Films of poly{pyrrole-[Ru II (bpy) 2 Cl 2 ]}; their transformations into films containing cis- or trans-[Ru II (bpy) 2 (H 2 O) 2 ] 2+ , [Ru II (bpy) 2 (MeCN) 2 ] 2+ and [{Ru III (bpy) 2 (H 2 O)} 2 O] 4+ complexes, application to electrocatalysis (bpy = 2,2′-bipyridine)

A ruthenium(II) bis(chloro) complex containing two 2,2′-bipyridine (bpy) ligands substituted with pyrrole groups has been synthesized and anodically electropolymerized on platinum, glassy carbon or SnO2 electrodes; [RuII(bpy)2Cl2] sites in the polymer are readily converted into other ruthenium complexes as cis- or trans-[Ru(bpy)2(H2O)2]2+, [{Ru(bpy)2(H2O)}2O]4+ and [Ru(bpy)2(MeCN)2]2+ and the capability of the polypyrrole cis-[Ru(bpy)2(H2O)2]2+ films to act as an electrocatalyst has been tested.