This is the peer reviewed version of the following article: Angew. Chem. Int. Ed., 2009,48, 5748-5751, which has been published in final form at:
Version of Record online: 30 June 2009
urn:nbn:de:hbz:464-20201030-111143-6 Zitier-Link kopieren
URN (urn:nbn:de:hbz:464-20201030-111143-6)
https://nbn-resolving.org/urn:nbn:de:hbz:464-20201030-111143-6
DOI (10.1002/anie.200902202)
https://doi.org/10.1002/anie.200902202