Affiliation: | 1. Institut für Anorganische Chemie, Universit?t Regensburg, 93040 Regensburg (Germany), Fax: (+49)?941‐943‐4439;2. Institute of Physics, Academy of Science of the Czech Republic, 16253 Praha 6 (Czeck Republic);3. Institut für Chemie, Humboldt‐Universit?t zu Berlin, 10099 Berlin (Germany) |