Vapor phase infrared spectrum of CF3Cl in the region 4.8–16 μm☆

Abstract The gas phase infrared spectrum of CF 3 Cl was studied at medium resolution in the range 2100-600 cm −1 . A high number of bands including fundamental, overtone, combination, and “hot” bands of the two species, CF 3 35 Cl and CF 3 37 Cl, with natural isotopic abundance, was identified. The frequency values of the two long-wavelength fundamentals, ν 3 and ν 6 , were evaluated with higher accuracy by differences of suitable combination and “hot” bands. The Q -branch rotational structure of the ν 2 + ν 5 perpendicular band for the main variety was analyzed and the molecular constants obtained are reported.