Abstract

we used an argon ion laser at 514 nm (Spectra Physics, model 2017). The interference filter was used to purify the laser line by removing additional natural emission lines which interfere with the Raman lines. The IR spectra of phenylacetylene were measured with Specord M80 (Carl Zeiss, Jena) as a function of methylcyclohexane concentration. The spectral width of the monochromator was 1 cm -1 for both Raman and IR spectroscopy. Spectrograde phenylacetylene, methylcyclohexane, and acetonitrile (Aldrich) were used without further purification. A polarization analyzer and scrambler were used to select and record polarized (VV) and depolarized (VH) components of the scattered light. The isotropic Raman spectra were calculated according to the relation

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