ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Previous studies of 1-ethyl-3-methylimidazolium chloride-aluminium(III) chloride ([emim]Cl-AlCl3) ionic liquids have been hampered by significant contamination of these liquids by oxide impurities. Treatment of these liquids with phosgene removes the oxide impurities, and the use of a specially constructed sample inlet system for air-sensitive materials permitted them to be studied by fast atom bombardment mass spectrometry. The ions Cl-, [Cl2]-, [AlCl4]-, [Al2Cl7]-, [emim]+ and [(emim)2X]+ (X = Cl or AlCl4) were observed for the basic ionic liquid. In addition, the anion [Al3Cl10]- was observed for the acidic composition. Within the mass spectrometer, the hydrolyses of [Al3Cl10]- to produce [Al3Cl8O]- and of [Al2Cl7]- to produce [Al2Cl5O]- were observed. Comparison of these results with published 17O NMR data suggests that the primary hydrolysis products in acidic ionic liquids are [Al3Cl8O]- and [Al2Cl5O]- and that the principal secondary hydrolysis product is [Al2Cl6(OH)]-.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210280706
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