1. Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
2. Institute of Chemistry of Polymeric Materials Montanuniversitaet Leoben Otto-Gloeckelstrasse 2 8700 Leoben Austria
3. Institute of Physical and Theoretical Chemistry Technical University Graz Stremayrgasse 9/II 8010 Graz Austria