Despite the complex electronic structure of Yb 14 M Sb 11 , many distinguishing features can be explained using molecular orbital theory and Zintl chemistry. The structural makeup of Yb 14 M Sb 11 compounds consists of (Sb 3 ) 7-trimers, (M Sb 4 ) m-tetrahedra, isolated Sb anions, and isolated Yb cations. These components generate bands at different energy ranges due to the energies of the atomic orbitals and bonding/antibonding interactions.