Do Vibrational Excitations of CHD3 Preferentially Promote Reactivity Toward the Chlorine Atom

摘要: The influence of vibrational excitation on chemical reaction dynamics is well understood in triatomic reactions, but the multiple modes larger systems complicate efforts toward validation a predictive framework. Although recent experiments support selective enhancements reactivities, such studies generally do not properly account for differing amounts total energy deposited by different modes. By precise tuning translational energies, we measured relative efficiencies vibration and translation promoting gas-phase CHD3 with Cl atom to form HCl CD3. Unexpectedly, observed that C–H stretch no more effective than an equivalent amount raising overall efficiency; CD3 bend only slightly effective. However, does have strong impact product state angular distributions, stretch-excited reactants leading predominantly forward-scattered, vibrationally excited HCl.