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Title:WATER-NETWORK MEDIATED, ELECTRON INDUCED PROTON TRANSFER IN ANIONIC [C5H5N·(H2O)n]− CLUSTERS: SIZE DEPENDENT FORMATION OF THE PYRIDINIUM RADICAL FOR n ≥ 3
Author(s):DeBlase, Andrew F
Contributor(s):Johnson, Mark; Jordan, Kenneth D.; Archer, Kaye A; Weddle, Gary H
Subject(s):Clusters/Complexes
Abstract:As an isolated species, the radical anion of pyridine (Py$^{-}$) exists as an unstable transient negative ion, while in aqueous environments it is known to undergo rapid protonation to form the neutral pyridinium radical [PyH$^{(0)}$] along with hydroxide. Furthermore, the negative adiabatic electron affinity (AEA) of Py$^{-}$ can become diminished by the solvation energy associated with cluster formation. In this work, we focus on the hydrates [Py$cdot$(H$_{2}$O)$_{n}$]$^{-}$ with n = 3-5 and elucidate the structures of these water clusters using a combination of vibrational predissociation and photoelectron spectroscopies. We show that H-trasfer to form PyH$^{(0)}$ occurs in these clusters by the infrared signature of the nascent hydroxide ion and by the sharp bending vibrations of aromatic ring CH bending.
Issue Date:24-Jun-15
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:ACS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/79257
Date Available in IDEALS:2016-01-05


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