WATER-NETWORK MEDIATED, ELECTRON INDUCED PROTON TRANSFER IN ANIONIC [C5H5N·(H2O)n]− CLUSTERS: SIZE DEPENDENT FORMATION OF THE PYRIDINIUM RADICAL FOR n ≥ 3

DeBlase, Andrew F.

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https://hdl.handle.net/2142/79257 Copy

Description

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

Issue Date

24-Jun-15

Keyword(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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

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http://hdl.handle.net/2142/79257

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