双环戊二烯-氯醌体系的CIDNP研究  

CIDNP STUDY OF DICYCLOPENTADINE CHLORONIL SYSTEM

作　　者：李二成[1] 

机构地区：[1]中国科学院化学研究所分子动态与稳态国家重点实验室

出　　处：《波谱学杂志》1999年第3期255-258,共4页Chinese Journal of Magnetic Resonance

基　　金：国家自然科学基金

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。The electron transfer process from dicyclopentadine to chloronil in different solvents (acetone d 6, methonal d 4, acetonitrol d 3) 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.

关 键 词：双环戊二烯 光敏化 自由基 氯酯 激光 CIDNP效应 

分 类 号：O624.12[理学—有机化学] O644.18[理学—化学]