Femtosecond transition-state dynamics

Creators: Zewail, Ahmed H.

Abstract

This article presents the progress made in probing femtosecond transition–state dynamics of elementary reactions. Experiments demonstrating the dynamics in systems characterized by a transition region and by a saddle-point transition state are reported, and comparison with theory is made.

Additional Information

© Royal Society of Chemistry 1991 Paper 1/00399B; Received 29th January, 1991 This research was supported by the Air Force Office of Scientific Research and by the National Science Foundation. It is with pleasure that I thank members of my group for all their help and discussions during the writing of the manuscript. I would particularly like to thank Gareth Roberts for his help and thorough reading of the manuscript. I also thank Peijun Cong, Martin Gruebele, Bob Bowman and Jim Gerdy for all their efforts. In discussing the current work on bimolecular reactions with Prof. John Polanyi during a recent visit to Caltech, he suggested the extension of the studies to include inelastic scattering of the products; we hope to be able to study both the reactive and inelastic collisions. Finally, I thank Professor John Simons for his patience and kindness; E-mail did help in getting the manuscript over the barrier (transition-state) to overseas! Dedication: Richard B. Bernstein, a dear friend and colleague, was scheduled to give the Spiers Memorial Lecture of this Discussion. Dick was planning to talk about the dynamics of bimolecular reactions in real time, mentioned in the text, for work completed during two sabbatical leaves at Caltech. This article is dedicated to the memory of Dick; his friendship, excitement about femtochemistry, and the joy he brought in discussing science will never be forgotten.

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