Anion A- • HX clusters with reduced electron binding energies: Proton vs hydrogen atom relocation upon electron detachment

Xue Bin Wang, Steven R. Kass

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13 Scopus citations

Abstract

Clustering an anion with one or more neutral molecules is a stabilizing process that enhances the oxidation potential of the complex relative to the free ion. Several hydrogen bond clusters (i.e., A- • HX, where A- = H2PO4- and CF3CO2- and HX = MeOH, PhOH, and Me2NOH or Et2NOH) are examined by photoelectron spectroscopy and M06-2X and CCSD(T) computations. Remarkably, these species are experimentally found to have adiabatic detachment energies that are smaller than those for the free ion and reductions of 0.47 to 1.87 eV are predicted computationally. Hydrogen atom and proton transfers upon vertical photodetachment are two limiting extremes on the neutral surface in a continuum of mechanistic pathways that account for these results, and the whole gamut of possibilities are predicted to occur.

Original languageEnglish (US)
Pages (from-to)17332-17336
Number of pages5
JournalJournal of the American Chemical Society
Volume136
Issue number49
DOIs
StatePublished - Dec 10 2014

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.

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