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RESEARCH ARTICLE
Contents Vol 66(3)

1,3-Di(alkoxy)imidazolium-based Ionic Liquids: Improved Synthesis and Crystal Structures

Carmen Froschauer A B D , Robert Salchner A , Gerhard Laus A , Hedda K. Weber B , Richard Tessadri C , Ulrich Griesser A , Klaus Wurst A , Volker Kahlenberg C and Herwig Schottenberger A
+ Author Affiliations
- Author Affiliations

A Faculty of Chemistry and Pharmacy, University of Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria.

B Competence Center of Wood Composites and Wood Chemistry K-Plus, Altenberger Strasse 69, 4021 Linz, Austria.

C Institute of Mineralogy and Petrography, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria.

D Corresponding author. Email: carmen.froschauer@uibk.ac.at

Australian Journal of Chemistry 66(3) 391-395 https://doi.org/10.1071/CH12485
Submitted: 24 October 2012  Accepted: 19 January 2013   Published: 22 February 2013

Abstract

A new and convenient synthetic pathway to 1,3-di(alkoxy)imidazolium bis(trifluoromethylsulfonyl)amides and novel 1,3-di(alkoxy)imidazolium tetrachloroferrates was developed. As an intermediate isolation step of the respective hexafluorophosphates was required in previously reported preparations, they suffered from low overall yields and additional expense. The use of FeCl3/HCl resulted in substantially improved yields and allows one-pot preparations with good scalability. Results of single-crystal X-ray structure determination of the new tetrachloroferrate salts are discussed.


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