Exploring and exploiting intermolecular bonding in dimethylthallium(III) alkoxides

INOR 242

Glen G. Briand, gbriand@mta.ca1, J. Ian McKelvey1, Daniel J. MacDonald1, and Andreas Decken2. (1) Department of Chemistry, Mount Allison University, 63C York Street, Sackville, NB E4L1G8, Canada, (2) Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 6E2, Canada
Volatile thallium alkoxides have potential utility as precursors for the preparation of thallium oxide ceramics and semiconductors via chemical vapor deposition. A possible route to thallium oxide precursors is via diorgano-thallium(III) alkoxides (i.e. R2TlOR′), which are a stable class of thallium(III) compound. However, the only structurally characterized compound suitable for potential CVD applications, Me2TlOPh, has been shown to dimerize in the solid state via Tl…O intermolecular interactions (1). We are attempting to preclude the formation of these intermolecular contacts through the addition of steric bulk around the thallium-oxygen bond, with the goal of identifying more volatile monomeric species. Conversely, we are also preparing dinuclear thallium-alkoxide species via dialkoxide ligands, which display interesting polymeric solid-state structures via intermolecular Tl…O bonding. The preparative routes to these diorganothallium alkoxides will be discussed, as well as spectroscopic and structural data.

(1) Burke, P.J.; Gray, L.A.; Hayward, P.J.C.; Matthews, R.W.; McPartlin, M. J. Organometal. Chem., 1977, C7.

 

Main Group Chemistry
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Inorganic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007