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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >High Resolution Electronic Spectroscopy of o- and m-Toluidine in the Gas Phase.Barrier Height Determinations for the Methyl Group Torsional Motions
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High Resolution Electronic Spectroscopy of o- and m-Toluidine in the Gas Phase.Barrier Height Determinations for the Methyl Group Torsional Motions

机译：气相中邻甲苯胺和间甲苯胺的高分辨率电子光谱。甲基扭转运动的壁垒高度测定

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摘要

High resolution electronic spectra of o- and m-toluidine have each been recorded for the S1rS0 origin band transitions of the isolated molecules. Each spectrum is split into two sub-bands owing to tunneling motions along the methyl group torsional coordinate. Analyses of these data provide information about the preferred configurations of the methyl groups and the barriers opposing their motions in both the ground and excited electronic states. Despite their apparent similarities, the experiments reveal that these properties are quite different in the two molecules. Possible reasons for this behavior are discussed.
机译：分别记录了邻甲苯胺和间甲苯胺的高分辨率电子光谱用于分离分子的S1rS0起源带跃迁。由于沿着甲基扭转坐标的隧穿运动，每个光谱被分成两个子带。这些数据的分析提供了有关甲基的优选构型以及在基态和受激电子态下阻碍其运动的势垒的信息。尽管它们具有明显的相似性，但实验表明，这两个分子的这些特性完全不同。讨论了此行为的可能原因。

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