化学学报 ›› 1998, Vol. 56 ›› Issue (5): 495-499. 上一篇    下一篇

研究论文

气相中甲苯离子-分子反应产物的串联质谱研究

李智立;刘淑莹   

  1. 中国科学院长春应用化学研究所
  • 发布日期:1998-05-15

Study on dimeric ion of toluene in the gas phase by tandem mass spectrometry

LI ZHILI;LIU SHUYIN   

  • Published:1998-05-15

应用碰撞诱导解离技术, 研究了甲苯自身化学电离条件下离子-分子反应产物离子m/z 182和184的碰撞诱导解离(CID)反应特性。m/z183和184离子碎裂反应具有多种过渡态结构, 如二苯基甲烷衍生物结构、卓翁离子与甲苯形成的共价键结构、甲苯自由基离子与甲苯分子形成的π-配合物结构和苄基离子与甲苯形成的π-配合物结构。

关键词: 甲苯, 诱导, 电离, 离子分子反应, 解离

The reaction character of m/z 183 and 184 ions generated from ion-molecule reaction of toluene under self-chemical ionization was studied using Collision-Induced Dissociation (CID). The results show that the m/z 183 and 184 ions have several transition state structures, such as diphenyl methane derivative, α-bond structure formed between toluene and tropylium, π-complex formed between toluene radical ion and toluene and π-complex consisted of benzyl ion and toluene.

Key words: METHYLBENZENE, INDUCTION, IONIZATION, ION-MOLECULE REACTION, DISSOCIATION

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