1. Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium, Fax: +32‐3‐820‐2310
2. Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
3. Institute for Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
4. Institute of Organic Chemistry, Russian Academy of Sciences, 630090 Novosibirsk, Russia, Fax: +7‐383‐330‐9752