Resumo

VIEIRA, L.M.C.; FONSECA, A.M.; RAPOSO, M.M.M.  e  KIRSCH, G.. Electrochemical and Spectroscopic Studies of Pyridazine Derivatives. Port. Electrochim. Acta [online]. 2004, vol.22, n.1, pp.11-18. ISSN 0872-1904.

This work reports on cyclic voltammetry and spectroscopic UV-Vis investigations of some pyridazine derivatives 1-8 in dimethylformamide. In the electrochemical study, monochlorinated pyridazines 2-8 exhibit two reductions but in the case of dichlorinated derivative 1 an additional wave is seen for the reduction of the second carbon-chloride bond. The electronic absorption spectra display an intramolecular charge transfer band π-π* in the UV region of which depend substantially on the nature of both donor and acceptor moieties. These results indicate the π-electron delocalization in the conjugated system

Palavras-chave : pyridazines; electrochemistry; electronic spectra; donor- -bridge-acceptor systems.

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