A new Schiff base ligand. Has been synthesized from the reaction with Co (ll), Ni(II) and Cu(II) salts to form complexes. The ligand and the complexes have been characterized by FTIR. 1H NMR (DMSO-d6.). UV-vis, elemental analysis, mass Spectra (LC-MS) and magnetic measurements. The metal to the ligand ratio of the Co (II), Ni (II) and Cu (II) complexes have been found to be 1:2. Protonation constants of the ligand and overall formation constants of the complexes have been calculated from potentiometric data using the computer program TITFIT.