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dc.creatorRaston, Paul L.en_US
dc.creatorLiang, Taoen_US
dc.creatorObi, Emmanuel I.en_US
dc.creatorDouberly, Gary E.en_US
dc.date.accessioned2013-07-16T21:45:47Z
dc.date.available2013-07-16T21:45:47Z
dc.date.issued2013en_US
dc.identifier2013-WJ-13en_US
dc.identifier.urihttp://hdl.handle.net/1811/55546
dc.descriptionAuthor Institution: Department of Chemistry, University of Georgia, Athens, Georgia 30602, USAen_US
dc.description.abstractThe vinyl radical has been trapped in $^{4}$He nanodroplets and probed with infrared laser spectroscopy in the CH stretch region between 2850 and 3200 cm$^{-1}$. The assigned band origins for the CH${_2}$ symmetric ($\nu$${_3}$), CH${_2}$ antisymmetric ($\nu$${_2}$), and lone $\alpha$-CH stretch ($\nu$${_1}$) vibrations are in good agreement with previously reported full-dimensional vibrational configuration interaction calculations., 174301 2009} For all three bands, $\textit{a}$-type and $\textit{b}$-type transitions are observed from the lowest symmetry allowed roconvibrational state of each nuclear spin isomer, which allows for a determination of the tunneling splittings in both the ground and excited vibrational levels. Comparisons to gas phase millimeter-wave rotation-tunneling, 3604 2004} and high-resolution jet-cooled infrared spectra, 044305 (2008)} reveal that the effect of the $^{4}$He solvent is to reduce the ground and $\nu$${_3}$ excited state tunneling splittings by $\approx$20\%. This solvent-induced modification of the tunneling dynamics can be reasonably accounted for by assuming either an $\approx$2.5\% increase in the effective barrier height along the tunneling coordinate or an $\approx$5\% increase in the effective reduced mass of the tunneling particles.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleINRARED SPECTROSCOPY AND TUNNELING DYNAMICS OF THE VINYL RADICAL IN $^{4}$He NANODROPLETSen_US
dc.typeArticleen_US


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