New ruthenium polypyridyl complexes as potential sensors of acetonitrile and catalysts for water oxidation.

New ruthenium(ii) polypyridyl complexes of formulae [RuCl(MeNtrpy)(bpy-OMe)]Cl, 1, and [Ru(MeNtrpy)(bpy-OMe)(OH)](CFSO), 2, with MeNtrpy = 4'-,-dimethylamino-2,2':6',2''-terpyridine and bpy-OMe = 4,4'-dimethoxy-2,2'-bipyridine, were synthetized and characterized by spectroscopic and electrochemical techniques. Besides, [Ru(MeNtrpy)(bpy-OMe)(NCCH)], 3, was obtained and characterized by UV-vis spectroscopy in acetonitrile solution. All experimental results were complemented with DFT and TD-DFT calculations.