preparation and characterization of complexes of vo co ni cu zn cd ions with the new ligand dipheny n.n-bis 2-hydroxybenzohydrazide ethan 1-2 diimine

preparation and characterization of complexes of vo co ni cu zn cd ions with the new ligand dipheny n.n-bis 2-hydroxybenzohydrazide ethan 1-2 diimine