1. Department of Chemistry
and Pharmacy, University of Erlangen-Nürnberg, 91058 Erlangen, Germany
2. Institute of Inorganic Chemistry,
Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
3. Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
4. Computer Chemistry
Center, University of Erlangen-Nürnberg, 91052 Erlangen, Germany