Study of the and ν2 + 2ν3 infrared bands of methyl chloride

Abstract

The [Formula: see text] and ν2 + 2ν3 combination bands have been identified, their band centres lying around 2751 and 2796 cm−1 respectively. Their lines are mixed with those of the strong ν2 + ν5 band. For the [Formula: see text] unperturbed band, in the case of the CH335Cl isotopic species, a standard deviation of 0.007 cm−1 has been obtained over 355 lines. For the ν2 + 2ν3 band, coupled to 2ν3 + ν5 by a Coriolis resonance, a standard deviation of 0.008 cm−1 has been obtained over 237 lines of the CH335Cl isotopic species.