Er3Nd is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Er(1) is bonded to eight equivalent Er(1) and four equivalent Nd(1) atoms to form ErNd4Er8 cuboctahedra that share corners with twelve equivalent Er(1)Nd4Er8 cuboctahedra, edges with eight equivalent Nd(1)Er12 cuboctahedra, edges with sixteen equivalent Er(1)Nd4Er8 cuboctahedra, faces with four equivalent Nd(1)Er12 cuboctahedra, and faces with fourteen equivalent Er(1)Nd4Er8 cuboctahedra. Nd(1) is bonded to twelve equivalent Er(1) atoms to form NdEr12 cuboctahedra that share corners with twelve equivalent Nd(1)Er12 cuboctahedra, edges with twenty-four equivalent Er(1)Nd4Er8 cuboctahedra, faces with six equivalent Nd(1)Er12 cuboctahedra, and faces with twelve equivalent Er(1)Nd4Er8 cuboctahedra.
Er3Nd is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Er(1) is bonded to eight equivalent Er(1) and four equivalent Nd(1) atoms to form ErNd4Er8 cuboctahedra that share corners with twelve equivalent Er(1)Nd4Er8 cuboctahedra, edges with eight equivalent Nd(1)Er12 cuboctahedra, edges with sixteen equivalent Er(1)Nd4Er8 cuboctahedra, faces with four equivalent Nd(1)Er12 cuboctahedra, and faces with fourteen equivalent Er(1)Nd4Er8 cuboctahedra. All Er(1)-Er(1) bond lengths are 3.56 Å. All Er(1)-Nd(1) bond lengths are 3.56 Å. Nd(1) is bonded to twelve equivalent Er(1) atoms to form NdEr12 cuboctahedra that share corners with twelve equivalent Nd(1)Er12 cuboctahedra, edges with twenty-four equivalent Er(1)Nd4Er8 cuboctahedra, faces with six equivalent Nd(1)Er12 cuboctahedra, and faces with twelve equivalent Er(1)Nd4Er8 cuboctahedra.