Abstract

SYNTHESIS AND STRUCTURAL PROPERTIES OF MIXED LIGAND METAL COMPLEXES OF TRANSITION METALS WITH AZO DERIVATIVES OF COUMARIN-3-CARBOXYLIC ACID AND PHENANTHROLINE

Satyabhama Vishwakarma* and Ratnamala P. Sonawane

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Abstract

This research article consists of synthesis of mixed ligand metal complexes of azo derivatives of coumarin-3-carboxylic acid and phenanthroline. The transitions metals like Cobalt, Nickel, Copper and Zinc and Silver, these metals are having biological importance and have good tendency to form coordinate bond with ligand. The mixed ligand with transition metals which are then characterized using techniques, FTIR, UV-Visible, elemental analysis, XRD, conductivity measurements, TGA analysis. The synthesized ligand azo derivatives of coumarin-3-carboxylic acid acts as a bidentate ligand and coordinated through carboxylic acid oxygen and carbonyl oxygen from coumarin ring and phenanthroline is also a bidentate ligand and coordinated through both the nitrogen to the transition metal forming a hexadentate complex with 2 water molecules coordinated.

Keywords: Azo-coumarin derivatives, Mixed-ligand complexes, Phenanthroline, Coumarin-3-carboxylic acid, azo derivatives.