Rb2NaFeF6 is (Cubic) Perovskite-derived structured and 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 Na(1)F6 octahedra, and faces with four equivalent Fe(1)F6 octahedra. Na(1) is bonded to six equivalent F(1) atoms to form NaF6 octahedra that share corners with six equivalent Fe(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Fe(1) is bonded to six equivalent F(1) atoms to form FeF6 octahedra that share corners with six equivalent Na(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 linear geometry to four equivalent Rb(1), one Na(1), and one Fe(1) atom.
Rb2NaFeF6 is (Cubic) Perovskite-derived structured and 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 Na(1)F6 octahedra, and faces with four equivalent Fe(1)F6 octahedra. All Rb(1)-F(1) bond lengths are 3.05 Å. Na(1) is bonded to six equivalent F(1) atoms to form NaF6 octahedra that share corners with six equivalent Fe(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Na(1)-F(1) bond lengths are 2.34 Å. Fe(1) is bonded to six equivalent F(1) atoms to form FeF6 octahedra that share corners with six equivalent Na(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Fe(1)-F(1) bond lengths are 1.97 Å. F(1) is bonded in a distorted linear geometry to four equivalent Rb(1), one Na(1), and one Fe(1) atom.