Abstract
Collision-induced dissociation (CID) of protonated ammonia-alcohol and water-alcohol heteroclusters was studied using a triple quadrupole mass spectrometer with a corona discharge atmospheric pressure ionization source. CID results suggested that the ammonia-alcohol clusters had NH: at the core of the cluster and that hydrogen-bonded alcohol molecules solvated this central ion. In contrast, CID results in water-alcohol clusters showed that water loss was strongly favored over alcohol loss and that there was a preference for the charge to reside on an alcohol molecule. The results also indicated that a loose chain of hydrogen-bonded molecules was formed in the water-alcohol clusters and that there appeared to be no rigid protonation site or a fixed central ion. (J Am Soc Mass
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Karpas, Z., Eiceman, G.A., Harden, C.S. et al. On the structure of water—alcohol and ammonia—alcohol protonated clusters. J Am Soc Mass Spectrom 4, 507–512 (1993). https://doi.org/10.1016/1044-0305(93)80009-N
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DOI: https://doi.org/10.1016/1044-0305(93)80009-N