Probing electrostatic effects: Formation and characterization of zwitterionic ions and their "neutral" counterparts in the gas phase

被引：17
|
作者：
Broadus, KM [1 ]
Kass, SR [1 ]
机构：
[1] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2000年 / 122卷 / 37期
关键词：
D O I：
10.1021/ja0016708
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A dipolar ion and its nonzwitterionic counterpart were generated and characterized in the gas phase. A single charge site is found to be sufficient to lower the energy of a zwitterion well below its neutral counterpart. Charge separation in a dipolar anion enables hydrogen-deuterium exchange to take place with acids over an extraordinarily large range. These results provide a basis for studying electrostatic effects and understanding mass spectroscopic processes involving large biological molecules.
引用
收藏
页码：9014 / 9018
页数：5
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