The infrared spectra of trifluoroamine oxide and its 15N analogue have been measured from 4000 to 260 cm−1. Fundamental frequency assignments (based upon C3v symmetry) made from the 14N spectrum are: v1(a1) = 1689, v2(a1)= 740, v3 (a1) = 528, v4(e) = 880, and v6(e) = 398 cm−1. Normal coordinate calculations support the assignment of the remaining fundamental v5(e) to a band system appearing as a shoulder, about 558 cm−1, on the intense v3(a1) fundamental.
R. P. Hirschmann, D. F. Harnish, J. R. Holmes, J. S. MacKenzie, and W. B. Fox, "The Chemistry of Trifluoroamine Oxide. IV. The Infrared Spectra of F314NO AND F315NO," Appl. Spectrosc. 23, 333-336 (1969)