N2-Broadening Coefficients in the ν1 Band of 35Cl12C14N

Abstract

N2-broadening coefficients have been measured for 30 lines of cyanogen chloride (35Cl12C14N) at room temperature in the P and R branches of the ν1 band, using a tunable diode–laser spectrometer. These lines, with J values ranging from 0 to 55, are located in the spectral range 694–736 cm−1. The collisional widths are obtained by fitting the spectral lines with a Voigt and a Rautian profile. The broadenings coefficients of 35ClCN–N2 have also been calculated from a semiclassical theory involving the atom–atom Lennard–Jones model for the intermolecular potential in addition to electrostatic interaction.