Sm3Nd 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 Nd(1) atoms to form SmNd4Sm8 cuboctahedra that share corners with twelve equivalent Sm(1)Nd4Sm8 cuboctahedra, edges with eight equivalent Nd(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Nd4Sm8 cuboctahedra, faces with four equivalent Nd(1)Sm12 cuboctahedra, and faces with fourteen equivalent Sm(1)Nd4Sm8 cuboctahedra. Nd(1) is bonded to twelve equivalent Sm(1) atoms to form NdSm12 cuboctahedra that share corners with twelve equivalent Nd(1)Sm12 cuboctahedra, edges with twenty-four equivalent Sm(1)Nd4Sm8 cuboctahedra, faces with six equivalent Nd(1)Sm12 cuboctahedra, and faces with twelve equivalent Sm(1)Nd4Sm8 cuboctahedra.
Sm3Nd 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 Nd(1) atoms to form SmNd4Sm8 cuboctahedra that share corners with twelve equivalent Sm(1)Nd4Sm8 cuboctahedra, edges with eight equivalent Nd(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Nd4Sm8 cuboctahedra, faces with four equivalent Nd(1)Sm12 cuboctahedra, and faces with fourteen equivalent Sm(1)Nd4Sm8 cuboctahedra. All Sm(1)-Sm(1) bond lengths are 3.64 Å. All Sm(1)-Nd(1) bond lengths are 3.64 Å. Nd(1) is bonded to twelve equivalent Sm(1) atoms to form NdSm12 cuboctahedra that share corners with twelve equivalent Nd(1)Sm12 cuboctahedra, edges with twenty-four equivalent Sm(1)Nd4Sm8 cuboctahedra, faces with six equivalent Nd(1)Sm12 cuboctahedra, and faces with twelve equivalent Sm(1)Nd4Sm8 cuboctahedra.