H. A. EL-Ghamry, K. Sakai, S. Masaoka, K. Y. El-Baradie and R. M. Issa
Novel Mn(II), Co(II), Ni(II), Cu(II), Pd(II) and Ru(III) complexes of Schiff bases derived from the condensation of sulfaguanidine with 3 different aldehyde have been synthesized. The structures of the prepared metal complexes are proposed based on elemental analysis, molar conductance, thermal analysis (TGA, DSC and DTG), magnetic susceptibility measurements and spectroscopic techniques (IR, UV-Vis, and ESR). To gain a better insight into the molecular structure of the metal complexes, geometric optimization has been performed using MM3 force field implemented in Sigress. The antimicrobial activity of the ligands and a number of their metal complexes against gram-positive and gram-negative bacteria has been investigated. The obtained data revealed that the metal complexes are more or less, active than the parent ligand and standard.