Abstract

The infrared spectra of trifluoroamine oxide and its ¹⁵N analogue have been measured from 4000 to 260 cm⁻¹. Fundamental frequency assignments (based upon <i>C_3v</i> symmetry) made from the ¹⁴N spectrum are: <i>v</i>₁(<i>a</i>₁) = 1689, <i>v</i>₂(<i>a</i>₁)= 740, <i>v</i>₃ (<i>a</i>₁) = 528, <i>v</i>₄(<i>e</i>) = 880, and <i>v</i>₆(<i>e</i>) = 398 cm⁻¹. Normal coordinate calculations support the assignment of the remaining fundamental <i>v</i>₅(<i>e</i>) to a band system appearing as a shoulder, about 558 cm⁻¹, on the intense <i>v</i>₃(<i>a</i>₁) fundamental.

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