Comparative study of the electrochemical and pulse-radiolytic oxidation of the complexes of nickel(II) and copper(II) containing 1,4,8,11-tetra-azacyclotetradecane
Document Type
Article
Date of Original Version
12-1-1980
Abstract
Electrochemical and pulse-radiolytic oxidation of [Ni(cyclam)]2+ and [Cu(cyclam)]2+ (cyclam = 1,4,8,11-tetra-azacyclotetradecane) have been studied in aqueous acidic perchlorate and sulphate media. As with other nickel macrocyclic systems, [Ni(cyclam)]2+ is oxidized to NiIII, the stability of which is enhanced by sulphate complexation. In contrast, [Cu(cyclam)]3+ is much less stable than the nickel analogue and does not form a stable sulphate complex. Electrochemical oxidation of [Cu(cyclam)]2+ at pH 1.6 is a multistep process which is catalysed by sulphate ion. The mechanism appears to involve the transfer of four electrons resulting in a copper(II) macrocyclic diene complex. © Copyright 1980 by The Royal Chemical Society.
Publication Title, e.g., Journal
Journal of the Chemical Society, Dalton Transactions
Issue
7
Citation/Publisher Attribution
Zeigerson, Esther, Gregory Ginzburg, Dan Meyerstein, and Louis J. Kirschenbaum. "Comparative study of the electrochemical and pulse-radiolytic oxidation of the complexes of nickel(II) and copper(II) containing 1,4,8,11-tetra-azacyclotetradecane." Journal of the Chemical Society, Dalton Transactions 7 (1980). doi: 10.1039/DT9800001243.