Synthesis of Imine-Naphthol Tripodal Ligand and Study of Its Coordination Behaviour towards Fe(III), Al(III), and Cr(III) Metal Ions

Figure 4

Potentiometric titration curves: (I)  M trenhynaph (L),  M [trenhynaph][M(III)] (1 : 1 molar ratio) [(II)-Al, (III)-Cr, (IV)-Fe], , 0.1 M KCl, and “” is the moles of base added per mole of ligand/complex.