Photoisomerization and photodissociation of aniline and 4-methylpyridine

Journal of the American Chemical Society
Chien-Ming TsengChi-Kung Ni

Abstract

Photoisomerization and photodissociation of aniline and 4-methylpyridine at 193 nm were studied separately using multimass ion imaging techniques. Photofragment translational energy distributions and dissociation rates were measured. Our results demonstrate that more than 23% of the ground electronic state aniline and 10% of 4-methylpyridine produced from the excitation by 193 nm photons after internal conversion isomerize to seven-membered ring isomers, followed by the H atom migration in the seven-membered ring, and then rearomatize to both methylpyridine and aniline prior to dissociation. The significance of this isomerization is that the carbon, nitrogen, and hydrogen atoms belonging to the alkyl or amino groups are involved in the exchange with those atoms in the aromatic ring during the isomerization.

Citations

Jun 10, 2010·The Journal of Chemical Physics·Graeme A KingMichael N R Ashfold
Mar 4, 2006·The Journal of Chemical Physics·Ming-Fu LinChi-Kung Ni
Jul 7, 2007·The Journal of Chemical Physics·Ming-Fu LinChi-Kung Ni
Aug 21, 2007·The Journal of Chemical Physics·Ming-Fu LinChi-Kung Ni
Aug 20, 2005·The Journal of Chemical Physics·Ming-Fu LinChi-Kung Ni
Oct 13, 2006·The Journal of Chemical Physics·Cheng-Liang HuangChi-Kung Ni
Apr 21, 2010·Physical Chemistry Chemical Physics : PCCP·Chien-Ming TsengJia-Lin Chang
Feb 2, 2010·Physical Chemistry Chemical Physics : PCCP·Michael N R AshfoldAlan G Sage
Oct 17, 2019·The Journal of Chemical Physics·Wan Ru JhangChien-Ming Tseng
Feb 24, 2018·The Journal of Chemical Physics·Yen-Cheng LinChi-Kung Ni
Jun 4, 2011·The Journal of Physical Chemistry. a·Aliaksandr BaidakJay A LaVerne
Feb 28, 2014·The Journal of Physical Chemistry. a·Marcela C CapelloGustavo A Pino
Jun 22, 2012·Journal of the American Chemical Society·Gareth M RobertsVasilios G Stavros
Oct 16, 2007·The Journal of Physical Chemistry. B·Chi-Kung NiYuri A Dyakov

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