²⁷Al, ¹³C and ¹H NMR spectral studies of β-diketone and β-ketoester derivatives of zirconium diisopropoxide bis (tetraisopropoxyaluminate)

Abstract

Synthesis of β-diketone and β-ketoester derivatives of zirconium diisopropoxide bis(tetraisopropoxy- aluminate), of the type, ZrAl₂(OPrⁱ)_10-x L_x (where L = acetylacetone, benzoylacetone, dibenzoylmethane, methylacetoacetate or ethylacetoacetate; x = 1, 2, 4 or 6) have been reported. Structural aspects of these derivatives have been discussed on the basis of elemental analyses, molecular weight determinations and IR, NMR (¹H, ¹³C and ²⁷Al) spectral studies. NMR spectral data demonstrate that these compounds exist in non-aqueous solution as geometrical isomers, having isopropoxy groups in both the cis and trans positions.