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On the structure of water—alcohol and ammonia—alcohol protonated clusters

✍ Scribed by Z. Karpas; G.A. Eiceman; C.S. Harden; R.G. Ewing

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
606 KB
Volume
4
Category
Article
ISSN
1044-0305

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✦ Synopsis

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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