Affiliation: | 1. Institute of Chemistry, Organic Chemistry, Martin‐Luther‐University Halle‐Wittenberg, Kurt‐Mothes‐Strasse 2, 06120 Halle (Germany), Fax: (+49)?345‐55‐27346;2. Department of Engineering Materials, University of Sheffield, Robert Hadfield Building Mappin Street, Sheffield S1 3JD (UK), Fax: (+44)?114‐222‐5943;3. Institute of Chemistry, Physical Chemistry, Martin‐Luther‐University Halle‐Wittenberg, Mühlpforte 1, 06108 Halle (Germany) |