Unique Co chemisorption properties of gold hexamer: Au6(CO)(sub n)-(n=0-3)

A combined photoelectron spectroscopy (PES) and density functional theory (DFT) investigation of the CO chemisorption behavior on the gold hexamer from one to three CO groups Au6(CO)(sub n)-(n=0-3) is reported. While the electron donor capability of CO is known to decrease the electron binding energies of Aum(CO)(sub n)-complexes, CO chemisorption on Au6(CO)(sub n)-(n=1-3) is observed to have very little effect on the electron binding energies of the first PES band of Au6(CO)(sub n)-(n=1-3).