Deposition vacancy islands

All vacancy island formation during Sb electrodeposition. Although, attempts to deposit atomic layers of Co onto naked Au surfaces at underpotential were not successful, stable Co upd layers can be formed on the Sb/Au surface. The chemical nature of the CoSb phase formed is under investigation, and will be reported on in the near future. 

The closest analogues of thiols, alkaneselenols R—SeH, were found to form well-packed monolayers on the Au(lll) surface. The structure of these layers was studied by X-ray diffraction. An oblique unit cell was revealed, indicating a distorted hexagonal close-packed lattice of selenol molecules . Benzeneselenol and diphenyl diselenide form identical monolayers on gold, as shown with STM microscopy. Monolayers of benzeneselenol do not have vacancy pits typical for thiolate monolayers, but show the presence of small islands of gold (20-200 A) which were absent before deposition . 

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