Affiliation: | 1. Laboratorium für Organische Chemie, ETH Zurich, H?nggerberg, HCI, CH‐8093 Zurich (Switzerland), Fax: (+41)?44‐632‐1109;2. Department of Chemistry, Columbia University, New York, NY 10027 (USA);3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2‐1‐1 Katahira, Aoba, Sendai 980‐8577 (Japan) |