Dipole moment surfaces and the mid- and far-IR spectra of N2-Ar

An improved theoretical long-range dispersion plus induction dipole moment surface was observed for N2-Ar. Predictions of this dispersion were tested against far-infrared (IR) and mid-IR experimental spectra using two previously-reported potential energy surfaces: MMSVmod and XC-3 potential energy surfaces. The persistence of the difference in the quality for spectra determined by both potentials when more accurate dipole moment surface is employed was determined.