Abstract

Several newSchiff base derivatives of aluminium have been synthesized by the reaction of aluminium isopropoxide with theSchiff bases having the donor system, O−N−O. The reactions in 1∶1 and 2∶3 molar ratios [Al(OPri)3:Schiff base] have yielded Al(OPri)(SB) and Al2(SB)3 types of products [where SB−- represents the anion of theSchiff base andSBH2= (2-hydroxy-1-naphthylidene)-2-hydroxyethylamine, (2-hydroxy-1-naphthylidene)-3-hydroxy-1-propylamine, (2-hydroxy-1-naphthylidene)-1-hydroxy-sec.-butylamine and (o-hydroxyacetophenone)-3-hydroxy-1-propylimine, resp. In these resulting monoisopropoxy aluminiumSchiff base and dialuminium tris-Schiff base derivatives, the central aluminium atom appears to be penta-and tetracoordinated, resp., as indicated by their dimeric and monomeric states determined ebullioscopically. The infrared spectra of the resulting derivatives have also been recorded and tentative assignments have been made.

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