Abstract
The i.r. spectrum of NF 3 has been measured in liquid-argon solution. Since the sample of NF 3 used for the experiments was contaminated with N 2O, it was also necessary to measure the spectrum of N 2O in liquid-argon solution so that the impurity bands could be identified unambiguously. In the observed spectrum of NF 3 it was possible to identify 29 overtone and combination bands in addition to the vibrational fundamentals. The measured wavenumbers of the NF 3 bands have been used to estimate the anharmonic coefficients x ss′, which are compared with the corresponding quantities determined from the gas-phase spectrum.
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