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Synthesis, Characterization and Antimicrobial Studies on some Complexes of Tellurium (IV) with Schiff Base Derived from Isatin and 2-Aminophenol

Gobind Goyat, Anju Malik, Sapana Garg and K. K. Verma

Eight new tellurium(IV) chelates with a tridentate Schiff base formed by condensation of isatin with 2-aminophenol having formulae TeCl3(HIAP), Te(IAP)2, RTeCl2(HIAP) and R2TeCl(HIAP); where R = p-methoxy-, p-hydroxy- and 3-methyl-4-hydroxyphenyl and H2IAP = Schiff base, have been synthesized and characterized via elemental analyses, conductance measurement, infrared and proton magnetic resonance spectral studies. The data predict that Schiff base acts as a monobasic tridentate (ONO) ligand in TeCl3(HIAP), RTeCl2(HIAP), R2TeCl(HIAP) and as a dibasic tridentate (ONO) ligand in Te(IAP)2. Some of these complexes have also been observed to possess antifungal and antitubercular activity.