Affiliation: | 1. Department of Chemistry, University of Houston, Houston, TX 77204‐5003 (USA);2. Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720‐1460 (USA), Fax: (+1)?510‐643‐5208;3. Université Paris‐Sud, ICMMO (UMR CNRS 8182), 91405 Orsay (France);4. Department of Chemistry, University of Lagos, Akoka, Yaba, Lagos (Nigeria) |