Syntheses and Electrochemical Studies of Bis(eta5-Cyclopentadienyl)-(2,3-Quinoxalinedithiolato)Titanium(IV) Derivatives: Comparison with the Electrochemical Properties of Similar Complexes

• Autor(a) principal: Lena,J.C. de
• Data de Publicação: 1998
• Outros Autores: Garner,C.D.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531998000600013
• topic: dithiolenes; redox properties; titanium(IV) dithiolato

In this work the syntheses of novel bis(eta5-cyclopentadienyl)(2,3-quinoxaline-dithiolato)titanium(IV) derivatives and bis(eta5-cyclopentadienyl)(1-phenyl)(2-methyl)(1,2-ethenedithiolato)titanium(IV) is described. The redox properties of these compounds along with the properties of similar bis(eta5-cyclopentadienyl)(ene-1,2-dithiolato)titanium(IV) complexes are assessed in neutral solutions. All the compounds exhibited a reversible one electron reduction process, the potential at which the reduction occurs being dependent on the nature of the dithiolato ligand. A second reduction process is observed on the 2,3-quinoxaline derivatives. The properties of the latter are also assessed in acidic solution and the presence of H+ has a small effect on both processes, suggesting that the same type of event occurs under both conditions.