State-selected reaction and relaxation of NH22B1(0,ν2,0)) radicals and NO2

Article abstract of DOI:10.1063/1.449399

The reaction of ground and vibrationally excited NH2(ν₂ =0, 1) with NO2 has been studied using the sensitive laser-induced fluorescence (LIF) technique.The state-selected NH2 radical was generated via infrared multiple-photon dissociation (IRMPD) of N2H4, NH3, and CH3NH2.The rate constants obtained at room temperature are k_NO2(ν₂ =0) = (2.26 +/- 0.08)X10^-11 cm³ molecule^-1 s^-1 and k_NO2(ν₂ =1) = (1.73 +/- 0.06)X10^-11 cm³ molecule^-1 s^-1.The most prominent feature of the results is the decrease of the reaction rate with vibrational bending mode excitation.A possible reaction mechanism is proposed to account for this observation as well as for previously reported literature values.The vibrational relaxation of NH2(ν₂ =1) with CH3NH2 and NH3 have also been studied.The room temperature rate constants are k_CH3NH2 = (7.4 +/- 0.5)X10^-11 cm³ molecule^-1 s^-1 and k_NH3 = (4.7 +/- 0.6)X 10^-11 cm³ molecule s^-1, respectively.A near-resonant vibrational relaxation model is proposed to fit the experimental results.

Full text of DOI:10.1063/1.449399

Stateselected reaction and relaxation of NH2[X 2 B 1(0,ν2,0)] radicals and NO2
TianXiang Xiang, Lourdes M. Torres, and William A. Guillory
Citation: The Journal of Chemical Physics 83, 1623 (1985); doi: 10.1063/1.449399
View online: http://dx.doi.org/10.1063/1.449399
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/83/4?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.59.226.54 On: Tue, 09 Dec 2014 22:14:44