1. Department of Chemistry, College of Science, University of Basrah, Basrah, Iraq. Present address: Am Tannenhof 8, 78464 Konstanz, Germany
2. Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
3. Department of Chemistry, College of Science, University of Al-Mustansiryah, Baghdad, Iraq
4. Leibniz-Institut für Katalyse an der Universität Rostock e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
5. Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium