K2TeClF5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to three equivalent Cl(1), one F(1), one F(4), one F(5), and two equivalent F(2) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Cl(1), one F(1), one F(2), one F(4), and three equivalent F(3) atoms. Te(1) is bonded in a square pyramidal geometry to one F(1), one F(2), one F(3), one F(4), and one F(5) atom. Cl(1) is bonded to two equivalent K(2) and three equivalent K(1) atoms to form ClK5 square pyramids that share corners with two equivalent F(2)K3Te tetrahedra, edges with four equivalent Cl(1)K5 square pyramids, and edges with three equivalent F(2)K3Te tetrahedra. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Te(1) atom. In the second F site, F(2) is bonded to one K(2), two equivalent K(1), and one Te(1) atom to form distorted FK3Te tetrahedra that share corners with two equivalent Cl(1)K5 square pyramids, corners with two equivalent F(2)K3Te tetrahedra, and edges with three equivalent Cl(1)K5 square pyramids. In the third F site, F(3) is bonded in a 4-coordinate geometry to three equivalent K(2) and one Te(1) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one Te(1) atom. In the fifth F site, F(5) is bonded in a single-bond geometry to one K(1) and one Te(1) atom.
K2TeClF5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to three equivalent Cl(1), one F(1), one F(4), one F(5), and two equivalent F(2) atoms. There are a spread of K(1)-Cl(1) bond distances ranging from 3.12-3.26 Å. The K(1)-F(1) bond length is 2.81 Å. The K(1)-F(4) bond length is 2.67 Å. The K(1)-F(5) bond length is 3.11 Å. There is one shorter (2.74 Å) and one longer (2.99 Å) K(1)-F(2) bond length. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Cl(1), one F(1), one F(2), one F(4), and three equivalent F(3) atoms. There is one shorter (3.27 Å) and one longer (3.30 Å) K(2)-Cl(1) bond length. The K(2)-F(1) bond length is 2.89 Å. The K(2)-F(2) bond length is 2.96 Å. The K(2)-F(4) bond length is 2.88 Å. There are a spread of K(2)-F(3) bond distances ranging from 2.79-3.09 Å. Te(1) is bonded in a square pyramidal geometry to one F(1), one F(2), one F(3), one F(4), and one F(5) atom. The Te(1)-F(1) bond length is 2.00 Å. The Te(1)-F(2) bond length is 2.04 Å. The Te(1)-F(3) bond length is 2.04 Å. The Te(1)-F(4) bond length is 2.00 Å. The Te(1)-F(5) bond length is 1.93 Å. Cl(1) is bonded to two equivalent K(2) and three equivalent K(1) atoms to form ClK5 square pyramids that share corners with two equivalent F(2)K3Te tetrahedra, edges with four equivalent Cl(1)K5 square pyramids, and edges with three equivalent F(2)K3Te tetrahedra. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Te(1) atom. In the second F site, F(2) is bonded to one K(2), two equivalent K(1), and one Te(1) atom to form distorted FK3Te tetrahedra that share corners with two equivalent Cl(1)K5 square pyramids, corners with two equivalent F(2)K3Te tetrahedra, and edges with three equivalent Cl(1)K5 square pyramids. In the third F site, F(3) is bonded in a 4-coordinate geometry to three equivalent K(2) and one Te(1) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one Te(1) atom. In the fifth F site, F(5) is bonded in a single-bond geometry to one K(1) and one Te(1) atom.