Probes simple diatomic molecules

Unlike the case of simple diatomic molecules, the reaction coordinate in polyatomic molecules does not simply correspond to the change of a particular chemical bond. Therefore, it is not yet clear for polyatomic molecules how the observed wavepacket motion is related to the reaction coordinate. Study of such a coherent vibration in ultrafast reacting system is expected to give us a clue to reveal its significance in chemical reactions. In this study, we employed two-color pump-probe spectroscopy with ultrashort pulses in the 10-fs regime, and investigated the coherent nuclear motion of solution-phase molecules that undergo photodissociation and intramolecular proton transfer in the excited state. 

Thus, in many respects these simple diatomic molecules are suitable probes for zeolite research via IR spectroscopy [605]. In a similar sense, this also holds for small heteronuclear molecules such as CO, N2O, CO2, CH4 (vide infra). 

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