A Laser Flash Photolysis Study of Azo-Compound Formation from Aryl Nitrenes at Room Temperature

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• 作者：Alec Q. Ribblett ; James S. Poole
• 刊名：Journal of Physical Chemistry A
• 出版年：2016
• 出版时间：June 30, 2016
• 年：2016
• 卷：120
• 期：25
• 页码：4267-4276
• 全文大小：584K
• 年卷期：0
• ISSN：1520-5215

文摘

The species 4-nitrenopyridine 1-oxide is known to exhibit triplet nitrene dominated chemistry to yield azo-dimer products exclusively, even at room temperature. As such, this species, and its analogue 4-nitrenoquinoline 1-oxide, are useful models to probe the mechanism of formation of azo-dimers, which is postulated to proceed by self-reaction of the nitrene or reaction of nitrene with the parent azide. A laser flash photolysis study is described where the kinetics of formation of azo-dimer were found to be most adequately modeled by competition between both mechanisms, and rate coefficients for the competing reactions were determined.