Abstract
Malonaldehyde and its derivatives with an intramolecular hydrogen bond are very interesting molecules theoretically and experimentally to investigate the proton tunneling in polyatomic systems. In this study, we applied the stimulated Raman adiabatic passage method to realize efficiently the laser induced proton transfer of 1-methylmalonaldehyde, where a two-dimensional (2D) model potential is used to describe the proton motion. Namely, we performed the 2D simulations taking into account not only the reaction coordinate of proton motion, but also the O–O stretching mode, and analyzed an important role of a heavy atom mode in the proton motion of hydrogen bond in detail.
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