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

• Type: Article in International Scientific Journal
• Date: 1995

Authors

DECASTRO, B (Author) FCUP; GOMES, J (Author) Other; MARQUES, MPM (Author) Other; GERALDES, CFGC (Author) Other

Journal

Title: Journal of the Chemical Society. Dalton Transactions

Pages: 2041-2044

ISSN: 1472-7773

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 5 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4