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- W4232776314 abstract "Reaction rate constants were determined by pulse radiolysis in the ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate and tetrafluoroborate, N-butylpyridinium tetrafluoroborate, and methyltributylammonium bis(trifluoromethylsulfonyl) imide (R4NNTf2). Oxidation of chlorpromazine and Trolox by CCl3O2· radicals was studied in all the ionic liquids and oxidation of chlorpromazine by Br2·- radicals was studied in R4NNTf2. Reduction of quinones and other compounds was studied both in R4NNTf2 and in the pyridinium ionic liquids. The ionic liquids behave as solvent with much lower polarity than water and also inhibit reactions due to their high viscosity. However, electron transfer from the N-butylpyridinyl radical to various acceptors is more rapid than the diffusion-controlled limit, suggesting an electron hopping mechanism. Electron transfer between methyl viologen and quinones takes place several orders of magnitude more slowly in this ionic liquid than in water or 2-PrOH and the direction of the electron transfer is solvent dependent. In contrast, addition and abstraction reactions of ·CF3 radicals in R4NNTf2 are only slightly slower than those in water and acetonitxrile." @default.
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- W4232776314 date "2003-08-26" @default.
- W4232776314 modified "2023-09-25" @default.
- W4232776314 title "Pulse Radiolysis Studies of Reaction Kinetics in Ionic Liquids" @default.
- W4232776314 doi "https://doi.org/10.1021/bk-2003-0856.ch032" @default.
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