1. Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
2. Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
4. Department of Chemistry, Florida State University, Tallahassee, Florida 32306, United States
5. School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, U.K.
6. Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
7. Theoretical Chemistry, TU Darmstadt, Alarich-Weiss-Strasse 4, 64287 Darmstadt, Germany