Synthesis and Characterization of Cu(II), Co(II), Ni(II), and Zn(II) Complexes of a Schiff Base Derived from 1‐Amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐one and 3‐Hydroxysalicylaldehyde

Cu(II), Co(II), Ni(II) and Zn(II) metal complexes of a new heterocylic Schiff base derived from 1‐amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐one with 3‐hydroxy‐salicylaldehyde have been synthesized and characterized on the basis of elemental analyses, electronic, IR and 1H NMR spectra, molar conductivity measurements, magnetic moment measurements and thermogravimetric analyses (TGA). It has been found that the Schiff base behaves as a neutral bidentate (NO) or tridentate (ONO) ligand forming chelates with 1:2 (metal:ligand) stoichiometry and octahedral geometry. The conductivity data for the Ni(II) complex is consistent with that expected for a weak electrolyte.