Reversal electron current against the proton motion

4 Reversal electron current against the proton motion 

As for the electron flux on the molecular plane (ct-Aux) for the waterbridging system, it is clearly observed in Fig. 7.12 that the electron flux induced by the nuclear dynamics is flowing in the direction opposite to the proton motion as though they are compensating the electrons carried by the nucleus proton. In particular, panel (b) of Fig. 7.12 seems to have a collective electron flow passing through the mediating water molecule. This is the first observation of the electronic backward flux associated with proton transfer. 

5 Rearrangement of n-bonds Dynamical manifestation of the Pauling resonance structures 

An electronic state of the zwitter ionic form left behind right after the proton transfer, which should be represented in terms of the left-hand-side structure of Fig. 7.13 in the Pauling resonance (valence bond) theory. On the other hand, the corresponding hydrogen-atom migration should 

---