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dc.creatorChaiken, J.en_US
dc.creatorGurnick, M.en_US
dc.creatorBenson, Thomasen_US
dc.creatorMcDonald, J. D.en_US
dc.date.accessioned2006-06-15T14:35:37Z
dc.date.available2006-06-15T14:35:37Z
dc.date.issued1980en_US
dc.identifier1980-TF-11en_US
dc.identifier.urihttp://hdl.handle.net/1811/11396
dc.descriptionAuthor Institution:en_US
dc.description.abstractLaser induced fluorescence excitation spectra of the series glyoxal, methylglyoxal, biacetyl and 2,3-pentanedione in a pulsed supersonic nozzle beam at as high as 1.8 GHz resolution show that except for glyoxal these molecules undergo a characteristic structural deformation during the transition. Our incomplete assignment of the methylglyoxal spectrum suggests that the methyl internal rotation and carbonyl skeletal motions are involved. The positions of the O-O bands shift to the blue as a methyl group is added to glyoxal and methylglyoxal, but not as the side groups are extended as in 2,3-pentanedione. We cannot precisely identify the interaction between the carbonyls and methyl groups that cause these effects. As the size of the carbon skeleton increases the number of observed low frequency vibrational excitations increases and the energy at which the spectra break off decreases. These observations are consistent with the known radiationless behavior of these molecules.en_US
dc.format.extent108661 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleVIBRATIONAL AND ROTATIONAL SPECTROSCOPY OF THE FIRST ELECTRONICALLY ALLOWED TRANSITION OF $\alpha$-DICARBONYLSen_US
dc.typearticleen_US


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