Low-temperature Spectroelectrochemistry of Tetraethylammonium Tris(ethylxanthato)nickelate(II) and Bis(ethylxanthato)nickel(II) Complexes
Authors: Önal A.M.; Isci H.; Özalp Yaman S.
Source: Inorganic Reaction Mechanisms, Volume 4, Numbers 3-4, 1 January 2002 , pp. 133-139(7)
Publisher: Taylor and Francis Ltd
Abstract:One-electron constant potential electrolysis of tetraethylammonium tris(ethylxanthato)nickelate(II), (NEt4)[Ni(S2COEt)3] and bis(ethylxanthato)nickel(II), Ni(S2COEt)2, at their lowest oxidation peak potentials, were followed by in situ UV-VIS spectrophotometry, in acetonitrile at 253 K. In both cases [NiIII(S2COEt)3] complex formed and detected by its electronic absorption and EPR spectra. [NiIII(S2COEt)3] slowly disproportionated to Ni(S2COEt)2 and the dimer of the oxidized ethylxanthate ligand, (S2COEt)2, with a second-order rate law.
Document Type: Research article
Publication date: 2002-01-01