intermolecular hydrogen transfer in isobutane hydrate

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ID: 138931
2012
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Abstract
Electron spin resonance (ESR) spectra of butyl radicals induced with γ-ray irradiation in the simple isobutane (2-methylpropane) hydrate (prepared with deuterated water) were investigated. Isothermal annealing results of the γ-ray-irradiated isobutane hydrate reveal that the isobutyl radical in a large cage withdraws a hydrogen atom from the isobutane molecule through shared hexagonal-faces of adjacent large cages. During this “hydrogen picking” process, the isobutyl radical is apparently transformed into a <em>tert</em>-butyl radical, while the sum of isobutyl and <em>tert</em>-butyl radicals remains constant. The apparent transformation from isobutyl to <em>tert</em>-butyl radicals is an irreversible first-order reaction and the activation energy was estimated to be 35 ± 3 kJ/mol, which was in agreement with the activation energy (39 ± 5 kJ/mol) of hydrogen picking in the γ-ray-irradiated propane hydrate with deuterated water.
Reference Key
sugahara2012energiesintermolecular Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Takeshi Sugahara, Kei Takeya, Mikio Nakagoshi, Takashi Minami, Atsushi Tani, Naohiro Kobayashi, Kazunari Ohgaki
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Journal acs combinatorial science
Year 2012
DOI
10.3390/en5061705
URL
http://www.mdpi.com/1996-1073/5/6/1705
Keywords
electron spin resonance

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