Barrier modulation model, hydrogen

In this model the intrinsic barrier is governed by the solvent reorganisation, modulated by certain electronic structural changes, and the change in the combined zero-point energy (ZPE) of the proton and the hydrogen-bond vibrations to reach the TS in the solvent coordinate. Involvement of the proton ZPE in the intrinsic barrier is one key difference between this model and the conventional view of PT in the latter there is no such contribution because the proton coordi-... 

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