Spectral and thermal studies of copper [II] and nickel [II] complexes of ethyl cyano [pyridyl hydrazone] acetate

Complexes of copper and nickel with ethyl cyano [pyridyl hydrazono] acetate [EC-3-PyHA and EC-4-PyHA] were synthesized and characterized. Results showed that the Cu [II] complexes are octahedral but the Ni [II] complexes are octahedral and square planar. DTA results indicated greater thermal stability for Ni [EC-3-PyHA]2 than for Cu [EC-3-PyHA]2