Infrared Spectrum, Structure, and Thermodynamic Properties of Trifluoramine Oxide, NF3O

The infrared spectrum of NF3O is reported. The general appearance of the spectrum establishes that the molecules has C3v symmetry. The bands at 1691, 743, 528, 883, 558, and 400 cm−1 are assigned as the fundamental frequencies. The rotational spacing of ν2 was used to determine the rotational constant, B=0.19 cm−1. Assuming tetrahedral angles and r(NO) = 1.15 Å with this rotational constant gives an estimate of r(NF) = 1.48 Å.