Aluminium(III) Derivatives of Monofunctional Bidentate Schiff Bases

Abstract

Reactions of aluminium iso-propoxide with monofunctional bidentate Schiff bases having the general formula 2-HOC 10 H 6 CH:NR (where R = C 2 H 5 , n C 3 H 7 , iso-C 3 H 7 , n-C 4 H 9 , iso-C 4 H 9 , sec-C 4 H 9 , tert-C 4 H 9 and C 6 H 5 ) in different stoichiometric ratios have yielded Al(OPri) 2 (SB), Al(OPr i )(SB) 2 and Al(SB) 3 type of products (where SB is the anion of the corresponding Schiff base, SBH). The ebullioscopic determination of molecular weights shows that the di-iso-propoxy mono- Schiff base derivatives are dimeric; the tris- Schiff base derivatives are monomeric and for the mono-iso-propoxy bis- Schiff base derivatives, molecular association is ~1.4. The IR spectra of a few representative derivatives have been recorded and possible structures indicated.