10061
J . Am. Chem. SOC.1992,114, 10061-10062 close-lying electronic states, originating either from Jahn-Teller distortion or by solvent-induced lifting of the 3-fold orbital degeneracy of the mononegative anion. In this model, T~ exp(AEIkT) denotes the average time of the radical in its ground state, AE denoting the energy difference of the electronic singlet 1 + u27,Z) to the remaining doublet. The resulting J(w) leads to T2-I = TI-' exp(AE/kT) in the limit w&:
