Journal of the American Chemical Society

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

KM Broadus, SR Kass

Index: Broadus, Katherine M.; Kass, Steven R. Journal of the American Chemical Society, 2000 , vol. 122, # 37 p. 9014 - 9018

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Citation Number: 22

Abstract

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 ...