Dependence of the Decomposition Rate of Furoxanes on the Polarity of the Solvent

IF 1.4 4区 化学 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL Russian Journal of Physical Chemistry B Pub Date : 2024-05-29 DOI:10.1134/S1990793124020283
G. M. Nazin, A. I. Kazakov, A. V. Nabatova, L. L. Fershtat, A. A. Larin
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Abstract

The decomposition rates of diphenylfuroxane and a number of 4-nitro-3-alkyl-furoxanes in dilute solutions are measured by the manometric and calorimetric methods. An increase in the reaction rate with an increase in the polarity of the solvent is not detected in any instance, which corresponds to the absence of an increase in the dipole moment of the molecule during the formation of a transition state (TS). Based on this result, a conclusion is made about the biradical (BR) mechanism of the decomposition of uncondensed disubstituted furoxanes (FOs) in solutions.

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呋喃类化合物的分解率与溶剂极性的关系
摘要 采用压力计和量热法测量了二苯基呋喃和一些 4-硝基-3-烷基呋喃在稀溶液中的分解率。在任何情况下都没有检测到反应速率随溶剂极性的增加而增加,这说明在过渡态(TS)形成过程中分子的偶极矩没有增加。根据这一结果,得出了未缩合二取代呋喃烷(FOs)在溶液中分解的双辐射(BR)机制的结论。
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来源期刊
Russian Journal of Physical Chemistry B
Russian Journal of Physical Chemistry B 化学-物理:原子、分子和化学物理
CiteScore
2.20
自引率
71.40%
发文量
106
审稿时长
4-8 weeks
期刊介绍: Russian Journal of Physical Chemistry B: Focus on Physics is a journal that publishes studies in the following areas: elementary physical and chemical processes; structure of chemical compounds, reactivity, effect of external field and environment on chemical transformations; molecular dynamics and molecular organization; dynamics and kinetics of photoand radiation-induced processes; mechanism of chemical reactions in gas and condensed phases and at interfaces; chain and thermal processes of ignition, combustion and detonation in gases, two-phase and condensed systems; shock waves; new physical methods of examining chemical reactions; and biological processes in chemical physics.
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