Ultrafast Study of Bromine Radical in Solution: the Role of Complexes and Vibrational Excitation

Details Ultrafast Study of Bromine Radical in Solution: the Role of Complexes and Vibrational Excitation Ultrafast Study of Bromine Radical in Solution: the Role of Complexes and Vibrational Excitation

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confewf04c&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

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Dynamics

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The bromine radical is an interesting species to interrogate with vibrationally mediated chemistry. It forms a long-lived complex in the liquid phase, and hydrogen abstraction from a solvent molecule is endothermic. Photolysis of a bromine precursor forms an iso-compound within 1 ps, which decays to a radical-solvent complex on a ˜10 ps timescale. We use these features to examine the reaction of the Br radical complex with an excited C-H oscillator. A potential reaction pathway that becomes available upon vibrational excitation is H abstraction from the excited oscillator by Br. Vibrational excitation can also cause dissociation of the Br complex. We follow the progress of these reactions using transient broadband UV-Vis spectroscopy.

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