Selective product channels in the reactions of NH(a 1Δ) and NH(X 3Σ-) with NO

Article abstract of DOI:10.1063/1.461676

Reactions of imidogen, NH, in the electronically excited a ¹Δ and ground X ³Σ^- states with NO have been studied at 300 +/- 2 K and at 20 Torr (Ar).NH(a ¹Δ) and NH(X ³Σ^-) were produced in the 193 nm photolysis of HNCO and CHBr3/NO, respectively, and detected by the laser-induced fluorescence (LIF) technique.Rate constants have been measured under pseudo-first-order conditions by scanning the time delay between the photolysis and probe laser pulses.Overall rate constants were determined: <4.8 +/- 0.1(2?)> * 10^-11 cm³ molecule^-1 s^-1 for NH(a ¹Δ) + NO; <4.7 +/- 0.6(2?)> * 10^-11 cm³ molecule^-1 s^-1 for NH(X ³Σ^-) + NO.The ratio of electronic quenching, NH(a ¹Δ) + NO -> NH(X ³Σ^-) + NO, to the overall reaction has been obtained to be 0.53 +/- 0.1.An interesting specificity for the products from different spin states of the reactants has been found from observation of OH concentration profiles.NH(X ³Σ^-) + NO produces OH + N2 exclusively, while NH(a ¹Δ) + NO is over five times less effective in producing OH + N2.Profiles of H atoms detected by the vuv LIF technique indicated that H atoms are directly produced in the reaction NH(a ¹Δ) + NO but not in the reaction NH(X ³Σ^-) + NO.

Full text of DOI:10.1063/1.461676

Selective product channels in the reactions of NH(a 1Δ) and NH(X 3Σ−) with NO
Katsuyoshi Yamasaki, Satoru Okada, Mitsuo Koshi, and Hiroyuki Matsui
Citation: The Journal of Chemical Physics 95, 5087 (1991); doi: 10.1063/1.461676
View online: http://dx.doi.org/10.1063/1.461676
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/95/7?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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18

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:
136.165.238.131 On: Tue, 23 Dec 2014 06:39:18