Rb2KAsCl6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent Cl(1) atoms to form RbCl12 cuboctahedra that share corners with twelve equivalent Rb(1)Cl12 cuboctahedra, faces with six equivalent Rb(1)Cl12 cuboctahedra, faces with four equivalent K(1)Cl6 octahedra, and faces with four equivalent As(1)Cl6 octahedra. K(1) is bonded to six equivalent Cl(1) atoms to form KCl6 octahedra that share corners with six equivalent As(1)Cl6 octahedra and faces with eight equivalent Rb(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. As(1) is bonded to six equivalent Cl(1) atoms to form AsCl6 octahedra that share corners with six equivalent K(1)Cl6 octahedra and faces with eight equivalent Rb(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. Cl(1) is bonded in a linear geometry to four equivalent Rb(1), one K(1), and one As(1) atom.
Rb2KAsCl6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent Cl(1) atoms to form RbCl12 cuboctahedra that share corners with twelve equivalent Rb(1)Cl12 cuboctahedra, faces with six equivalent Rb(1)Cl12 cuboctahedra, faces with four equivalent K(1)Cl6 octahedra, and faces with four equivalent As(1)Cl6 octahedra. All Rb(1)-Cl(1) bond lengths are 3.89 Å. K(1) is bonded to six equivalent Cl(1) atoms to form KCl6 octahedra that share corners with six equivalent As(1)Cl6 octahedra and faces with eight equivalent Rb(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. All K(1)-Cl(1) bond lengths are 2.99 Å. As(1) is bonded to six equivalent Cl(1) atoms to form AsCl6 octahedra that share corners with six equivalent K(1)Cl6 octahedra and faces with eight equivalent Rb(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. All As(1)-Cl(1) bond lengths are 2.51 Å. Cl(1) is bonded in a linear geometry to four equivalent Rb(1), one K(1), and one As(1) atom.