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首页> 外文期刊>The Journal of Chemical Physics >Conformational preferences of Criegee intermediates: Isopropyl substituted carbonyl oxide
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Conformational preferences of Criegee intermediates: Isopropyl substituted carbonyl oxide

机译：Criegee中间体的构象偏好：异丙基取代的羰基氧化物

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摘要

Three conformers of the isopropyl-substituted Criegee intermediate, (CH3)(2) CHCHOO, have been observed by Fourier transform microwave spectroscopy. The transient species was produced using a pulsed electric discharge of a gas mixture of 1,1-diiodo-2-methylpropane/O-2 diluted in Ar or Ne. The use of different carrier gases in the supersonic expansion reveals the difference of the collisional relaxation process between anti-conformers. The conformational relaxation pathways have been investigated theoretically and are presented as well. In light of these results, the previous study on the ethyl-substituted Criegee intermediate, where the absence of one of the four possible conformers was associated with collisional relaxation processes, has been re-examined. Here we report the detection of a new conformer of the ethyl-substituted Criegee intermediate observed using Ne as the seeding gas. Published by AIP Publishing.
机译：通过傅里叶变换微波光谱观察到异丙基取代的Criegee中间体，（2）CHCHOO的三个相符。 使用在AR或NE中稀释的1,1-二碘-2-甲基丙烷/ O-2的气体混合物的脉冲放电产生瞬态物质。 在超音速膨胀中使用不同的载气揭示了抗塑壳之间的碰撞弛豫过程的差异。 理论上已经研究了构象弛豫途径，也是如此呈现。 鉴于这些结果，已经重新检查了对乙基取代的Criegee中间体的先前研究，其中四种可能的诱变剂中的四种可能的诱变剂中的一种与碰撞弛豫过程有关。 在这里，我们报告使用NE作为播种气体观察到的乙基取代的颅中中间体的新甲基的检测。 通过AIP发布发布。

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