Rb2PrCuI6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Pr(1)I6 octahedra, and faces with four equivalent Cu(1)I6 octahedra. Pr(1) is bonded to six equivalent I(1) atoms to form PrI6 octahedra that share corners with six equivalent Cu(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. Cu(1) is bonded to six equivalent I(1) atoms to form CuI6 octahedra that share corners with six equivalent Pr(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded in a distorted linear geometry to four equivalent Rb(1), one Pr(1), and one Cu(1) atom.
Rb2PrCuI6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Pr(1)I6 octahedra, and faces with four equivalent Cu(1)I6 octahedra. All Rb(1)-I(1) bond lengths are 4.25 Å. Pr(1) is bonded to six equivalent I(1) atoms to form PrI6 octahedra that share corners with six equivalent Cu(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Pr(1)-I(1) bond lengths are 3.13 Å. Cu(1) is bonded to six equivalent I(1) atoms to form CuI6 octahedra that share corners with six equivalent Pr(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Cu(1)-I(1) bond lengths are 2.88 Å. I(1) is bonded in a distorted linear geometry to four equivalent Rb(1), one Pr(1), and one Cu(1) atom.