KTe2F9 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 10-coordinate geometry to one F(2), one F(4), one F(5), one F(9), two equivalent F(6), two equivalent F(7), and two equivalent F(8) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a square pyramidal geometry to one F(1), one F(2), one F(6), one F(8), and one F(9) atom. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one F(1), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. There are nine inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the second F site, F(2) is bonded in a distorted water-like geometry to one K(1) and one Te(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to one Te(2) atom. In the fourth F site, F(4) is bonded in a distorted linear geometry to one K(1) and one Te(2) atom. In the fifth F site, F(5) is bonded in a distorted single-bond geometry to one K(1) and one Te(2) atom. In the sixth F site, F(6) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Te(1) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one Te(2) atom. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Te(1) atom. In the ninth F site, F(9) is bonded in a 3-coordinate geometry to one K(1), one Te(1), and one Te(2) atom.
KTe2F9 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 10-coordinate geometry to one F(2), one F(4), one F(5), one F(9), two equivalent F(6), two equivalent F(7), and two equivalent F(8) atoms. The K(1)-F(2) bond length is 2.80 Å. The K(1)-F(4) bond length is 2.67 Å. The K(1)-F(5) bond length is 2.79 Å. The K(1)-F(9) bond length is 2.76 Å. There is one shorter (2.88 Å) and one longer (3.08 Å) K(1)-F(6) bond length. There is one shorter (2.73 Å) and one longer (2.80 Å) K(1)-F(7) bond length. There is one shorter (2.70 Å) and one longer (2.91 Å) K(1)-F(8) bond length. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a square pyramidal geometry to one F(1), one F(2), one F(6), one F(8), and one F(9) atom. The Te(1)-F(1) bond length is 2.02 Å. The Te(1)-F(2) bond length is 1.96 Å. The Te(1)-F(6) bond length is 1.89 Å. The Te(1)-F(8) bond length is 1.96 Å. The Te(1)-F(9) bond length is 2.02 Å. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one F(1), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. The Te(2)-F(1) bond length is 2.48 Å. The Te(2)-F(3) bond length is 1.98 Å. The Te(2)-F(4) bond length is 1.88 Å. The Te(2)-F(5) bond length is 1.88 Å. The Te(2)-F(7) bond length is 1.97 Å. The Te(2)-F(9) bond length is 2.60 Å. There are nine inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the second F site, F(2) is bonded in a distorted water-like geometry to one K(1) and one Te(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to one Te(2) atom. In the fourth F site, F(4) is bonded in a distorted linear geometry to one K(1) and one Te(2) atom. In the fifth F site, F(5) is bonded in a distorted single-bond geometry to one K(1) and one Te(2) atom. In the sixth F site, F(6) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Te(1) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one Te(2) atom. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Te(1) atom. In the ninth F site, F(9) is bonded in a 3-coordinate geometry to one K(1), one Te(1), and one Te(2) atom.