Rb2NiF6 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, and faces with four equivalent Ni(1)F6 octahedra. Ni(1) is bonded to six equivalent F(1) atoms to form NiF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. F(1) is bonded in a single-bond geometry to four equivalent Rb(1) and one Ni(1) atom.
Rb2NiF6 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, and faces with four equivalent Ni(1)F6 octahedra. All Rb(1)-F(1) bond lengths are 2.97 Å. Ni(1) is bonded to six equivalent F(1) atoms to form NiF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. All Ni(1)-F(1) bond lengths are 1.79 Å. F(1) is bonded in a single-bond geometry to four equivalent Rb(1) and one Ni(1) atom.