Ruthenium complexes with Schiff base ligands containing benz(othiazole/imidazole) moieties: Structural, electron spin resonance and electrochemistry studies

Novel ruthenium(II/III) complexes of Schiff bases containing benzimidazole (bz) or benzothiazole (bs) moieties were isolated. For example, the cyclic voltammogram of [RuCl(bsp)2(PPh3)] (2) {Hbsp = N-(2-hydroxybenzylidene)-benzothiazole} showed two distinctive redox couples labeled A and B which were further probed via squarewave voltammetry and UV-Vis spectroelectrochemistry.