K3SnSb3 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent K(4), two equivalent Sb(1), and two equivalent Sb(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent K(3), two equivalent Sn(1), and two equivalent Sb(3) atoms. In the third K site, K(3) is bonded in a 1-coordinate geometry to one K(2), one Sn(1), one Sb(1), and three equivalent Sb(3) atoms. In the fourth K site, K(4) is bonded in a 1-coordinate geometry to one K(1), one Sn(1), and three equivalent Sb(2) atoms. Sn(1) is bonded in a 6-coordinate geometry to one K(2), one K(3), one K(4), one Sb(1), one Sb(2), and one Sb(3) atom. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 1-coordinate geometry to one K(1), one K(3), one Sn(1), one Sb(2), and one Sb(3) atom. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one K(1), three equivalent K(4), one Sn(1), and one Sb(1) atom. In the third Sb site, Sb(3) is bonded in a 6-coordinate geometry to one K(2), three equivalent K(3), one Sn(1), and one Sb(1) atom.
K3SnSb3 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent K(4), two equivalent Sb(1), and two equivalent Sb(2) atoms. Both K(1)-K(4) bond lengths are 3.30 Å. Both K(1)-Sb(1) bond lengths are 4.04 Å. Both K(1)-Sb(2) bond lengths are 4.09 Å. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent K(3), two equivalent Sn(1), and two equivalent Sb(3) atoms. Both K(2)-K(3) bond lengths are 3.35 Å. Both K(2)-Sn(1) bond lengths are 3.97 Å. Both K(2)-Sb(3) bond lengths are 4.07 Å. In the third K site, K(3) is bonded in a 1-coordinate geometry to one K(2), one Sn(1), one Sb(1), and three equivalent Sb(3) atoms. The K(3)-Sn(1) bond length is 4.00 Å. The K(3)-Sb(1) bond length is 2.84 Å. There are a spread of K(3)-Sb(3) bond distances ranging from 3.69-3.96 Å. In the fourth K site, K(4) is bonded in a 1-coordinate geometry to one K(1), one Sn(1), and three equivalent Sb(2) atoms. The K(4)-Sn(1) bond length is 2.80 Å. There are a spread of K(4)-Sb(2) bond distances ranging from 3.73-4.01 Å. Sn(1) is bonded in a 6-coordinate geometry to one K(2), one K(3), one K(4), one Sb(1), one Sb(2), and one Sb(3) atom. The Sn(1)-Sb(1) bond length is 3.09 Å. The Sn(1)-Sb(2) bond length is 3.39 Å. The Sn(1)-Sb(3) bond length is 2.41 Å. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 1-coordinate geometry to one K(1), one K(3), one Sn(1), one Sb(2), and one Sb(3) atom. The Sb(1)-Sb(2) bond length is 2.35 Å. The Sb(1)-Sb(3) bond length is 3.29 Å. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one K(1), three equivalent K(4), one Sn(1), and one Sb(1) atom. In the third Sb site, Sb(3) is bonded in a 6-coordinate geometry to one K(2), three equivalent K(3), one Sn(1), and one Sb(1) atom.