1. Department
of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
2. Mulliken
Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, University of Bonn, Beringstr. 4, D-53115 Bonn, Germany
3. Skaggs
School of Pharmacy and Pharmaceutical Sciences, University of California at San Diego, 9500 Gilman Drive, MC 0736, La Jolla, California 92093-0736, United States
4. Department
of Chemistry, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia, Canada B2G
2W5