Tuesday, May 20, 2008
Student Union Building, Upper (Queensborough Community College)
548

Toward Photochemical CO2 Reduction by Rhenium Complexes

Sean E. Hightower1, David C. Grills1, Jinzhu Chen1, Koji Tanaka2, and Etsuko Fujita1. (1) Brookhaven National Laboratory, Upton, NY, (2) Institute for Molecular Science and CREST, Okazaki, Japan

Rhenium complexes with NAD+ model ligands, Re(pbn)(CO)3Cl and [Re(pbn)(CO)3(PCy3)]+ (pbn = 2-(2-pyridyl)-benzo[b]-1,5-naphthyridine, Cy = cyclohexyl) were prepared. Our preliminary results indicate that the corresponding complexes with pbnHH (i.e., a bio-inspired NADH-like ligand) are formed upon irradiation in the presence of a sacrificial donor (e.g., Et3N) through metal-to-ligand charge-transfer (MLCT) excited states. Herein we report the acid-base properties, electrochemical properties, and reactivity of these species toward CO2 reduction.

The research carried out at Brookhaven National Laboratory was supported under contract DE-AC02-98CH10886 with the U.S. Department of Energy.


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