Low-temperature spectroelectrochemistry of tetraethylammonium tris(ethylxanthato)nickelate(II) and bis(ethylxanthato)nickel(II) complexes

Onal A., Isci H., Yaman S.

INORGANIC REACTION MECHANISMS, vol.4, pp.133-139, 2002 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 4
  • Publication Date: 2002
  • Doi Number: 10.1080/1028662021000062527
  • Journal Name: INORGANIC REACTION MECHANISMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.133-139
  • Middle East Technical University Affiliated: Yes

Abstract

One-electron constant potential electrolysis of tetraethylammonium tris(ethylxanthato)nickelate(II), (NEt4 )[Ni(S2COEt)(3)] and bis(ethylxanthato)nickel(II), Ni(S-2 COEt) (2) , at their lowest oxidation peak potentials, were followed by in situ UV-VIS spectrophotometry, in acetonitrile at 253 K. In both cases [Ni-III (S2COEt)(3)] complex formed and detected by its electronic absorption and EPR spectra. [Ni-III (S2COEt)(3)] slowly disproportionated to Ni(S2COEt)(2) and the dimer of the oxidized ethylxanthate ligand, (S2COEt)(2) , with a second-order rate law.