Photodissociation and photoisomerization of α-fluorotoluene and 4-fluorotoluene in a molecular beam
作者： Cheng-Liang Huang , Jyh-Chiang Jiang , Yuri A. Dyakov , Ming-Fu Lin , Chien-Ming Tseng
DOI: 10.1063/1.2219445
关键词:
摘要: The photodissociation of jet-cooled α-fluorotoluene and 4-fluorotoluene at 193 248nm was studied using vacuum ultraviolet (vuv) photoionization/multimass ion imaging techniques as well electron impact ionization/photofragment translational spectroscopy. Four dissociation channels were observed for both 248nm, including two major C6H5CH2F→C6H5CH2 (orC7H7)+F C6H5CH2F→C6H5CH (orC7H6)+HF minor C6H5CH2F→C6H5CHF+H C6H5CH2F→C6H5+CH2F. vuv wavelength dependence the C7H7 fragment photoionization spectra indicates that least part F atom elimination channel results from isomerization to a seven-membered ring prior dissociation. Dissociation 193nm include C6H4FCH3→C6H4FCH2+H C6H4FCH3→C6H4F+CH3 C6H4FCH3→C6H5CH2 C6H4FCH3→C6H5CH (orC7H6)+HF. rates are 3.3×107 5.6×...
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