Synthesis and characterization of ionic liquids based upon 1-butyl-2,3-dimethylimidazolium chloride/ZnCl2

Vincent Lecocq; Aurélie Graille; Catherine C. Santini; Anne Baudouin; Yves Chauvin; Jean Marie Basset; Laurence Arzel; Denis Bouchu; Bernard Fenet

doi:10.1039/b413328e

Synthesis and characterization of ionic liquids based upon 1-butyl-2,3-dimethylimidazolium chloride/ZnCl₂

Vincent Lecocq, Aurélie Graille, Catherine C. Santini^*, Anne Baudouin, Yves Chauvin, Jean Marie Basset, Laurence Arzel, Denis Bouchu, Bernard Fenet

^*Corresponding author for this work

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

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Abstract

Trialkylimidazolium chlorozincate molten salts resulting from the combination of zinc chloride and 1-butyl-2,3-dimethylimidazolium chloride, [BMMI][Cl], have been prepared with a mole percent of ZnCl₂, R (R = n_ZnCl2/n_ZnCl2 + n_[BMMI][Cl]) equal to 0, 0.1, 0.25, 0.33, 0.5, 0.66, 0.75. Their analyses by DSC, ¹³C, ¹H and ³⁵Cl solid state and solution NMR, and mass spectrometry (ESI, MS/MS) are consistent with the presence of [BMMI][Cl] and [BMMI][ZnCl₃] for R < 0.5; pure [BMMI][ZnCl₃] for R = 0.5, and [BMMI][ZnCl₃] with [BMMI][Zn₃Cl₇] for R > 0.5. Infrared spectra realized in the presence of pyridine show that the Lewis acidity of ZnCl₂-[BMMI][Cl] increases with R. High temperature (110 °C) ¹³C and ³⁵Cl NMR experiments on neat [BMMI][ZnCl₃] (R = 0.5) evidenced that its structure varies with time from [BMMI][ZnCl₃] to [BMMI⋯Cl⋯ZnCl₂].

Original language	English (US)
Pages (from-to)	700-706
Number of pages	7
Journal	New Journal of Chemistry
Volume	29
Issue number	5
DOIs	https://doi.org/10.1039/b413328e
State	Published - May 2005
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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@article{aebaef006a8d464195d06f06636f5834,

title = "Synthesis and characterization of ionic liquids based upon 1-butyl-2,3-dimethylimidazolium chloride/ZnCl2",

abstract = "Trialkylimidazolium chlorozincate molten salts resulting from the combination of zinc chloride and 1-butyl-2,3-dimethylimidazolium chloride, [BMMI][Cl], have been prepared with a mole percent of ZnCl2, R (R = nZnCl2/nZnCl2 + n[BMMI][Cl]) equal to 0, 0.1, 0.25, 0.33, 0.5, 0.66, 0.75. Their analyses by DSC, 13C, 1H and 35Cl solid state and solution NMR, and mass spectrometry (ESI, MS/MS) are consistent with the presence of [BMMI][Cl] and [BMMI][ZnCl3] for R < 0.5; pure [BMMI][ZnCl3] for R = 0.5, and [BMMI][ZnCl3] with [BMMI][Zn3Cl7] for R > 0.5. Infrared spectra realized in the presence of pyridine show that the Lewis acidity of ZnCl2-[BMMI][Cl] increases with R. High temperature (110 °C) 13C and 35Cl NMR experiments on neat [BMMI][ZnCl3] (R = 0.5) evidenced that its structure varies with time from [BMMI][ZnCl3] to [BMMI⋯Cl⋯ZnCl2].",

author = "Vincent Lecocq and Aur{\'e}lie Graille and Santini, {Catherine C.} and Anne Baudouin and Yves Chauvin and Basset, {Jean Marie} and Laurence Arzel and Denis Bouchu and Bernard Fenet",

year = "2005",

month = may,

doi = "10.1039/b413328e",

language = "English (US)",

volume = "29",

pages = "700--706",

journal = "New Journal of Chemistry",

issn = "1144-0546",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Synthesis and characterization of ionic liquids based upon 1-butyl-2,3-dimethylimidazolium chloride/ZnCl2

AU - Lecocq, Vincent

AU - Graille, Aurélie

AU - Santini, Catherine C.

AU - Baudouin, Anne

AU - Chauvin, Yves

AU - Basset, Jean Marie

AU - Arzel, Laurence

AU - Bouchu, Denis

AU - Fenet, Bernard

PY - 2005/5

Y1 - 2005/5

N2 - Trialkylimidazolium chlorozincate molten salts resulting from the combination of zinc chloride and 1-butyl-2,3-dimethylimidazolium chloride, [BMMI][Cl], have been prepared with a mole percent of ZnCl2, R (R = nZnCl2/nZnCl2 + n[BMMI][Cl]) equal to 0, 0.1, 0.25, 0.33, 0.5, 0.66, 0.75. Their analyses by DSC, 13C, 1H and 35Cl solid state and solution NMR, and mass spectrometry (ESI, MS/MS) are consistent with the presence of [BMMI][Cl] and [BMMI][ZnCl3] for R < 0.5; pure [BMMI][ZnCl3] for R = 0.5, and [BMMI][ZnCl3] with [BMMI][Zn3Cl7] for R > 0.5. Infrared spectra realized in the presence of pyridine show that the Lewis acidity of ZnCl2-[BMMI][Cl] increases with R. High temperature (110 °C) 13C and 35Cl NMR experiments on neat [BMMI][ZnCl3] (R = 0.5) evidenced that its structure varies with time from [BMMI][ZnCl3] to [BMMI⋯Cl⋯ZnCl2].

AB - Trialkylimidazolium chlorozincate molten salts resulting from the combination of zinc chloride and 1-butyl-2,3-dimethylimidazolium chloride, [BMMI][Cl], have been prepared with a mole percent of ZnCl2, R (R = nZnCl2/nZnCl2 + n[BMMI][Cl]) equal to 0, 0.1, 0.25, 0.33, 0.5, 0.66, 0.75. Their analyses by DSC, 13C, 1H and 35Cl solid state and solution NMR, and mass spectrometry (ESI, MS/MS) are consistent with the presence of [BMMI][Cl] and [BMMI][ZnCl3] for R < 0.5; pure [BMMI][ZnCl3] for R = 0.5, and [BMMI][ZnCl3] with [BMMI][Zn3Cl7] for R > 0.5. Infrared spectra realized in the presence of pyridine show that the Lewis acidity of ZnCl2-[BMMI][Cl] increases with R. High temperature (110 °C) 13C and 35Cl NMR experiments on neat [BMMI][ZnCl3] (R = 0.5) evidenced that its structure varies with time from [BMMI][ZnCl3] to [BMMI⋯Cl⋯ZnCl2].

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U2 - 10.1039/b413328e

DO - 10.1039/b413328e

M3 - Article

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SN - 1144-0546

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ER -

Synthesis and characterization of ionic liquids based upon 1-butyl-2,3-dimethylimidazolium chloride/ZnCl₂

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