The Properties of Ion-water Clusters. I. The Protonated 21-water Cluster

TitleThe Properties of Ion-water Clusters. I. The Protonated 21-water Cluster
Publication TypeJournal Article
Year of Publication2005
AuthorsIyengar, SS, Petersen, MK, Day, TJ, Burnham, CJ, Teige, VE, Voth, GA
JournalJ Chem Phys
Volume123
Pagination084309
KeywordsAdsorption Algorithms Binding Sites Chemistry, Physical/methods Fourier Analysis Hydrogen/chemistry *Ions Models, Theoretical Molecular Conformation Protons Software Thermodynamics Time Factors Water/*chemistry
Abstract

The ab initio atom-centered density-matrix propagation approach and the multistate empirical valence bond method have been employed to study the structure, dynamics, and rovibrational spectrum of a hydrated proton in the "magic" 21 water cluster. In addition to the conclusion that the hydrated proton tends to reside on the surface of the cluster, with the lone pair on the protonated oxygen pointing "outwards," it is also found that dynamical effects play an important role in determining the vibrational properties of such clusters. This result is used to analyze and complement recent experimental and theoretical studies.

DOI10.1063/1.2007628