SYNTHESIS, CHARACTERIZATION, THERMAL, X-RAY AND ANTIMICROBIAL STUDY OF ZN (II) METAL COMPLEXES OF DEHYDROACETIC ACID BASED NEW SCHIFF BASES

Abstract

Tetradentate complexes of Zn (II) of Schiff bases derived from DHA, o-phenylenediamine, 4- N, N, Diethyl amino
Salicylaldehyde (L1) and Dehydroacetic Acid (DHA), 4-methyl-o-phenylenediamine, 5-bromo Salicylaldehyde (L2) have
been synthesized and characterized by elemental analysis, magnetic susceptibility, thermal analysis, X-ray diffraction, 1HNMR, Mass, IR,UV visible spectra and conductometry. The ligand field parameters have been characterized and found to
have octahedral geometry. Thermal behavior (TG/DSC) of the complexes was studied. X-Ray diffraction study reveals
monoclinic crystal system. The ligand and its complexes were subjected for antibacterial activity against Escherichia coli
and Staphylococcus aureus and fungicidal activity against Trichoderma and Aspergillus Niger.