In this work, the ligands vinyl imidazole (VIm) complexes of Ruthenium(Ru) were taken and one electron redox potentials were analysed. The structures and the influence of ligand in these ruthenium complexes on the one electron transfer mechanism were investigated. Ligand charge transfer towards the Ru metal has been found prominent in these Ru-ligand complexes forming a strong coordinated bond. The one electron transfer processes of these complexes depend on the number of VIm ligands present in these complexes.