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Chem. Commun., 2006, 4125 - 4127, DOI: 10.1039/b608236j

Efficient stabilization of copper(III) in tetraaza pseudo-macrocyclic oxime-and-hydrazide ligands with adjustable cavity size

Igor O. Fritsky, Henryk Kozowski, Olga M. Kanderal, Matti Haukka, Jolanta witek-Kozowska, Elbieta Gumienna-Kontecka and Franc Meyer

Substitution of the amide donors in open-chain {2N(oxime), 2N(amide)} ligands by hydrazide donors gives new pseudo-macrocyclic copper complexes that show a significant decrease of the Cu3+/2+ redox potentials in both mono- and polynuclear systems, thus demonstrating a pronounced capacity of such ligand systems to efficiently stabilize the trivalent copper.

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