High-Resolution Fourier Transform Infrared Spectroscopy of Nitrosyl Fluoride.

The high-resolution FTIR spectrum of FNO has been recorded and the rovibrational structure of the essentially unperturbed nu3, 2nu3, and nu1 + nu3 cold bands and the 2nu3 <-- nu3, nu2 + nu3 <-- nu3, and nu1 + nu2 + nu3 <-- nu3 hot bands has been analyzed. The perturbed bands nu1 and nu1 + nu2 have been assigned and the data analyzed by fitting the transitions with the dark states nu2 + 2nu3 and 2nu2 + 2nu3. Parameters for both light and dark states together with Coriolis coupling parameters have been determined. Copyright 1998 Academic Press. Copyright 1998Academic Press