^aChemistry Department, State University of New York College of Environmental Science and Forestry, Forestry Drive, Syracuse, NY 13210, USA

^bKatholieke Universiteit Leuven, Department of Chemistry, Laboratory of Macromolecular & Physical Organic Chemistry, Celestijnenlaan 200F, Louvain, B-3001 Belgium

^cLoker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, University Park, Los Angeles, CA 90089-1661, USA