Rb3Dy is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Dy(1) atoms to form distorted RbRb8Dy4 cuboctahedra that share corners with twelve equivalent Rb(1)Rb8Dy4 cuboctahedra, edges with eight equivalent Dy(1)Rb12 cuboctahedra, edges with sixteen equivalent Rb(1)Rb8Dy4 cuboctahedra, faces with four equivalent Dy(1)Rb12 cuboctahedra, and faces with fourteen equivalent Rb(1)Rb8Dy4 cuboctahedra. Dy(1) is bonded to twelve equivalent Rb(1) atoms to form DyRb12 cuboctahedra that share corners with twelve equivalent Dy(1)Rb12 cuboctahedra, edges with twenty-four equivalent Rb(1)Rb8Dy4 cuboctahedra, faces with six equivalent Dy(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Dy4 cuboctahedra.
Rb3Dy is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Dy(1) atoms to form distorted RbRb8Dy4 cuboctahedra that share corners with twelve equivalent Rb(1)Rb8Dy4 cuboctahedra, edges with eight equivalent Dy(1)Rb12 cuboctahedra, edges with sixteen equivalent Rb(1)Rb8Dy4 cuboctahedra, faces with four equivalent Dy(1)Rb12 cuboctahedra, and faces with fourteen equivalent Rb(1)Rb8Dy4 cuboctahedra. All Rb(1)-Rb(1) bond lengths are 4.52 Å. All Rb(1)-Dy(1) bond lengths are 4.52 Å. Dy(1) is bonded to twelve equivalent Rb(1) atoms to form DyRb12 cuboctahedra that share corners with twelve equivalent Dy(1)Rb12 cuboctahedra, edges with twenty-four equivalent Rb(1)Rb8Dy4 cuboctahedra, faces with six equivalent Dy(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Dy4 cuboctahedra.