Affiliation: | 1. Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg (Germany);2. Institute of Inorganic Chemistry, University of G?ttingen, Tammannstr. 4, 37077 G?ttingen (Germany), Fax: (+49)?551‐39‐3063;3. Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269‐3060 (USA) |