1. Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
2. Inorganic Chemistry I Ruhr-University Bochum Universitaetsstrasse 150 44801 Bochum Germany
3. Department of Chemistry Faculty of Science Tanta University Tanta 31527 Egypt
4. Fraunhofer Institute for Environmental, Safety, and Energy Technology Osterfelder Strasse 3 46047 Oberhausen Germany