Zirconium complexes with the trifunctional 3-cyanopentane-2,4-dionate ligand

Abstract

Five zirconium complexes containing the 3-cyanopentane-2,4-dionate and 2-cyano-1-phenylbutane-1,3-dionate ligands (L) have been prepared: [ZrCl₂(C₆H₆NO₂)₂], [ZrCl₂(C₁₁H₈NO₂)₂], [ZrCl(C₆H₆NO₂)₃], [Zr(C₆H₆NO₂)₄], and [Zr(η-C₅H₅)(C₆H₆NO₂)₃]. Infrared data shows that all β-diketonate ligands are co-ordinated to the metal centre through both oxygens; however, in complexes of the type [ZrCl₂L₂] and [ZrCIL₃] the cyano-group appears to be co-ordinated as well.