Be13Nd crystallizes in the cubic Fm-3c space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to one Be(2), nine equivalent Be(1), and two equivalent Nd(1) atoms to form distorted BeNd2Be10 cuboctahedra that share  a cornercorner with one Be(2)Be12 cuboctahedra, corners with twenty-seven equivalent Be(1)Nd2Be10 cuboctahedra, edges with eight equivalent Be(1)Nd2Be10 cuboctahedra, faces with two equivalent Be(2)Be12 cuboctahedra, and faces with twenty-three equivalent Be(1)Nd2Be10 cuboctahedra. In the second Be site, Be(2) is bonded to twelve equivalent Be(1) atoms to form a mixture of face and corner-sharing BeBe12 cuboctahedra. Nd(1) is bonded in a 24-coordinate geometry to twenty-four equivalent Be(1) atoms.
Be13Nd crystallizes in the cubic Fm-3c space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to one Be(2), nine equivalent Be(1), and two equivalent Nd(1) atoms to form distorted BeNd2Be10 cuboctahedra that share  a cornercorner with one Be(2)Be12 cuboctahedra, corners with twenty-seven equivalent Be(1)Nd2Be10 cuboctahedra, edges with eight equivalent Be(1)Nd2Be10 cuboctahedra, faces with two equivalent Be(2)Be12 cuboctahedra, and faces with twenty-three equivalent Be(1)Nd2Be10 cuboctahedra. The Be(1)-Be(2) bond length is 2.15 Å. There are a spread of Be(1)-Be(1) bond distances ranging from 2.25-2.33 Å. Both Be(1)-Nd(1) bond lengths are 3.04 Å. In the second Be site, Be(2) is bonded to twelve equivalent Be(1) atoms to form a mixture of face and corner-sharing BeBe12 cuboctahedra. Nd(1) is bonded in a 24-coordinate geometry to twenty-four equivalent Be(1) atoms.