Generation and Chemistry of Fluorinated Acetoxyl and Oxyallyl Biradical Anions (Distonic Radical Anions) in the Gas Phase
作者:Meili Zhong、Michael L. Chabinyc、John I. Brauman
DOI:10.1021/ja960832q
日期:1996.1.1
radical complex followed by a secondary reaction of the fluoride anion with the neutral radical, either nucleophilic substitution or proton transfer, to yield a biradical anion (distonic radical anion). These radical anions were isolated and their chemical properties were studied. They undergo reactions characteristic of closed-shell anions, e.g. proton transfer, or characteristic of open-shell species
FT-ICR 光谱仪中氟化乙酰化合物 RCOCF3 (R = OH, OSi(CH3)3, OCH3, CF3COCH2, CH3COCH2, CH3, 3,5-(CF3)2C6H3CH2) 的电子影响产生 m/z = [ M-HF]。这些产物被提议通过两步机制产生:在电子撞击时,中性前体产生氟离子-中性自由基复合物,然后氟阴离子与中性自由基发生二次反应,亲核取代或质子转移,以产生双自由基阴离子(不均匀自由基阴离子)。分离出这些自由基阴离子并研究了它们的化学性质。它们经历闭壳阴离子的反应特征,例如质子转移,或开壳物种的特征,例如自由基加成消除反应。