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The double proton transfer (PT) reaction has been investigated in the [2,2′‐bipyridyl]‐3‐3′‐diol, a complex molecule where the proton movements is coupled to significant rearrangement of the electronic structure. Moreover, the reaction could be concerted, that is the two protons are exchanged simultaneously, or stepwise, where the two protons are transferred sequentially. To this end, a static exploration...