1. Department
of Chemistry, Institute
of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37 077 Göttingen,
Germany
2. Department of Chemistry,
Institute
of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37 077 Göttingen, Germany
3. Department of Chemistry, University of Paderborn, Warburger Strasse 100, 33
098 Paderborn, Germany