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http://dx.doi.org/10.5012/bkcs.2011.32.9.3389

Isomeric Trimethylbenzyl Radicals Produced by Corona Discharge of 1,2,3,5-Tetramethylbenzene  

Lee, Gi-Woo (Department of Chemistry, Korea University)
Yoon, Young-Wook (Department of Chemistry and The Chemistry Institute for Functional Materials, Pusan National University)
Lee, Sang-Kuk (Department of Chemistry and The Chemistry Institute for Functional Materials, Pusan National University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.9, 2011 , pp. 3389-3394 More about this Journal
Abstract
Isomeric trimethylbenzyl radicals were generated and vibronically excited from precursor 1,2,3,5-tetramethylbenzene, isodurene, with a large amount inert carrier gas helium in a corona excited supersonic expansion (CESE) using a pinhole-type glass nozzle. A long-path monochromator was used to record the visible vibronic emission spectra of the jet-cooled benzyl-type radicals in the $D_1{\rightarrow}D_0$ electronic transition. From the analysis of the spectra, we identified the evidence of the presence of three isomeric trimethylbenzyl radicals in the corona discharge, and obtained the electronic energy and a few vibrational mode frequencies in the ground electronic state for each isomer.
Keywords
Trimethylbenzyl radicals; Spectroscopy; Vibronic spectrum;
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