甲基苯酚异构体双电荷离子［C_7H_8O］^（2＋）和［C_7H_7O］~（2＋  

A Study of Ion Kinetic Energy Spectrometry of ortho-, meta-, para-Methyl Phenol Doubly Charged Ions in Gas Phase

作　　者：李智立[1] 刘淑莹[1] 任达[1] 黄承义[1] 张法义[1] 

机构地区：[1]中国科学院长春应用化学研究所,南开大学测试计算中心

出　　处：《Chinese Journal of Chemical Physics》1994年第5期412-417,共6页化学物理学报（英文）

基　　金：国家自然科学基金

摘　　要：本文利用质量分析离子动能谱（ＭＩＫＥＳ）和电子捕获诱导解离（ＥＣＩＤ）技术，研究了邻、间、对甲基苯酚分子在电子轰击质谱（ＥＩＭＳ）中产生的双电荷离子［Ｃ_７Ｈ_８Ｏ］^（２＋）和［Ｃ_７Ｈ_７Ｏ］^（２＋），根据测定电荷分离反应的动能释放值Ｔ和由此计算出的两电荷间距Ｒ，推测出过渡态的结构，双电荷离子的ＥＣＩＤ谱对三种异构体的区分提供了一定的信息。Abstract The unimolecular charge separation reactions of the doubly charged ions [C,H,O]'.[C,H,OI]2++produced in the ion source by electron impact form o-, m-- and P-- methyl phenols have been studied using mass--analyzed ion kinetic energy Spectrometry (MIKES) technique.The valuse or kinetic energy releases (n can be calculated from the energy dispersion of product ions and (T) essentially reflects the Coulombic energy, which is released immediately before the decomposition of the ions. From these data some structural inforamtion about the transition states can be obtained.

关 键 词：甲基苯酚 离子 异构体 离子动能谱 

分 类 号：O625.312[理学—有机化学]