K8ZnTl10 crystallizes in the tetragonal P4/nnc space group. K(1) is bonded in a 6-coordinate geometry to one Tl(2) and five equivalent Tl(1) atoms. Zn(1) is bonded in a distorted q6 geometry to two equivalent Tl(2) and eight equivalent Tl(1) atoms. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 9-coordinate geometry to five equivalent K(1), one Zn(1), one Tl(2), and two equivalent Tl(1) atoms. In the second Tl site, Tl(2) is bonded in a distorted q6 geometry to four equivalent K(1), one Zn(1), and four equivalent Tl(1) atoms.
K8ZnTl10 crystallizes in the tetragonal P4/nnc space group. K(1) is bonded in a 6-coordinate geometry to one Tl(2) and five equivalent Tl(1) atoms. The K(1)-Tl(2) bond length is 3.75 Å. There are a spread of K(1)-Tl(1) bond distances ranging from 3.53-3.94 Å. Zn(1) is bonded in a distorted q6 geometry to two equivalent Tl(2) and eight equivalent Tl(1) atoms. Both Zn(1)-Tl(2) bond lengths are 2.90 Å. All Zn(1)-Tl(1) bond lengths are 2.93 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 9-coordinate geometry to five equivalent K(1), one Zn(1), one Tl(2), and two equivalent Tl(1) atoms. The Tl(1)-Tl(2) bond length is 3.14 Å. There is one shorter (3.15 Å) and one longer (3.25 Å) Tl(1)-Tl(1) bond length. In the second Tl site, Tl(2) is bonded in a distorted q6 geometry to four equivalent K(1), one Zn(1), and four equivalent Tl(1) atoms.