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

K. M. Broadus, S. R. Kass

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

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 spectroscopic processes involving large biological molecules.

Original languageEnglish (US)
Pages (from-to)9014-9018
Number of pages5
JournalJournal of the American Chemical Society
Volume122
Issue number37
DOIs
StatePublished - Sep 20 2000

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