Infrared Studies of Naphthalene and Naphthalene-d8

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Abstract
Infrared spectroscopic studies of naphthalene and naphthalene‐d8 are reported as follows: (a) far infrared studies of solid C10H8 in the region 450 to 130 cm—1, (b) studies of single crystals of C10H8 with polarized light in the spectral region 3500—450 cm—1 for the ab and bc planes at normal incidence, (c) study of gaseous C10H8 in the spectral region 1350—440 cm—1, (d) studies of single crystals of C10D8 with polarized light in the spectral region 3400—500 cm—1 for the ab plane at normal incidence, (e) study of a gaseous C10D8 in the spectral region 1000—700 cm—1. Most likely symmetry assignments for the absorptions of C10H8 and C10D8 are given and some of the bands of C10D8 are correlated with those of C10H8.