1. Department
of Chemistry, The Ohio State University, Columbus, Ohio 43210-1185, United States
2. Department
of Electrical and Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, Ohio 45221-0030, United States
3. Institut fuer Anorganische
Chemie und Analytische Chemie, Johannes Gutenberg-Universitaet Mainz, D 55099 Mainz, Germany
4. Department
of Chemistry, Millikin University, Decatur, Illinois 62522, United States