1. Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
2. Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 503833 Wrocław, Poland
3. Department of Chemistry, University of Helsinki, P.O. Box 55, A. I. Virtasen aukio 1, FIN-00014 Helsinki, Finland