Infrared Spectroscopy of Size-Selected Protonated Molecular Clusters: (N_{2})_{2}H^{+}, (CO)_{2}H^{+}, and (O_{2})_{2}H^{+}

Details Infrared Spectroscopy of Size-Selected Protonated Molecular Clusters: (N_{2})_{2}H^{+}, (CO)_{2}H^{+}, and (O_{2})_{2}H^{+} Infrared Spectroscopy of Size-Selected Protonated Molecular Clusters: (N_{2})_{2}H^{+}, (CO)_{2}H^{+}, and (O_{2})_{2}H^{+}

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confemg09r&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Computer Science

Infrared/Raman

Scientific paper

Cold, rare gas tagged, gas phase protonated molecular dimers are produced in a pulsed electric discharge supersonic expansion cluster source. In such systems the proton is shared between the two molecules. The intermolecular proton transfer potential in these systems is generally very flat due to the identical proton affinities of the bound molecules. This leads to a very low frequency and very intense intermolecular proton stretch that is poorly modeled by the harmonic approximation. This intense mode also causes large amounts of coupling between vibrational modes and thus a complicated spectrum for such simple systems. The infrared spectra of the size-selected species are obtained via infrared photodissociation spectroscopy. The structure and spectroscopy (700-4000 cm^{-1}) of the dimers of protonated nitrogen, carbon monoxide and oxygen will be discussed as well as attempts to model the spectrum using sophisticated ab initio methods.

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