Copper(I) and Iron(II) Complexes of a Novel Tris(pyridyl)ethane-Derived N₄ Ligand: Aspects of Redox Behaviour and Bioinorganic Physicochemistry

Abstract

The N₄ ligand 1-{6-[1,1-bis(pyridin-2-yl)ethyl]pyridin-2-yl}-N,N-dimethylmethanamine (L) is presented. It has been used to obtain the copper(I) complex [CuL(MeCN)]PF₆ and the iron(II) complex [Fe(CN)₂L]. Aerobic oxidation of the copper(I) complex is unspecific at room temperature. Anaerobic oxidation in solution, which is very sluggish, occurs with formation of the copper(II) complex [Cu^IIFL]PF₆, suggesting concomitant hydrolysis of hexafluorophosphate initiated by traces of water. The iron(II) complex adsorbed at a TiO₂ surface is an efficient photosensitiser of the support. Photoelectrochemical photocurrent switching (PEPS), which can be initiated by changing the electrochemical potential and photon energy, is very pronounced. The construction of a simple photoelectrochemical NOR logic gate has been demonstrated.

Dr. Dennis Wiedemann

Technischer Berater für Umweltfragen
Chemiker · Kristallograph

Ich bin promovierter Chemiker und berate zu immissionsschutz- und wasserrechtlichen Genehmigungsfragen.