K3MnF6 is (Cubic) Perovskite-like structured and 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 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 Mn(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 Mn(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Mn(1) is bonded to six equivalent F(1) atoms to form MnF6 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 distorted linear geometry to one K(2), four equivalent K(1), and one Mn(1) atom.
K3MnF6 is (Cubic) Perovskite-like structured and 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 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 Mn(1)F6 octahedra. All K(1)-F(1) bond lengths are 3.16 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 Mn(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 2.50 Å. Mn(1) is bonded to six equivalent F(1) atoms to form MnF6 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 Mn(1)-F(1) bond lengths are 1.95 Å. F(1) is bonded in a distorted linear geometry to one K(2), four equivalent K(1), and one Mn(1) atom.