Copper(II), Nickel(II) and Cobalt(II) Complexes of 2-(Phenylazo)- 2-cyanoethylethanoate

Department of Chemistry, University of Calicut, Kerala-619 635

Manuscript received 24 September 1987, accepted 13 January 1988

COUPLING of diazonium salts with \(\beta\)-ketonitriles have been studied extensively because the products have found use as yellow dyes and pigments^1-3. Transition metal complexes of these azo dyes are reported to have excellent fastness properties¹. However, there appears no systematic investigation on the structural aspects of these azo compounds and their metal complexes. The present communication reports the syntheses and characterisation of 2-(phenylazo)- 2- cyanoethylethanoate (phenylazoethylcyanoacetate) and its copper(II), nickel(II) and cobalt(II) complexes.