ESR studies on a Friedel-Crafts alkylation reaction in [bmim]Cl-AlCl 3 ionic liquid

Cui Ping Zhai; Ai Xin Song; Wei Min Liu; Han Qing Wang

doi:10.1002/jccs.200600118

ESR studies on a Friedel-Crafts alkylation reaction in [bmim]Cl-AlCl ₃ ionic liquid

Cui Ping Zhai, Ai Xin Song, Wei Min Liu, Han Qing Wang

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	887-890
Number of pages	4
Journal	Journal of the Chinese Chemical Society
Volume	53
Issue number	4
DOIs	https://doi.org/10.1002/jccs.200600118
State	Published - Aug 2006
Externally published	Yes

Keywords

Cation radical
ESR
Friedel-Crafts alkylation
Ionic liquids

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10.1002/jccs.200600118

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title = "ESR studies on a Friedel-Crafts alkylation reaction in [bmim]Cl-AlCl 3 ionic liquid",

abstract = "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.",

keywords = "Cation radical, ESR, Friedel-Crafts alkylation, Ionic liquids",

author = "Zhai, {Cui Ping} and Song, {Ai Xin} and Liu, {Wei Min} and Wang, {Han Qing}",

year = "2006",

month = aug,

doi = "10.1002/jccs.200600118",

language = "英语",

volume = "53",

pages = "887--890",

journal = "Journal of the Chinese Chemical Society",

issn = "0009-4536",

publisher = "John Wiley and Sons Inc",

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TY - JOUR

T1 - ESR studies on a Friedel-Crafts alkylation reaction in [bmim]Cl-AlCl 3 ionic liquid

AU - Zhai, Cui Ping

AU - Song, Ai Xin

AU - Liu, Wei Min

AU - Wang, Han Qing

PY - 2006/8

Y1 - 2006/8

N2 - 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.

AB - 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.

KW - Cation radical

KW - ESR

KW - Friedel-Crafts alkylation

KW - Ionic liquids

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DO - 10.1002/jccs.200600118

M3 - 文章

AN - SCOPUS:34047187939

SN - 0009-4536

VL - 53

SP - 887

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JO - Journal of the Chinese Chemical Society

JF - Journal of the Chinese Chemical Society

IS - 4

ER -

ESR studies on a Friedel-Crafts alkylation reaction in [bmim]Cl-AlCl ₃ ionic liquid

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Keywords

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