DECOMPOSITION OF CHEMICALLY AND ELECTROCHEMICALLY GENERATED NICKEL(III) COMPLEXES WITH N2O2 SCHIFF-BASE LIGANDS

• Tipo: Artigo em Revista Científica Internacional
• Data: 1994

Autores

DECASTRO, B (Autor) FCUP; FREIRE, C (Autor) FCUP; PEREIRA, E (Autor) FCUP

Revista

Título: Journal of the Chemical Society. Dalton Transactions

Páginas: 571-576

ISSN: 1472-7773

Editora: Royal Society of Chemistry

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 15 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-KCT

DOI: 10.1039/dt9940000571

Abstract (EN): Electrochemical oxidation and oxidation by iodine of nickel(II) complexes of tetradentate Schiff bases, derived from salicylaldehyde and 2-hydroxynaphthaldehyde, in dimethyl sulfoxide solutions yielded nickel(III) complexes, which underwent slow chemical decomposition. The kinetics of decomposition of these nickel(III) species has been studied, and the results compared with those previously reported for decomposition reactions of macrocyclic nickel(III) complexes with tetraaza macrocyclic and porphyrin ligands. It is suggested that decomposition proceeds through an initial intramolecular electron transfer, followed by reaction of the nickel(II) radical complex thus formed with other nickel species or substrates present in solution.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6