1. Department of Chemistry, The Ohio State University, Columbus, Ohio 43210 (M.D.P., D.H.K., T.K.); AFWAL Avionics Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433 (W.B.T., G.B.N.); and Brehm Laboratory and Department of Chemistry, Wright State University, Dayton, Ohio 45435 (T.O.T.)