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Synthesis and Characterization of N, N' - Bis(Benzoin)-o- phenylenediiminato Zinc (II) Complex

N, N' - bis(Benzoin)-o-phenylenediimine was synthesized by the treatment of methanolic solution of benzoin with methanolic solution of o-phenylenediimine. Interaction of the ethanolic solution of the Schiff base with the ethanolic solution of zinc (II) chloride yielded the complex compound, N, N' - bis(Benzoin)-o-phenylenediiminato zinc (II). The zinc (II) complex was characterized by infrared spectral studies, potentiometry and conductivity. The complex compound is soluble in acetone but slightly soluble in most organic solvent such as methanol, ethanol nitromethane, chloroform, benzene etc. The complex decomposes at 139 o C, indicating that the complex compound is very stability. The potentiometric analysis of the zinc (II) Schiff base complex revealed 1:1 metal to ligand ratio, which corresponds to a four coordinate complex.