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Electrochemical properties of gold(III) complexes with 2,2′-bipyridine and oxygen ligands

Sanna, Gavino and Pilo, Maria Itria and Minghetti, Giovanni and Cinellu, Maria Agostina and Spano, Nadia and Seeber, Renato (2000) Electrochemical properties of gold(III) complexes with 2,2′-bipyridine and oxygen ligands. Inorganica Chimica Acta, Vol. 310 (1), p. 34-40. ISSN 0020-1693. Article.

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DOI: 10.1016/S0020-1693(00)00264-4

Abstract

The electrochemical behavior of a series of five cationic species containing the Au(bipy)3+ moiety and additional oxygen-donor ligands, and of the relevant common precursor, i.e. the dichloride [Au(bipy)Cl2][PF6] species, have been investigated using cyclic voltammetry and controlled-potential coulometry. All the compounds with oxygen-containing ligand(s) (2–6) undergo an easy, irreversible one-electron reduction process. The first reduction process of the dichloride consists of an equally easy but quasi-reversible charge transfer, as evidenced by voltammetric tests at a very high scan rate, followed by an irreversible second-order chemical reaction. Correlations between the relative values of the reduction potentials and the corresponding molecular structure are made and hypotheses on the nature of the reduction mechanisms are advanced.

Item Type:Article
ID Code:3700
Status:Published
Refereed:Yes
Uncontrolled Keywords:Gold compounds, electrochemistry, oxygen ligands, 2,2′-bipyridine ligands
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
Publisher:Elsevier
ISSN:0020-1693
Copyright Holders: © 2000 Elsevier Science
Deposited On:09 Apr 2010 10:45

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