Frequencies of N 2 O in the 1100- to 1440-cm −1 region

摘要: The infrared spectrum of N2O in the region between 1100 and 1440 cm−1 has been studied at 0.005-cm−1 resolution with a Fourier-transform spectrometer. Measurements were made line positions species 14N216O, 14N15N16O, 15N14N16O, 14N218O, 14N217O, 15N216O for several ground-state hot bands. observed frequencies analyzed to obtain values band centers upper- lower-state rotational constants. from other studies covering pure ν2 used some analyses. Results least-squares fits 0200–0000, 0310–0110, 0400–0200, 0420(e)–0220(e) bands 14N16O2 molecule indicate that high J levels upper states those are perturbed, mainly because vibration–rotation interaction (l-type resonance) respective close-lying same vibrational type Δl = ±2.