K3SbF6 crystallizes in the cubic Fm-3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to twelve equivalent F(1) atoms to form distorted KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, faces with four equivalent K(2)F6 octahedra, and faces with four equivalent Sb(1)F6 octahedra. In the second K site, K(2) is bonded to six equivalent F(1) atoms to form KF6 octahedra that share corners with six equivalent Sb(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Sb(1) is bonded to six equivalent F(1) atoms to form SbF6 octahedra that share corners with six equivalent K(2)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a linear geometry to one K(2), four equivalent K(1), and one Sb(1) atom.
K3SbF6 crystallizes in the cubic Fm-3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to twelve equivalent F(1) atoms to form distorted KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, faces with four equivalent K(2)F6 octahedra, and faces with four equivalent Sb(1)F6 octahedra. All K(1)-F(1) bond lengths are 3.35 Å. In the second K site, K(2) is bonded to six equivalent F(1) atoms to form KF6 octahedra that share corners with six equivalent Sb(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All K(2)-F(1) bond lengths are 2.53 Å. Sb(1) is bonded to six equivalent F(1) atoms to form SbF6 octahedra that share corners with six equivalent K(2)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Sb(1)-F(1) bond lengths are 2.20 Å. F(1) is bonded in a linear geometry to one K(2), four equivalent K(1), and one Sb(1) atom.