Eric Block,* Ali A. Bazzi Department of Chemistry University of Missouri-St. Louis St. Louis, Missouri 63121 ... Joseph B. Lambert, Steven M. Wharry Department of Chemistry Northwestern University Evanston, Illinois 60201 ... Kenneth K. Andersen Department of Chemistry University of New Hampshire Durham, New Hampshire 03824 ... Donald C. Dittmer, Bhalchandra H. Patwardhan Department of Chemistry Syracuse University Syracuse, New York 13210