Sm3Al is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sm(1) is bonded to eight equivalent Sm(1) and four equivalent Al(1) atoms to form distorted SmSm8Al4 cuboctahedra that share corners with twelve equivalent Sm(1)Sm8Al4 cuboctahedra, edges with eight equivalent Al(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Sm8Al4 cuboctahedra, faces with four equivalent Al(1)Sm12 cuboctahedra, and faces with fourteen equivalent Sm(1)Sm8Al4 cuboctahedra. Al(1) is bonded to twelve equivalent Sm(1) atoms to form AlSm12 cuboctahedra that share corners with twelve equivalent Al(1)Sm12 cuboctahedra, edges with twenty-four equivalent Sm(1)Sm8Al4 cuboctahedra, faces with six equivalent Al(1)Sm12 cuboctahedra, and faces with twelve equivalent Sm(1)Sm8Al4 cuboctahedra.
Sm3Al is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sm(1) is bonded to eight equivalent Sm(1) and four equivalent Al(1) atoms to form distorted SmSm8Al4 cuboctahedra that share corners with twelve equivalent Sm(1)Sm8Al4 cuboctahedra, edges with eight equivalent Al(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Sm8Al4 cuboctahedra, faces with four equivalent Al(1)Sm12 cuboctahedra, and faces with fourteen equivalent Sm(1)Sm8Al4 cuboctahedra. All Sm(1)-Sm(1) bond lengths are 3.43 Å. All Sm(1)-Al(1) bond lengths are 3.43 Å. Al(1) is bonded to twelve equivalent Sm(1) atoms to form AlSm12 cuboctahedra that share corners with twelve equivalent Al(1)Sm12 cuboctahedra, edges with twenty-four equivalent Sm(1)Sm8Al4 cuboctahedra, faces with six equivalent Al(1)Sm12 cuboctahedra, and faces with twelve equivalent Sm(1)Sm8Al4 cuboctahedra.