Reaction dynamics of CN + O2 --> NCO + O(3P2)

The Journal of Chemical Physics
Mark F WitinskiH Floyd Davis

Abstract

We have used oxygen Rydberg time-of-flight spectroscopy to carry out a crossed molecular beam study of the CN + O2 reaction at collision energies of 3.1 and 4.1 kcal/mol. The O(3P2) products were tagged by excitation to high-n Rydberg levels and subsequently field ionized at a detector. The translational energy distributions were broad, indicating that the NCO is formed with a wide range of internal excitation, and the angular distribution was forward-backward symmetric, indicating the participation of NCOO intermediates with lifetimes comparable to or longer than their rotational periods. Rice-Ramsperger-Kassel-Marcus modeling of the dissociation of NCOO to NCO + O suggests that Do(NC-OO) > or = 38 kcal/mol, which is consistent with several theoretical calculations. Implications for the competing CO + NO channel are discussed.

References

Nov 20, 2004·The Journal of Chemical Physics·H M LambertP L Houston

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Citations

Jul 5, 2013·The Review of Scientific Instruments·Daniel R AlbertH Floyd Davis
Feb 16, 2008·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Xibin GuAlexander M Mebel
Jun 30, 2010·Physical Chemistry Chemical Physics : PCCP·Michel Costes, Christian Naulin
Sep 9, 2018·The Journal of Chemical Physics·Michael N R AshfoldXueming Yang
Mar 24, 2009·The Journal of Physical Chemistry. a·Wenhui Feng, John F Hershberger
Dec 5, 2008·Accounts of Chemical Research·Xibin Gu, Ralf I Kaiser
May 11, 2012·The Journal of Physical Chemistry. a·Wenhui Feng, John F Hershberger

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