| 双环戊二烯-氯醌体系的CIDNP研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 李二成 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金;29473142; |
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| 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.
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| 关 键 词： | 双环戊二烯 光敏化 自由基反应 CIDNP效应 |
| 收稿时间： | 1998-11-09 |
CIDNP STUDY OF DICYCLOPENTADINE-CHLORONIL SYSTEM |
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| Wang Yueju,Li Ercheng.CIDNP STUDY OF DICYCLOPENTADINE-CHLORONIL SYSTEM[J].Chinese Journal of Magnetic Resonance,1999,16(3):255-258. |
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| Authors: | Wang Yueju Li Ercheng |
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| Institution: | Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080 |
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| 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. |
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| Keywords: | Dicyclopentadine Photo-induced Radical reaction CIDNP effect |
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