Penta-Coordinated Complexes of Bis(2,4-pentanedionato) Copper(II) with Some Oxygen Donor Organic Solvents

Acetylacetonates of a number of transition metals (e.g., chromium, iron, cobalt, nickel, copper and zinc) have been widely investigated [1, 2] for their various physical and structural properties. Considerable attention seems to have been directed to the addition complexes of copper bis-acetylacetonate with a number of nitrogen donor ligands [3-5] but the addition complexes of Cu(acac)2 with oxygen donor ligands have not been reported so far. The present paper describes the preparation and characterization of a few addition complexes of copper bis-acetyl-acetonate with some oxygen donor ligands. A plausible geometry of these derivatives is proposed on the basis of various spectral and magnetic studies and molecular weight determinations.