双环戊二烯-氯醌体系的CIDNP研究

波谱学杂志 ›› 1999, Vol. 16 ›› Issue (3): 255-258.

双环戊二烯-氯醌体系的CIDNP研究

王玥菊, 李二成

中国科学院化学研究所分子动态与稳态国家重点实验室, 北京 100080

收稿日期:1998-11-09 修回日期:1999-03-11 出版日期:1999-06-05 发布日期:2018-01-11
作者简介:王玥菊,女,1973年出生,硕士,助研
基金资助:
国家自然科学基金资助项目(29473142)

CIDNP STUDY OF DICYCLOPENTADINE CHLORONIL SYSTEM

Wang Yueju, Li Ercheng

Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080

Received:1998-11-09 Revised:1999-03-11 Online:1999-06-05 Published:2018-01-11

摘要/Abstract

摘要： 利用Nd/YAG激光器的三倍频激光脉冲(355nm),对双环戊二烯的光敏化反应进行了CIDNP方面的研究,结合CIDNP理论模拟谱的计算,证实了Roth等人所推测的此光敏化反应自由基中间体结构为双重的烯丙基物种,通过计算,确定了自由基各质子的超精细偶合常数hfc的相对大小和绝对符号以及各碳原子上的未偶电子自旋密度,从而对这个特殊的自由基中间体结构有了更清晰的认识.

关键词: 双环戊二烯, 光敏化, 自由基反应, CIDNP效应

Abstract: The electron transfer process from dicyclopentadine to chloronil in different solvents (acetone-d₆, methonal-d₄, acetonitrol-d₃) has been studied by CIDNP method, using 355nm laser source. Similar CIDNP effects were observed indicating the same radical intermediate in this photo-reaction process. In comparison of the simulated CIDNP spectra with the experimental results, we obtained the relative values of hfc and the spin density of uncoupled electrons of atom C in this intermediate proposed by Roth.

Key words: Dicyclopentadine, Photo-induced, Radical reaction, CIDNP effect

王玥菊, 李二成. 双环戊二烯-氯醌体系的CIDNP研究[J]. 波谱学杂志, 1999, 16(3): 255-258.

Wang Yueju, Li Ercheng. CIDNP STUDY OF DICYCLOPENTADINE CHLORONIL SYSTEM[J]. Chinese Journal of Magnetic Resonance, 1999, 16(3): 255-258.

[1]	王歆燕1，王婷1，严宝珍1*，张艳2. 1-乙酰基-2, 3-吲哚二酮的光诱导氢转移反应的CIDNP研究[J]. 波谱学杂志, 2002, 19(2): 187-194.
[2]	蒋宏键, 严宝珍, 李二成, 徐广智. 安息香及其衍生物光反应的CIDNP研究[J]. 波谱学杂志, 1991, 8(1): 1-10.