4,4' -Bis(N,N-dimethylamino)-2,2' -bipyridine

4,4' -Bis(N,N-dimethylamino)-2,2' -bipyridine (DMAB) is a ligand that is used in electrochemical studies. It has been shown to have ancillary properties, which means that it does not interact directly with the substrate but modifies its environment. DMAB can form a complex with the proton at the electrode surface and x-ray crystal structures have been obtained for this interaction. These structures demonstrate that DMAB binds to the tetrazole ring of pyridine and stabilizes the molecule by increasing its redox potentials.