Cyclic voltammetry (CV), UV-vis spectroscopy, and resonance Raman (RR) spectroscopy are utilized to characterize the pi-anion and pi-cation radicals of ZnOEC (OEC octaethylchlorin). Features in the RR spectra are assigned with the aid of data from the meso-d(4) isotopomer of ZnOEC and ZnEtI (EtI = etiochlorin I). The vibrational frequency shift patterns of the radicals ate consistent with expected bonding changes on placing an electron in the LUMO or a hole in the HOMO. The frontier orbitals are similar in ZnOEC and ZnOEP (OEP octaethylporphyrin), but the anion spectra differ because of the consequences of the Jahn-Teller effect in ZnOEP-. The cation and anion vibrational shifts do not add to give the shifts previously reported for the triplet state, indicating additional distortion upon triplet excitation.