Metal complexes of 1,6-bis(1-benzimidazolyl) hexane: synthesis, characterization and biological activity against some soil-borne fungi

Abstract

Metal complexes Mn(II), Co(II), Cu(II), Zn(II) and Ag(I) of the ligand 1,6-bis(1-benzimidazolyl)hexane were synthesized by the reaction of the ligand and appropriate metal salts in l: 1 mole ratio. The ligand and its complexes were characterized using IR, Uv-Vis, 1H and 13C NMR, Mass spectroscopy, and elemental analysis CHN. Depending on the abovementioned techniques, a polymeric structure was proposed to the prepared complexes. Further, all the synthesized compounds were tested against some of the soil-borne fungi namely; Rhizoctonia solani, Fusarium oxysporum, Fusarium solani and Pythium aphanidermatum. The results showed that the tested compounds have an effect on the growth of pathogenic fungi. This leads to thinking that these compounds could be used one day as new chemical pesticides as an alternative to chemical compounds that have been shown to be resistant to pathogens.