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Author Ruiz-Santoyo, José Arturo ♦ Álvarez-Valtierra, Leonardo ♦ Wilke, Josefin ♦ Wilke, Martin ♦ Schmitt, Michael ♦ Yi, John T. ♦ Pratt, David W.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ ABSORPTION SPECTRA ♦ DIAGRAMS ♦ DIPOLE MOMENTS ♦ EXCITATION ♦ FLUORESCENCE ♦ FLUORESCENCE SPECTROSCOPY ♦ METHYL RADICALS ♦ MOLECULAR BEAMS ♦ MOLECULES ♦ NITRILES ♦ POTENTIAL ENERGY
Abstract Rotationally resolved fluorescence excitation spectra of the origin bands in the S{sub 1}←S{sub 0} transition of 2-tolunitrile (2TN) and 3-tolunitrile (3TN) have been recorded in the collision-free environment of a molecular beam. Analyses of these data provide the rotational constants of each molecule and the potential energy curves governing the internal rotation of the attached methyl groups in both electronic states. 2TN exhibits much larger barriers along this coordinate than 3TN. Interestingly, the electronic transition dipole moment in both molecules is markedly influenced by the position of the attached methyl group rather than the position of the cyano group; possible reasons for this intriguing behavior are discussed.
ISSN 00219606
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-01-28
Publisher Place United States
Journal Journal of Chemical Physics
Volume Number 144
Issue Number 4


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