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Volume 112, Issue 17, 01 May 2000
Identification of and -centered cluster isomers from fragment-dependent vibrational predissociation spectra of112(2000); http://dx.doi.org/10.1063/1.481369View Description Hide Description
Cluster isomers of have been identified by vibrational predissociationspectroscopy in combination with mass-selected detection of photofragments. Ab initio calculations indicate that the cluster ion can exist in either or isomeric forms. They can dissociate via a methanol loss or water loss channel, depending on the structure of the isomers. While water loss is the dominant channel of the dissociation, the methanol loss channel is readily accessible by the -centered cluster isomer. We demonstrate in this study that mass-selected detection of photofragments produced by vibrational excitation is an effective way of identifying cluster isomers in the gas phase.