1. Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
2. Department of Chemistry, University of Rochester, Rochester, NY 14627‐0216, USA
3. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824‐1322, USA