K3SnSb3 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Cm space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one Sn(1), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to two equivalent Sn(1), one Sb(3), two equivalent Sb(1), and two equivalent Sb(2) atoms. In the third K site, K(3) is bonded in a 7-coordinate geometry to one Sn(1), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. Sn(1) is bonded in a 6-coordinate geometry to one K(1), one K(3), two equivalent K(2), one Sb(3), and two equivalent Sb(2) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent K(2), two equivalent K(3), and two equivalent Sb(3) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent K(2), two equivalent K(3), and two equivalent Sn(1) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to one K(2), two equivalent K(1), two equivalent K(3), one Sn(1), and two equivalent Sb(1) atoms.
K3SnSb3 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Cm space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one Sn(1), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. The K(1)-Sn(1) bond length is 3.62 Å. Both K(1)-Sb(1) bond lengths are 3.78 Å. Both K(1)-Sb(2) bond lengths are 3.68 Å. There is one shorter (3.66 Å) and one longer (3.98 Å) K(1)-Sb(3) bond length. In the second K site, K(2) is bonded in a 5-coordinate geometry to two equivalent Sn(1), one Sb(3), two equivalent Sb(1), and two equivalent Sb(2) atoms. Both K(2)-Sn(1) bond lengths are 3.64 Å. The K(2)-Sb(3) bond length is 4.05 Å. Both K(2)-Sb(1) bond lengths are 3.70 Å. There is one shorter (3.66 Å) and one longer (3.94 Å) K(2)-Sb(2) bond length. In the third K site, K(3) is bonded in a 7-coordinate geometry to one Sn(1), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. The K(3)-Sn(1) bond length is 3.93 Å. There is one shorter (3.71 Å) and one longer (3.92 Å) K(3)-Sb(1) bond length. Both K(3)-Sb(2) bond lengths are 3.68 Å. Both K(3)-Sb(3) bond lengths are 3.74 Å. Sn(1) is bonded in a 6-coordinate geometry to one K(1), one K(3), two equivalent K(2), one Sb(3), and two equivalent Sb(2) atoms. The Sn(1)-Sb(3) bond length is 2.96 Å. Both Sn(1)-Sb(2) bond lengths are 2.92 Å. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent K(2), two equivalent K(3), and two equivalent Sb(3) atoms. Both Sb(1)-Sb(3) bond lengths are 2.90 Å. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to two equivalent K(1), two equivalent K(2), two equivalent K(3), and two equivalent Sn(1) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to one K(2), two equivalent K(1), two equivalent K(3), one Sn(1), and two equivalent Sb(1) atoms.