Preparation and characterisation of high-density ionic liquids incorporating halobismuthate anions

Nico E A Cousens; Leah J Taylor Kearney; Matthew T Clough; Kevin R J Lovelock; Robert G Palgrave; Susan Perkin

doi:10.1039/c4dt00755g

Preparation and characterisation of high-density ionic liquids incorporating halobismuthate anions

Dalton Trans. 2014 Jul 28;43(28):10910-9. doi: 10.1039/c4dt00755g.

Authors

Nico E A Cousens¹, Leah J Taylor Kearney, Matthew T Clough, Kevin R J Lovelock, Robert G Palgrave, Susan Perkin

Affiliation

¹ Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK. susan.perkin@chem.ox.ac.uk.

PMID: 24898158
DOI: 10.1039/c4dt00755g

Abstract

A range of ionic liquids containing dialkylimidazolium cations and halobismuthate anions ([BiBr(x)Cl(y)I(z)](-) and [Bi2Br(x)Cl(y)I(z)](-)) were synthesised by combining dialkylimidazolium halide ionic liquids with bismuth(III) halide salts. The majority were room temperature liquids, all with very high densities. The neat ionic liquids and their mixtures with 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide were characterised using Densitometry, Viscometry, NMR Spectroscopy, Electrospray Ionisation Mass Spectrometry (ESI), Liquid Secondary Ion Mass Spectrometry (LSIMS), Matrix-assisted Laser Desorption/Ionization Mass Spectrometry (MALDI), X-Ray Photoelectron Spectroscopy (XPS) and Thermogravimetric Analysis (TGA), to establish their speciation and suitability for high-temperature applications.