INFRARED SPECTROSCOPY OF SIZE-SELECTED CARBOCATIONS I.: C$_{3}$H$_{3}^{+}$, C$_{3}$H$_{5}^{+}$, AND C$_{4}$H$_{9}^{+}$

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Cold, rare gas tagged, gas phase carbocations are produced in a pulsed electric discharge supersonic expansion cluster source. The infrared spectra of the size-selected species are obtained \emph{via} infrared photodissociation spectroscopy. The structure and spectroscopy (700-4000 cm$^{-1}$) of the propargyl, cyclopropenyl, allyl, 2-propenyl, and t-butyl ions will be discussed. The infrared spectral signatures of the title ions are compared to the interstellar unidentified infrared emission bands.

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Author Institution: Department of Chemistry, University of Georgia, Athens, Georgia 30602.

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