Abstract
New azine ligand H2L was synthesized by condensation of 4,6-diacetylresorcinol dihydrazone (DARDH) and isatin (IS) with molar ratio (1:2). Reaction of the ligand with metal acetate of copper (II), cobalt (II), nickel (II) and zinc (II) in molar ratios 1:1 and/or 1:2 (L:M) produced mono and binuclear metal complexes. The structure of the prepared ligand and its complexes were proved by elemental analysis, FTIR, electronic, mass, (HNMR)-H-1 and ESR spectral analysis as well as magnetic moments and conductance measurements. The data of spectroscopic, magnetic susceptibility and conductivity proved that the H2L ligand acts as dibasic [tri, tetra and hexadentate] ligands. The coordination sites with all the metal ions are phenolic oxygen, azomethine nitrogen and isatinic oxygen. The complexes exhibited different geometrical structures such as:square planar, tetrahedral, and octahedral arrangement around the central metal ions. The ligand and some metal complexes showed anti microbiological activity.