Aluminium (III) Derivatives of Schiff bases Derived from o-Hydroxyacetophenone and Hydroxyalkylamines

Abstract

The 1 : 1 and 2 : 3 interactions of aluminium isopropoxide with bifunctional tridentate Schiff bases, derived by the condensation of o-hydroxyacetophenone with hydroxyalkylamines [such as 2-hydroxyethylamine, 2-hydroxy-1-propylamine, 1-hydroxy-2-methyl-2-propylamine and 1-hydroxy-2-butylamine] have been investigated. The resulting derivatives of the types, Al(OPrt)(SB) and Al 2 (SB) 3 (where SB 2 - is the anion of the corresponding Schiff base, SBH 2 ) have been isolated in almost quantitative yields. The ebullioscopic determination of molecular weights in benzene has shown the isopropoxy derivatives to be dimers, whereas the dialuminium-tris-Schiff base derivatives to be monomers. The infrared spectra of these compounds have been recorded and plausible structures indicated.