K2SbF5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to eight equivalent F(1) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one F(2) and eight equivalent F(1) atoms. Sb(1) is bonded in a distorted square pyramidal geometry to one F(2) and four equivalent F(1) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Sb(1) atom. In the second F site, F(2) is bonded in a 2-coordinate geometry to one K(2) and one Sb(1) atom.
K2SbF5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to eight equivalent F(1) atoms. There are four shorter (2.82 Å) and four longer (2.88 Å) K(1)-F(1) bond lengths. In the second K site, K(2) is bonded in a 5-coordinate geometry to one F(2) and eight equivalent F(1) atoms. The K(2)-F(2) bond length is 2.67 Å. There are four shorter (2.59 Å) and four longer (3.19 Å) K(2)-F(1) bond lengths. Sb(1) is bonded in a distorted square pyramidal geometry to one F(2) and four equivalent F(1) atoms. The Sb(1)-F(2) bond length is 1.96 Å. All Sb(1)-F(1) bond lengths are 2.08 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Sb(1) atom. In the second F site, F(2) is bonded in a 2-coordinate geometry to one K(2) and one Sb(1) atom.