More Electron Donors 5 e:Cyclo-pentadienyl (Cp) -can be a 1,3,or 5 e donor resonance resonance ·6 e-donor:benzene -can be a 2,4,or 6e donor resonance XIV-13• 5 e- : Cyclo-pentadienyl (Cp) —can be a 1, 3, or 5 e- donor • 6 e- donor: benzene —can be a 2, 4, or 6 e- donor More Electron Donors resonance resonance resonance XIV-13