VIBRATIONAL SPECTRA OF NAPHTHALENE-d0, -α-d4, AND -d8 MOLECULES

Abstract

The infrared and Raman spectra of the naphthalene-α-d4 molecule have been obtained. The spectra of the d0 molecule have also been repeated and for the most part previous measurements have been confirmed. Together with the literature data for the naphthalene-d8 molecule, a complete assignment has been presented for all three molecules. It is recognized that the assignment is not definitive, although satisfactory agreement with the requirements of the band polarizations and contours, as well as product and sum rules, has been obtained. The calculated and observed values for the heat capacity and entropy are also in good agreement.