Electron paramagnetic resonance spectra of aliphatic ketyl radical anions in fluid solution
作者:Alwyn G. Davies、Anthony G. Neville
DOI:10.1039/p29920000163
日期:——
aliphatic ketyl radical anions in solution for study by EPR spectroscopy. These methods involve either photolysis of a solution of potassium in the corresponding alcohol (which probably proceeds by initial electron transfer to the solvent), or abstraction of a hydrogen atom from the corresponding alcohol by photolytically generated tert-butoxyl radicals under strongly basic conditions. The EPR spectra of
已经开发了用于在溶液中产生脂族酮基自由基阴离子的改进方法,以通过EPR光谱研究。这些方法包括对钾在相应醇中的溶液进行光解(可能通过初始电子转移到溶剂中进行),或在强碱性条件下通过光解生成的叔丁氧基从相应醇中提取氢原子。描述了许多新的醛和酮自由基离子的EPR光谱,并将其与共轭酸的光谱进行了比较。a(13的值发现丙酮自由基阴离子中的C-α)为52.2 G,确认它是非平面的。环己酮自由基阴离子中环的反转的Arrhenius参数为E a = 6.6 kcal mol –1,log(A / s –1)= 13.2。