1. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland, Fax: +48‐12‐6340515,
2. Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, Fax: +49‐9131‐8527387,
3. Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30‐387 Kraków, Poland, Fax: +48‐12‐6646902