Tags: Chemical Compound, Chemical Substance.
44′-Bipyridine (44′-bipy) is a bipyridine which is mainly used as a precursor to NN’-dimethyl-44′-bipyridinium [(C5H4NCH3)2]2+ known as paraquat. This species is electroactive and its toxicity arises from the ability of this dication to interrupt biological electron transfer. Because of its structure 44′-bipyridine can bridge between metal centres to give coordination polymers. 44′-bpy can also mediate electronic effects between two paramagnetic metal centers.