1. Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, CHE205, Tampa, Florida 33620-5250, United States
2. Department of Chemistry, Durham University, South Road Durham, Durham DH1 3LE, United Kingdom
3. Department of Chemistry, The University of Texas at Austin, 100 East 24th Street, Norman Hackerman Building, Austin, Texas 78712, United States
4. Department of Chemistry, Eckerd College, 4200 54th Avenue South, St. Petersburg, Florida 33711, United States