Rb2CrF6 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent F(1) and eight equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with four equivalent Cr(1)F6 octahedra. Cr(1) is bonded to two equivalent F(1) and four equivalent F(2) atoms to form CrF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one Cr(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to four equivalent Rb(1) and one Cr(1) atom.
Rb2CrF6 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent F(1) and eight equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with four equivalent Cr(1)F6 octahedra. All Rb(1)-F(1) bond lengths are 2.96 Å. All Rb(1)-F(2) bond lengths are 3.03 Å. Cr(1) is bonded to two equivalent F(1) and four equivalent F(2) atoms to form CrF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. Both Cr(1)-F(1) bond lengths are 1.87 Å. All Cr(1)-F(2) bond lengths are 1.81 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one Cr(1) atom. In the second F site, F(2) is bonded in a single-bond geometry to four equivalent Rb(1) and one Cr(1) atom.