Research paperVisible emission spectroscopy of jet-cooled chloro-substituted 2-methylbenzyl radicals

Add time:08/11/2019    Source:sciencedirect.com

Four isomeric chloro-substituted 2-methylbenzyl radicals were generated from the corona discharge of 3- and 4-chloro-o-xylenes seeded in a large amount of He carrier gas using a technique of corona excited supersonic expansion coupled with a pinhole-type glass nozzle. The observed visible vibronic emission spectra were analyzed to identify the radical species produced in the discharge, from which the production of the 3-, 4-, 5-, and 6-chloro-2- methylbenzyl radicals was confirmed. In addition, we determined the D1 → D0 electronic transition energies and vibrational mode frequencies in the D0 state of the isomeric chloro-substituted 2-methylbenzyl radicals.

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