Infrared Studies of Naphthalene and Naphthalene-d8

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.