Raman Spectra of Benzene and Diphenyl

Raman spectrum of benzene.---By employing suitable filters with both mercury-arc and helium-arc excitation a number of new lines have been recorded. The complete spectrum given in frequency differences, Δν, is as follows: Δν=606, 849, 992, 1178, 1584, 1603, 2460, 2542, 2597, 2617, 2784, 2928, 2947, 3046, 3060, 3164. Anti-Stokes lines corresponding to Δν values 606, 849, 992 are verified.Raman spectrum of diphenyl.---With mercury arc excitation and quinine sulphate filter fair spectra were obtained though the continuous background due to fluorescence was troublesome. The spectrum consisted of five faint diffuse lines and seven strong lines. Their Δν values are: 416, 606, 731, 766, 810 (these are very faint) and 990, 1023, 1280, 1544, 1584, 1603, 3055, 3170. It will be noted that six of the lines are found in the spectrum of benzene.