1. Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland, Department of Bioorganic Chemistry, Center for Molecular and Macromolecular Studies, Polish Academy of Sciences, PL-90363 Lódź, Poland, and Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Technical University of Lódź, PL-90924 Lódź, Poland