Abstract
The spectrochemical properties of Pt(bpy)(CN) 2 are reported on both roughened Ag and polished Pt electrodes. On the basis of the presence of a weak emission and a very strong resonance Raman spectrum (RRS) with visible excitation, it is concluded that Pt(bpy)(CN) 2 forms linear chains on both surfaces. Since both the emission and RRS are very potential dependent, being observed at −500±50 mV, the approximate E 1/2 of the bipyridine reduction, and the RRS consists exclusively of bipyridine modes, we conclude that linear chain growth is the result of partial reduction of the bipyridine π system and visible absorption is due to a π→π* transition that has red shifted considerably due to the band formation resulting from bipyridine-bipyridine interaction along the chain
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