Abstract
We have investigated the adsorption and reaction of Cu(hfac) (vtms) (hexafluoroacetylacetonate, hfac; vinyl trimethyl silane, vtms) on a Cu(111) surface. The recombinative desorption of Cu(hfac)(vtms) and disproportionation reaction between adsorbed Cu(hfac) molecules were observed to occur between 240 and 400 K. The adsorption geometries of Cu(hfac) on Cu(111) have been also calculated by means of the extended Hückel method. It is found that the standing Cu(hfac) is more stable and favored for a cleavage of Cu–O bonds than the lying-down Cu(hfac) on the Cu(111) surface.
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