K8Sb2Te crystallizes in the tetragonal I-4m2 space group. K(1) is bonded in a trigonal non-coplanar geometry to one Sb(1), one Sb(2), and one Te(1) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the second Sb site, Sb(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the third Sb site, Sb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the fourth Sb site, Sb(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the second Te site, Te(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms.
K8Sb2Te crystallizes in the tetragonal I-4m2 space group. K(1) is bonded in a trigonal non-coplanar geometry to one Sb(1), one Sb(2), and one Te(1) atom. The K(1)-Sb(1) bond length is 3.56 Å. The K(1)-Sb(2) bond length is 3.56 Å. The K(1)-Te(1) bond length is 3.59 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the second Sb site, Sb(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the third Sb site, Sb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. All Sb(1)-K(1) bond lengths are 3.56 Å. In the fourth Sb site, Sb(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. All Sb(2)-K(1) bond lengths are 3.56 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. In the second Te site, Te(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. All Te(1)-K(1) bond lengths are 3.59 Å.