title: Spectroscopic identification of benzyl-type radicals generated by corona discharge of 2-chloro-4-fluorotoluene.
abstract: By means of a technique of corona excited supersonic expansion coupled with a pinhole-type glass nozzle, we generated vibronically excited but jet-cooled benzyl-type radicals from precursor 2-chloro-4-fluorotoluene seeded in a large amount of inert carrier gas He. From an analysis of the visible vibronic emission spectrum, we found evidence of the formation of the 2-chloro-4-fluorobenzyl and 4-fluorobenzyl radicals. A possible pathway for the formation of these benzyl-type radicals is herein proposed. Also, the electronic energy in the D(1) → D(0) transition and the vibrational mode frequencies of the 2-chloro-4-fluorobenzyl radical in the ground electronic state were accurately determined, for the first time, by comparison with ab initio calculations and the known vibrational data of the precursor.
authors.affiliation: Department of Chemistry and The Chemistry Institute for Functional Materials, Pusan National University, Pusan 609-735, South Korea.
authors.forename: Chang Soon
authors.initials: CS
authors.lastname: Huh
authors.forename: Young Wook
authors.initials: YW
authors.lastname: Yoon
authors.forename: Sang Kuk
authors.initials: SK
authors.lastname: Lee