FORMATION AND DECOMPOSITION STUDY OF ELECTROCHEMICALLY-GENERATED NICKEL(III)-NOTA COMPLEXES IN AQUEOUS-SOLUTION (NOTA(3-)=1,4,7-TRIAZACYCLONONANE-N,N'N''-TRIACETATE)

• Tipo: Artigo em Revista Científica Internacional
• Data: 1995

Autores

DECASTRO, B (Autor) FCUP; GOMES, J (Autor) Outra; MARQUES, MPM (Autor) Outra; GERALDES, CFGC (Autor) Outra

Revista

Título: Journal of the Chemical Society. Dalton Transactions

Páginas: 2041-2044

ISSN: 1472-7773

Editora: Royal Society of Chemistry

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-GR1

DOI: 10.1039/dt9950002041

Abstract (EN): Electochemical oxidation of the nickel(II) complex at the macrocyclic ligand 1,4,7-triazacylononane-N,N',N''-triacetate (nota(3-)) in aqueous solution yields the nickel(III) complex, which undergoes fast base-promoted chemical decomposition. This decomposition process was studied by cyclic voltammetry, ESR acid electronic spectroscopy, and gave first-order kinetics relative to the nickel(III) complex. This is compatible with intramolecular reduction:of the metal centre by the ligand, followed by rapid decomposition of the radical species formed. The ligand fragmentation process was analysed by proton NMR spectroscopy of the electrolysed solution of the complex.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4