1. Biological and Chemical Research Centre, Department of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, 02-089 Warszawa, Poland
2. Institut fur Anorganische Chemie, Georg-August-Universitat, Tammannstrasse 4, 37077 Göttingen, Germany
3. Anorganische Chemie und Strukturchemie, Heinrich-Heine Universitat Düsseldorf, Universitatsstrasse 1, Gëbaude 26.42.01.21, 40225 Düsseldorf, Germany