First-Generation Products of Trans-2-Hexenal Ozonolyis: A New Look at the Mechanism.

IF 2.7 2区 化学 Q3 CHEMISTRY, PHYSICAL
Najoua Derbel, Alexander Alijah, Struan H Robertson, Thomas Lauvaux, Lilian Joly
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引用次数: 0

Abstract

The ozonolysis reaction of trans-2-hexenal was studied theoretically on the basis of highly accurate CCSD(T)-F12b/AVTZ energy values obtained in M06-2X/AVTZ preoptimized nuclear configurations. The kinetics was modeled with the help of the master equation solver MESMER. Apart from the expected stable oxidation products 1-butanal (17%) and glyoxal (35%), a secondary ozonide is formed on the glyoxal channel, which is the principal first-generation product (49%). It is further shown that glyoxal is created on two competing pathways, one of which leads to simultaneous production of the ester propylformate (18%). The inclusion of all of these mechanisms explains the experimental findings and identifies for the first time the origin of the experimental carbon deficit.

根据在 M06-2X/AVTZ 预优化核配置中获得的高精度 CCSD(T)-F12b/AVTZ 能量值,对反式-2-己烯醛的臭氧分解反应进行了理论研究。动力学模型是在主方程求解器 MESMER 的帮助下建立的。除了预期的稳定氧化产物 1-丁醛(17%)和乙二醛(35%)外,乙二醛通道上还形成了二级臭氧,这是主要的第一代产物(49%)。研究进一步表明,乙二醛是通过两条相互竞争的途径产生的,其中一条途径会同时产生丙基甲酸酯(18%)。所有这些机制都解释了实验结果,并首次确定了实验性碳赤字的来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
The Journal of Physical Chemistry A
The Journal of Physical Chemistry A 化学-物理:原子、分子和化学物理
CiteScore
5.20
自引率
10.30%
发文量
922
审稿时长
1.3 months
期刊介绍: The Journal of Physical Chemistry A is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
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