Infrared photodissociation spectroscopy of Mg +(H 2O)Ar n complexes: Isomers in progressive microsolvation

N. R. Walker, R. S. Walters, M. K. Tsai, K. D. Jordan, M. A. Duncan

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46 Citations (Scopus)

Abstract

Ion-molecule complexes of the form Mg(H 2O)Ar n + (n = 1-8) are produced by laser vaporization in a pulsed-nozzle cluster source. These complexes are mass-selected and studied with infrared photodissociation spectroscopy in the O-H stretch region. The spectra are interpreted with the aid of ab initio calculations on the n = 1-5 complexes, including examination of various isomeric structures. The combined spectroscopic and theoretical studies reveal the presence of multiple isomeric structures at each cluster size, as the argon atoms assemble around the Mg +(H 2O) unit. Distinct infrared resonances are measured for argon-on-metal, argon-on-OH and argon-on-two-OH isomers.

Original languageEnglish
Pages (from-to)7057-7067
Number of pages11
JournalJournal of Physical Chemistry A
Volume109
Issue number32
DOIs
Publication statusPublished - 2005 Aug 18
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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