SYNTHESIS AND SPECTROSCOPY STUDIES OF SOME TRIVALENT METAL IONS COMPLEXES WITH A NEW MACROCYLIC TRIDENTATE LIGAND ETHYL 2-{[(1E, 2E) - 2- (HYDROXYIMINO) -1- PHENYL ETHYLIDENE] AMINO} - 4,5,6,7 TETRAHYDRO-1-BENZOTHIOPHENE-3-CARBOXYLATE AND THEIR ANTIMICROB

Abstract

Complexes of general formula [M(L)Cl₂(H₂O)] where M= chromium(III), iron(III)  and ruthenium(III), L=ethyl 2-{[(1E,2E)-2-(hydroxyimino)-1-phenyl  ethylidene] amino}-4,5,6,7 tetrahydro-1-benzothiophene-3-carboxylate have been prepared. Complexes were characterized by analytical analysis and physical-chemical methods. The ligand behaves as a tridentate chelating agent and bonded to the metal ion through azomethine nitrogen, ester carbonyl   and oximino   oxygen atom. Electronic spectra and magnetic susceptibility measurement reveals octahedral geometry. The complexes are found to be non-electrolytic in nature on the basis of low molar conductance. The Ru (III) metal complex exhibited antibacterial activity against drug resistant gram negative uropathogens and antifungal activity.