کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1409244 | 1501794 | 2012 | 5 صفحه PDF | دانلود رایگان |
Hydrogen transfer reactions at the ground and excited states of tert-butyl radical to form iso-butyl radical have been investigated by means of ab initio calculation and electron spin resonance (ESR) spectroscopy. It was found that tert-butyl radical irradiated with 254 nm ultraviolet light converts quite efficiently to iso-butyl radical. Also, it was suggested that this conversion occurs as an intramolecular hydrogen transfer from a methyl group of tert-butyl radical to a radical site (central carbon atom). The theoretical calculations showed that barrier height of hydrogen transfer at the excited state is significantly lower than that of ground state. The mechanism of internal hydrogen atom conversion from tert-butyl to iso-butyl radicals was discussed.
► In this study, we studies intramolecular hydrogen transfer reaction of tert-butyl radical.
► Electron spin resonance (ESR) spectra were measured.
► Also, density functional theory (DFT) calculation was carried out.
► It was found that tert-butyl radical converts efficiently to iso-butyl radical.
► Mechanism of reaction was discussed on the basis of DFT calculations.
Journal: Journal of Molecular Structure - Volume 1020, 8 August 2012, Pages 1–5