Dynamics of intramolecular vibrational redistribution in propargylchloride molecule studied by time-resolved Raman spectroscopy

作者: A.L. Malinovsky , Yu.S. Doljikov , A.A. Makarov , N.-D.D. Ogurok , E.A. Ryabov

DOI: 10.1016/J.CPLETT.2005.12.019

关键词:

摘要: Abstract We have studied the dynamics of intramolecular vibrational energy redistribution (IVR) from initially excited mode ν 1 (acetylene-type H–C bond) in C–CH 2 Cl molecules gaseous phase by means anti-Stokes spontaneous Raman scattering. The relaxation due to IVR was estimated occur on time-scale τ  ≈ 750 ps, which is one slowest time-scales reported so far. deactivation molecular collisions occurred with a rate constant ≈8.5 μs −1  Torr , and slower than process. A theoretical model based idea statistical nature couplings incompleteness (expressed form so-called dilution factor) proposed. provides rationalization for observed kinetics suggests that process mediated not only anharmonic but also vibrational–rotational interactions.

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