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Electrochemical and spectroelectrochemical study of copper complexes with 1,10-phenanthrolines

Sanna, Gavino and Pilo, Maria Itria and Zoroddu, Maria Antonietta and Seeber, Renato and Mosca, Stefano (1993) Electrochemical and spectroelectrochemical study of copper complexes with 1,10-phenanthrolines. Inorganica Chimica Acta, Vol. 208 (2), p. 153-158. ISSN 0020-1693. Article.

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DOI: 10.1016/S0020-1693(00)85115-4

Abstract

The redox behaviour of a series of copper(II) complexes with different phenanthrolines (1:2 metal to ligand) in dimethylformamide solvent is reported. Cyclic voltammetry, controlled potential coulometry and spectroelectrochemistry in the visible region have been used. Accurate values for the formal potential of the copper(II)/ copper(I) couples could be computed by spectroelectrochemistry, also in those cases in which the systems are poorly reversible. Two further reductions lead to neutral and anionic copper species, respectively. The nature of the substituents on the phenanthroline ligands has been found to affect strongly the redox potential of the former couples, while a less marked influence on the latter ones has been evidenced. On the other hand, differences in the ligands induce very different kinetic stability of the copper complexes formed in the more cathodic processes.

Item Type:Article
ID Code:3693
Status:Published
Refereed:Yes
Uncontrolled Keywords:Redox behaviour, copper(II) complexes, kinetic stability
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di chimica biomolecolare, Sassari
Publisher:Elsevier
ISSN:0020-1693
Deposited On:07 Apr 2010 12:42

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