The Lewis Base Behaviour of Copper (Ii) Nitroxyl free Radical Complex (Cul2)- Reaction With Acetic Acid

E. M. R. Kiremire¹, G.Kumar¹, K. Chibale², J. C. A. Boeyens² and J.Vanwyk³

¹Department of Chemistry, University of Zambia, Lusaka, Zambia.

²Department of Chemistry, University of Cape Town.Randebosch 7701 South Africa.

³Departmet of Chemistry, University of Witwatersr and, 2050 Johannesburg South Africa.

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ABSTRACT:

The reaction of Copper(ll) nitroxyl ligand complex, CuL₂(L=4-phenacetylidene-2,2,5,5,-tetramethyl-imidazolidin-1-oxyl) with acetic acid has been studied. A plausible mechanism for the reaction indicated the proton attack on the lone pair of the nitrogen atom of the nitroxyl chelating ligand resulting in the regeneration of the parent ligand and acetate ion. Hence copper (II) nitroxyl complex act as a Lewis base.

KEYWORDS:

nitroxyl; phenacetylidene; tetramethyl imidazolidin