Rb2CrTlF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Cr(1)F6 octahedra, and faces with four equivalent Tl(1)F6 octahedra. Cr(1) is bonded to six equivalent F(1) atoms to form CrF6 octahedra that share corners with six equivalent Tl(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Tl(1) is bonded to six equivalent F(1) atoms to form TlF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1), one Cr(1), and one Tl(1) atom.
Rb2CrTlF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Cr(1)F6 octahedra, and faces with four equivalent Tl(1)F6 octahedra. All Rb(1)-F(1) bond lengths are 3.26 Å. Cr(1) is bonded to six equivalent F(1) atoms to form CrF6 octahedra that share corners with six equivalent Tl(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Cr(1)-F(1) bond lengths are 1.94 Å. Tl(1) is bonded to six equivalent F(1) atoms to form TlF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Tl(1)-F(1) bond lengths are 2.65 Å. F(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1), one Cr(1), and one Tl(1) atom.