1. Department
of Chemistry, Frostburg State University, 101 Braddock Road, Frostburg,
Maryland 21532, United States
2. Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
3. School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive,
Atlanta, Georgia 30332-0400, United States