Studies on interaction between divalent transition metal ions and some substituted imidazolinone at 0.1M ionic strength pH metrically

R. R. Tayade, Alice. S. Chanda

Abstract

The interaction between Ni(II), Cu(II) and Zn(II) metal ions and substituted imidazolinone have been studied at 0.1 M Ionic Strength in 70 % DMF-water mixture by Bjerrum method as adopted by Calvin and Wilson. It is observed that Ni(II), Cu(II) and Zn(II) metal ions form 1:1 and 1:2 complexes with ligands (L1& L2). The data obtained were used to estimate and compare the values of proton-ligand stability constant (pK) and metal-ligand stability constants (logk). From estimated data (pK and log k), the effects of substituents were studied. Ligand used for present work were (L1) 1-[2-hydroxy-5-(phenyl azo) benzylidene amino]-2-phenyl-4-benzylidene-5-oxoimidazoline (L2)1-[2-hydroxy-5-(4-methoxy phenyl azo) benzylidene amino]-2-phenyl-4-benzylidene- 5-oxoimidazoline