Long-Range Correlation of Intra-Molecular and Inter-Molecular Vibration in Liquid CCl4
Journal of Chemical Physics
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© 2021 Author(s). Experiments measuring the polarization dependence of hyper-Raman light scattering reveal long-range correlation of molecular vibrations in liquid CCl4. The ν3 and ν1 + ν4 intra-molecular vibrations at about 770 cm-1 are strongly polarized transverse to the scattering wavevector. Weaker transverse polarization is exhibited by the ν1, ν2, and ν4 intra-molecular vibrations and by the inter-molecular collision-induced band around 0 cm-1. The observed polarization dependence is due to the correlation of the vibrations on molecules separated by about 200 nm. The strength of the observed correlation increases with the transition dipole moment for the vibration mode and is consistent with dipole-dipole coupling.
Biological and Chemical Physics | Physical Chemistry
Long-Range Correlation of Intra-Molecular and Inter-Molecular Vibration in Liquid CCl4.
Journal of Chemical Physics, 154(3),