Synthetic, spectroscopic and biocidal aspects of sixteen to twenty two-membered tetraazamacrocyclic complexes of tin(II)

2536-2539The template condensation of malonic, succinic, glutaric, adipic or phthalic acid with 1,3-phenylenediamine in the presence of tin (II) chloride resulted in the isolation of macrocyclic complexes of the type [Sn (N4macn)Cl2]. These complexes have been characterized by chemical analysis, IR, 1H NMR and 119Sn NMR spectral studies, X-ray powder diffraction, molecular weight determinations and conductivity measurements. An octahedral geometry around the tin atom is suggested for [Sn (N4macn)Cl2] complexes. The biological activities of all the complexes have been studied by screening them against organisms E. coli, S. aureus, F. oxysporum and A. alternata and the results have been compared