cs(1), two equivalent Zn(1), two equivalent Zn(2), and four equivalent Zn(5) atoms to form distorted ZnCs4Zn8 cuboctahedra that share corners with six equivalent Zn(2)Cs4Zn8 cuboctahedra, corners with eight equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with two equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with four equivalent Zn(3)Cs2Zn10 cuboctahedra, edges with six equivalent Zn(6)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(6)Cs2Zn10 cuboctahedra, and faces with two equivalent Zn(2)Cs4Zn8 cuboctahedra. Both Zn(2)-Zn(2) bond lengths are 2.94 Å. All Zn(2)-Zn(5) bond lengths are 2.70 Å. In the third Zn site, Zn(3) is bonded to two equivalent Cs(1), two equivalent Zn(3), four equivalent Zn(5), and four equivalent Zn(6) atoms to form distorted ZnCs2Zn10 cuboctahedra that share corners with two equivalent Zn(3)Cs2Zn10 cuboctahedra, corners with four equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with four equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with six equivalent Zn(6)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, faces with two equivalent Zn(2)Cs4Zn8 cuboctahedra, and faces with four equivalent Zn(6)Cs2Zn10 cuboctahedra. Both Zn(3)-Zn(3) bond lengths are 2.94 Å. All Zn(3)-Zn(5) bond lengths are 2.70 Å. All Zn(3)-Zn(6) bond lengths are 2.89 Å. In the fourth Zn site, Zn(4) is bonded in a 11-coordinate geometry to one Cs(1), two equivalent Zn(4), four equivalent Zn(5), and four equivalent Zn(6) atoms. Both Zn(4)-Zn(4) bond lengths are 2.94 Å. All Zn(4)-Zn(5) bond lengths are 2.88 Å. All Zn(4)-Zn(6) bond lengths are 2.69 Å. In the fifth Zn site, Zn(5) is bonded in a 11-coordinate geometry to one Cs(1), one Zn(6), two equivalent Zn(2), two equivalent Zn(3), two equivalent Zn(4), and three equivalent Zn(5) atoms. The Zn(5)-Zn(6) bond length is 2.87 Å. There is one shorter (2.84 Å) and two longer (2.94 Å) Zn(5)-Zn(5) bond lengths. In the sixth Zn site, Zn(6) is bonded to two equivalent Cs(1), one Zn(5), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and three equivalent Zn(6) atoms to form ZnCs2Zn10 cuboctahedra that share corners with two equivalent Zn(3)Cs2Zn10 cuboctahedra, corners with two equivalent Zn(6)Cs2Zn10 cuboctahedra, corners with four equivalent Zn(2)Cs4Zn8 cuboctahedra, edges with two equivalent Zn(6)Cs2Zn10 cuboctahedra, edges with three equivalent Zn(3)Cs2Zn10 cuboctahedra, edges with three equivalent Zn(2)Cs4Zn8 cuboctahedra,  a faceface with one Zn(2)Cs4Zn8 cuboctahedra, faces with two equivalent Zn(3)Cs2Zn10 cuboctahedra, and faces with six equivalent Zn(6)Cs2Zn10 cuboctahedra. There is one shorter (2.87 Å) and two longer (2.94 Å) Zn(6)-Zn(6) bond lengths.