OBSERVATION OF NH(X3-SIGMA-, A 1-DELTA) FROM THE H+NCO REACTION

被引：12

作者：

QUINONES, E

CHEN, J

DAGDIGIAN, PJ

机构：

[1] Department of Chemistry, The Johns Hopkins University, Baltimore

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 174卷 / 01期

关键词：

D O I：

10.1016/0009-2614(90)85327-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The H + NCO→NH + CO reaction has been investigated in a molecular experiment in a beam-gas scattering arrangement by laser fluorescence detection of the NH product in its X 3Σ- and a 1Δ electronic states. These states are formed almost exclusively in their ground v = 0 vibrational levels. The electronic state branching ratio of a 1Δ to X 3Σ- is determined to equal 0.0023 ± 0.0009:1. The total reaction cross section for H + NCO versus that for H + N3 was estimated to be 1.2 ± 0.3:1. The low formation rate for the NH (a 1Δ) product reflects the slight endothermicity of the NH (a 1Δ) + CO reaction pathway. The implication of these experimental results for the dynamics of the H + NCO reaction, in particular the mechanism of formation of the NH (X 3Σ-) product, as well as a comparison with the H + N3 reaction, are discussed. © 1990.

引用

页码：65 / 70

页数：6

共 37 条

[1] ENERGETICS AND SPIN-DOUBLET AND LAMBDA-DOUBLET SELECTIVITY IN THE INFRARED MULTIPHOTON DISSOCIATION HN3(X1A')-]N2(X1-SIGMA-G+)+NH(X3-SIGMA-,A1-DELTA) - THEORY [J].