Preparation, characterization and microbiological studies of Cr+3, Mn+2, Co+2, Ni+2, Cu+2, Zn+2 and Cd+2 chelates of schiffs base derived from vanillin and anthranilic acid

New chelates of schiffs base derived from vanillin and anthranilic acid with d-block elements such as Cr+3, Mn+2, Co+2, Ni+2, Cu+2, Zn+2 and Cd+2 have been synthesized and investigated. Their structures were determined on the basis of the elemental analysis, infrared spectroscopy, electronic spectroscopy, thermo gravimetric analyses and electron spin resonance spectroscopy. Molar conductivity measured revealed the 1:1 electrolytic nature for Cr+3 complexes and non electrolytic for Mn+2, Co+2, Ni+2, Cu+2, Zn+2 and Cd+2. On the basis of the studies, the coordination sites were proven to come through the nitrogen atom of azomethine and the hydroxyl group of the carboxyl group of anthranilic acid.   Key words: Metal complexes, anthranilic acid, vanillin, chelates.