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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Dynamics of the Reaction O(~3P) + H_2S -> OH + SH. 1. Rotational, #LAMBDA# Doublet, and Fine Structure Distributions in the OH(v' = 1) Product
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Dynamics of the Reaction O(~3P) + H_2S -> OH + SH. 1. Rotational, #LAMBDA# Doublet, and Fine Structure Distributions in the OH(v' = 1) Product

机译：O（〜3P）+ H_2S-> OH + SH反应动力学。 1. OH（v“ = 1）乘积中的旋转，＃LAMBDA＃双峰和精细结构分布

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Rotational, spin-orbit, and #LAMBDA# doublet populations have been measured in the OH (v" = 1) product of the O(~3P) + H_2S reaction. Ground-state O atoms with kinetic energies above the barrier to reaction were formed by photolysis of NO_2 at 355 nm. Rotational populations were found to be hotter than statistically predicted, with excitation up to the energetic limit in a distribution that suggests efficient conversion of reagent kinetic energy into OH product rotation. Spin-orbit ratios show approximately equal populations in the ~2#PI#_(3/2) and ~2#PI#_(1/2) states of OH, but #LAMBDA# doublets favor the symmetric A' level for all measured values of N'. A model of the dynamics involving a planar transition state is invoked to explain the observations and predicts the SH cofragment to be formed in the A" #LAMBDA# doublet with little rotational energy.
机译：在O（〜3P）+ H_2S反应的OH（v“ = 1）乘积中测量了自旋轨道，自旋轨道和＃LAMBDA＃的双峰态。动能高于反应垒的基态O原子为在355 nm处通过NO_2的光解而形成，发现旋转种群比统计上预测的要热，激发达到了能量极限，表明试剂动能有效转化为OH产物旋转，自旋轨道比大致相等处于〜2＃PI #_（3/2）和〜2＃PI #_（1/2）OH状态的分子，但是＃LAMBDA＃双峰对所有N'测量值都支持对称的A'水平。调用涉及平面过渡态的动力学模型来解释这些观察结果，并预测将在A“＃LAMBDA＃双峰中以很少的旋转能量形成SH共碎片。

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