Absolute rate constants for some hydrogen atom abstraction reactions by a primary fluoroalkyl radical in waterElectronic supplementary information (ESI) available: Tables of kinetic data and plots of kinetic data. See http://www.rsc.org/suppdata/ob/b3/b313757k/
作者:Li Zhang、Joseph Cradlebaugh、Grzegorz Litwinienko、Bruce E. Smart、Keith U. Ingold、William R. Dolbier, Jr.
DOI:10.1039/b313757k
日期:——
flash photolysis and competitive kinetic methods have been used to measure the absolute bimolecular rate constants for hydrogen atom abstraction in water from a variety of organic substrates including alcohols, ethers, and carboxylic acids by the perfluoroalkyl radical, *CF(2)CF(2)OCF(2)CF(2)SO(3)(-) Na(+). Comparison, where possible, of these rate constants with those previously measured for analogous
激光闪光光解法和竞争动力学方法相结合已用于测量通过全氟烷基自由基* CF(2)从各种有机底物(包括醇,醚和羧酸)中提取氢原子的绝对双分子速率常数。 CF(2)OCF(2)CF(2)SO(3)(-)Na(+)。将这些速率常数与先前在非极性有机溶剂1,3-双(三氟甲基)苯中类似反应的速率常数进行比较(J. Am。Chem。Soc,1999,121,7335),发现醇在水溶剂中的反应速度要快2-5倍,而醚在两种溶剂中的反应速度相同。氢提取的过渡态比“溶剂分离的离子对”更让人联想到“亲密离子对”