Multiply protonated betaine clusters are stable in the gas phase??

Chemical Communications Pub Date: 2008-08-29 DOI: 10.1039/B808124G

Abstract

Multiply protonated clusters of betaine are formed viaelectrospray ionisation and fragment via competitive betaine neutral loss and charge separation; theoretical calculations suggest the [Mn + 2H]2+ ions consist of a [M2 + 2H]2+ core based on the hydrogen bonded carboxylic acid dimer.

Graphical abstract: Multiply protonated betaine clusters are stable in the gas phase
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