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Proceedings Paper

Site-specific bimolecular chemistry: the reactivity of Cl atoms and butanes
Author(s): Kenneth A. Cowen; Yu-Fong Yen; K. Thomas Lorenz; Brent D. Koplitz
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Paper Abstract

The reaction of chlorine atoms with selectively-deuterated butanes to form HCl and/or DCl under single-collision conditions has been studied. Photolysis of Cl2 with 351 or 308 nm light produces Cl atoms that subsequently abstract an H or D atom to form the corresponding hydrogen chloride product. HCl and DCl are detected via 2 plus 1 multiphoton ionization. For both n-butane and isobutane when viewed on a per hydrogen atom basis, the 'middle' site is preferred. When viewed on a per carbon site basis, this propensity is still observed in n- butane, but isobutane shows no dominant site specificity. Mechanistically, the data can be interpreted qualitatively in several ways, but currently the most convincing argument suggests that a direct, impulsive encounter is involved.

Paper Details

Date Published: 18 September 1995
PDF: 5 pages
Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); doi: 10.1117/12.220838
Show Author Affiliations
Kenneth A. Cowen, Tulane Univ. (United States)
Yu-Fong Yen, Tulane Univ. (United States)
K. Thomas Lorenz, Tulane Univ. (United States)
Brent D. Koplitz, Tulane Univ. (United States)

Published in SPIE Proceedings Vol. 2548:
Laser Techniques for State-Selected and State-to-State Chemistry III
John W. Hepburn, Editor(s)

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