ORGN 369

We are interested in the development of imidazole derived materials as candidates for hydrogen storage. We previously prepared hydrogen rich imidazolium tetrahydroborates (I) and imidazolium tetraalkoxyborate (II) as substrates for investigation.^1,2 Our attention has recently turned to imidazolium tetraimidazolylborates and this poster reports on the synthesis and structure of 1,3-disubstituted imidazolium (III) and imidazolinium (IV) tetrakisimidazolylborates. These imidazol(in)ium salts are studied and compared regarding their behavior at high temperature under vacuo and also as hydrogen storage substrates.

*We gratefully acknowledge support for this research from the Department of Energy Office of Energy Efficiency and Renewable Energy under the Hydrogen Storage Grand challenge, Solicitation No. DE-PS36-03GO03013 and E. I. Du Pont Nemours and Co., Inc.

1) Arduengo, A. J., III; Unverzagt, M.; Jockisch, A. unpublished results.

2) Steinhof, O., Diplomarbeit im Studiengang Chemie “Investigation in the field of carbene-boron chemistry”, Technische Universität Carlo-Wilhelmina zu Braunschweig in Zusammenarbeit mit dem Department of Chemistry, University of Alabama, Tuscaloosa, December 2003.