Abstract
The surface reactions of Pt(PF 3) 4 on Pt(111) and polycrystalline platinum have been examined under ultra-high vacuum conditions using Auger electron spectroscopy, temperature programmed desorption and secondary ion mass spectrometry techniques. For both surfaces, the dissociation of Pt(PF 3) 4 on platinum takes place below 500 K and gives rise to an intermediate state in which PF 3 is chemisorbed on the platinum surface. On Pt(111) single crystal surface, a condensed state of Pt(PF 3) 4 is observed at 170 K for high coverage dosing. On a polycrystalline Pt surface, a desorption state of the reactant occurs at very high temperature, presumably from a recombination reaction of chemisorbed surface fragments.
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