Synthetic and structural aspects of Schiff base complexes of antimony(EQ) and antimony(V) including those of organoantimony(III) and organoantimony(V) have been reviewed. The coverage of the literature is up to December 1996.

Schiff base complexes of antimony: a review

Studies on some antimony(III) complexes with tridentate schiff base ligands

Antimony(iii) complexes of bifunctional tridentate schiff bases

Several newSchiff base derivatives of antimony(III) have been synthesized by the reaction of antimony(III) isopropoxide with theSchiff bases having the donor system, O−N−O. The reactions in 1:1 and 2:3 molar ratios [Sb(O-i-C3H7)3: :Schiff base] have yielded Sb(O-i-C3H7) (SB) and Sb2 (SB)3 type of derivatives (whereSB represents the anion of theSchiff base andSBH2=o-hydroxyacetophenone-2-hydroxy-1-propylimine, o-hydroxycetophenone-3-hydroxy-1-propylimine, salicylidene-2-hydroxyethylamine, salicylidene-2-hydroxy-1-propylamine and 2-hydroxy-1-naphthylidene-2-hydroxyethylamine) resp. In the resultingSchiff base derivatives, the central antimony atom appears to be tetracoordinated as indicated by their monomeric state determined ebullioscopically. The infrared spectra of the resulting complexes have been recorded and tentative structures indicated. The thermogravimetric analysis of antimony-monoisopropoxysalicylidene-2-hydroxy-1-propylamine has also been carried out.

Om P. Singh

Papers

Antimony(III) complexes of bifunctional tridentateSchiff bases