1. Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
2. Institute of Inorganic Chemistry Leibniz University Hannover Callinstr. 9 D-30167 Hannover Germany
3. Institute of Analytical Chemistry Technical University Freiberg Leipziger Straße 29 09599 Freiberg Germany
4. Institute of Organic Chemistry Leibniz University Hannover Schneiderberg 1b D-30167 Hannover Germany