K2NaCeF6 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 Na(1)F6 octahedra, and faces with four equivalent Ce(1)F6 octahedra. Na(1) is bonded to six equivalent F(1) atoms to form NaF6 octahedra that share corners with six equivalent Ce(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Ce(1) is bonded to six equivalent F(1) atoms to form CeF6 octahedra that share corners with six equivalent Na(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 linear geometry to four equivalent K(1), one Na(1), and one Ce(1) atom.
K2NaCeF6 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 Na(1)F6 octahedra, and faces with four equivalent Ce(1)F6 octahedra. All K(1)-F(1) bond lengths are 3.22 Å. Na(1) is bonded to six equivalent F(1) atoms to form NaF6 octahedra that share corners with six equivalent Ce(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Na(1)-F(1) bond lengths are 2.28 Å. Ce(1) is bonded to six equivalent F(1) atoms to form CeF6 octahedra that share corners with six equivalent Na(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ce(1)-F(1) bond lengths are 2.28 Å. F(1) is bonded in a linear geometry to four equivalent K(1), one Na(1), and one Ce(1) atom.