An instrument for the direct photoelectric recording of Raman spectra of liquids is described together with the results obtained for CCl4, CHCl3, CH2Cl2, and C6H6. The precision of the results was tested by eight recorded spectrograms of CHCl3. The intensity ratios of anti-Stokes to Stokes lines were found to be in good agreement with theoretical values. Approximate values of the change of the bond polarizability of the C–Cl bond in CCl4 and the C–H bond in C6H6 caused by valence vibrations are calculated from the intensity data.
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Chien et al. (1947) studied this question.
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