Vibronic spectroscopy of dichlorobenzyl radicals: Jet-cooled 3,4-dichlorobenzyl radical

作者：Yoon Young Wook; Lee Sang Kuk^*

来源：Chemical Physics Letters, 2013, 570: 29-32.

DOI：10.1016/j.cplett.2013.03.056

By means of a technique of corona excited supersonic expansion coupled with a pinhole-type glass nozzle, vibronically excited but jet-cooled 3,4-dichlorobenzyl radical was formed from precursor 3,4-dichlorotoluene in corona discharge. From an analysis of the visible vibronic emission spectrum observed, we determined the electronic energy of the D-1 -%26gt; D-0 transition and vibrational mode frequencies in the D-0 state of the 3,4-dichlorobenzyl radical by comparing with the known vibrational data of precursor and an ab initio calculation. Also, the substituent effect on the electronic transition energy was explained using Huckel%26apos;s molecular orbital theory for the first time.

• 出版日期2013-5-10