高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (1): 47.

• 论文 • 上一篇    下一篇

脂族酰基过氧化物分解动力学的研究(Ⅷ)--过氧化辛酰、过氧化己酰热分解产物的CIDNP效应

刘有成, 郭庆祥, 刘佩琪   

  1. 兰州大学化学系
  • 收稿日期:1985-11-10 出版日期:1987-01-24 发布日期:1987-01-24
  • 基金资助:

    国家教育委员会科学基金资助课题

Studies on the Kinetics of Decomposition of Diacyl Peroxides (Ⅷ) --CIDNP Effect of the Products of Thermolysis of Octanoyl Peroxide and Hexanoyl Peroxide

Liu Youcheng, Guo Qingxiang, Liu Peiqi   

  1. Department of Chemistry, Lanzhou University, Lanzhou
  • Received:1985-11-10 Online:1987-01-24 Published:1987-01-24

摘要: 测定了过氧化辛酰(1)和过氧化己酰(2)在邻二氯苯中,分别在碘、碘乙烷、2-碘丙烷和3-溴丙烯存在下,90℃时热分解产物的1HNMR谱,观察到自由基捕获产物(RX,R=n-C7H15、n-C5H11;X=I,Br)和歧化产物(R-H)的CIDNP多重效应。讨论了过氧化酰热分解生成自由基对及相互作用的机理。

Abstract: 1H ClDNP spectra recorded during the decomposition of aliphatic diacyl peroxides [(RCOO)2, R = n-C7H15(1), n-C5H11(2)] in ODCB in the presence of scavengers, such as I2, C2H5I,(CH3)2CHI, and CH2=CHCH3Br, show multiplet effect polarization for RX (X= Br, I) and disproportionate products, R-H. The reaction mechanism is discussed in terms of radical pair theory.

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