The Raman Spectra of Certain Organic Liquids

The Raman spectra of nineteen organic compounds chosen from different chemical series have been measured. Frequency shifts are given and a relationship is shown between certain frequency shifts and molecular structure. In particular the frequency shift Δν=1024 cm^-1 recurs with the C --- C structure, likewise Δν=1613 cm^-1 is associated with C = C, Δν=1446 cm^-1 with H|-C-|H, Δν=2929 cm^-1 with H|H-C-C|H and Δν=3054 cm^-1 with H-?. It is suggested that anti-Stokes lines may have slightly greater frequency shifts than the corresponding Stokes lines. A comparison between Raman frequency shifts and infrared absorption data is made.