VIBRATIONAL-SPECTRA OF NITROBENZENE-DO, NITROBENZENE-P-D AND NITROBENZENE-D5 AND NORMAL VIBRATIONS OF NITROBENZENE

Infrared and Raman spectra of nitrobenzene-p-d and -d5 have been recorded in the liquid state and sixty-seven of the seventy-two fundamental frequencies of the two isotopes have been assigned by referring to the isotopic frequency shifts, the Raman depolarization ratios and the assignments of sodium benzoate-p-d and -d5. A normal coordinate analysis has been carried out for the five isotopic nitrobenzenes, -d0, -p-d, -d5, -18O2 and -15N. The force constants have been refined by the method of least squares and a good fit between the observed and the calculated frequencies has been obtained. © 1979.