K2MnHgF6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. 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 Mn(1)F6 octahedra, and faces with four equivalent Hg(1)F6 octahedra. Mn(1) is bonded to six equivalent F(1) atoms to form MnF6 octahedra that share corners with six equivalent Hg(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Hg(1) is bonded to six equivalent F(1) atoms to form HgF6 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. F(1) is bonded in a distorted linear geometry to four equivalent K(1), one Mn(1), and one Hg(1) atom.
K2MnHgF6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. 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 Mn(1)F6 octahedra, and faces with four equivalent Hg(1)F6 octahedra. All K(1)-F(1) bond lengths are 3.13 Å. Mn(1) is bonded to six equivalent F(1) atoms to form MnF6 octahedra that share corners with six equivalent Hg(1)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 2.06 Å. Hg(1) is bonded to six equivalent F(1) atoms to form HgF6 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 Hg(1)-F(1) bond lengths are 2.35 Å. F(1) is bonded in a distorted linear geometry to four equivalent K(1), one Mn(1), and one Hg(1) atom.