- 作者: 翟翠萍,宋愛新,劉維民,汪漢卿
- 作者服務機構: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- 中文摘要: The paramagnetic complexes formed in Friedel-Crafts alkylation reaction systems are invistigated by electron spin resonance (ESR) spectroscopy, in room temperature ionic liquids system 1-butyl-3-methyllimidazolium chloride-aluminium chloride ([bmim]Cl-AlCl3). The results indicate that ESR spectra observed are due to polycyclic aromatic radical cations formed from their parent hydrocarbons. ESR spectrum of spin adduct is obtained in an ionic liquid system composed of [bmim]Cl-AlCl3. In acidic solution the 14N hyperfine coupling constant of 4-oxo-TEMPO, 2.15 mT, is appreciably larger due to an adduct formed with AlCl3.
- 英文摘要: --
- 中文關鍵字: ESR; Cation radical; Ionic liquids; Friedel-Crafts alkylation.
- 英文關鍵字: --