Benzotriazole as a structural component in chelating and bridging heterocyclic ligands; ruthenium, palladium, copper and silver complexes

The coordination chemistry of five N,N-bidentate ligands that contain a 1-substituted benzotriazole subunit has been studied. Spectroscopic and electrochemical studies of their chelated ruthenium bis(2,2-bipyridine) complexes have shown that the benzotriazole group is a relatively electron rich component. X-Ray crystal structures are reported for one-dimensional polymeric copper and silver complexes of di(benzotriazol-1-yl) methane, mononuclear and dinuclear copper and silver complexes of 1-(2-pyridyl)benzotriazole (in which the ligand displays chelating, monodentate and bridging modes of coordination, respectively), bridged binuclear palladium, copper and silver complexes of 1-(2-pyridylmethyl) benzotriazole and a tetranuclear copper complex of 1-(1-isoquinolyl)benzotriazole.