C60与甲基醚CH3OCnH2n+1的气相离子分子反应研究

自宏观量合成和分离C60以来,人们不断地合成各种功能化的C60衍生物1].在对C60化学性质的认识过程中,气相离子化学一直起着十分重要的作用.Bohme等2]在SIFT质谱仪上、研究了C60的单、双、三电荷离子与水、醇、醚、醛、酮、酯和胺等的气相反应.

Gas-Phase Ion-molecule Reactions of C60 with Methyl Ethers CH3OCnH2n+1

Gas phase ion molecule reactions of buckminsterfullerene (C 60 ) with the ion systems generated from the self chemical ionization of alkyl methyl ethers(CH 3OC n H 2n+1 , n= 2, 3, 4 ) were studied in the ion source of a mass spectrometer. The adduct cation C 60 C 2H 5O + and protonated molecular ion C 60 H + were observed as the major products. The former was produced by the reactions of C 60 with the methoxymethyl ion CH 3OCH 2 +, the latter corresponded to the proton transfer reactions from the protonated alkyl methyl ethers to C 60 . It is suggested that the 3+2 cycloadduct is the most favorable structure among the probable isomers with special chemical properties. Our investigation provides the guidance for the synthesis of this compound in condensed phase.