Spectral studies of 5-({4-amino-2-[(Z)-(2-hydroxybenzylidene) amino] pyrimidin-5-yl} methyl)-2, 3, 4-trimethoxybenzene with some transition metal ions.

Abstract

Some transition metal ions Complexes with 5-({4-amino-2-((Z)-(2-hydroxybenzylidene) amino) pyrimidin-5-yl} methyl)-2,3,4-trimethoxybenzene were prepared and characterized by elemental analyses, Infrared , magnetic moment, electronic spectra , mass spectra, X-ray powder diffraction, molar conductance and thermal analysis (TGA). The complexes have general formulae (ML2.2H2O) {where M = Mn (II), Co (II), Ni (II), Cu (II), Zn (II), Pd (II) and Pt (II). The coordination behavior of the metal ions towards to the investigated Schiff base takes place through -C=N,-NH2 and -OH groups. The obtained C, H and N elemental analysis data showed the Metal: Ligand ratio is 1:2 (M: L) ratio. The molar conductance data reveal that all the metal complexes are non-electrolytic in nature. From the magnetic moments the complexes are paramagnetic except Zn metal ion complexes have octahedral geometry with coordination number eight. The thermal behavior of these complexes shows that, the hydrated complexes have loses two water molecules and immediately followed by decomposition of the anions and ligand molecules in the second and third stage. The Schiff bases and metal complexes show good activity against some bacteria. The antimicrobial results indicate that, the metal complexes have better antimicrobial activity as compared to the prepared Schiff base.