Syntheses of unprecedented low-valent titanium species

CHED 1247

Eric D. Smolensky, smol0040@mrs.umn.edu1, John E. Ellis, ellis@chem.umn.edu2, and Robert Jilek2. (1) Department of Chemistry, University of Minnesota, Morris, 600 East 4th St., Morris, MN 56267, (2) Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, MN 55455
The preparation of subvalent polyarene transition metal complexes is a relatively new and poorly explored area of chemistry.  The aim of this research is to synthesize a homoleptic polyarene titanium (II-) compound, namely [K(18-crown-6)]2[Ti(C14H10)3].  Further research involves the reactions of [Ti(C14H10)3]2- with various other acceptor ligands; for example PF3, CO, pyrene, and ethylene.  Characterization techniques, mainly NMR and IR, are used to identify the products.  The results suggest, with reasonable certainty, the successful synthesis of [K(18-crown-6)]2[Ti(C14H10)3] under moderate reaction conditions.  Additionally, the spectra collected from the reactions with acceptor ligands indicate, in most cases, successful substitution reactions.  Current and future work involves characterization of the products in the solid-state via X-ray diffraction.