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

• Type: Article in International Scientific Journal
• Date: 1994

Authors

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

Journal

Title: Journal of the Chemical Society. Dalton Transactions

Pages: 571-576

ISSN: 1472-7773

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 17 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6