Vibration-rotation bands of 14N 15N 16O 15N 14N 16O: 1.6-5.7 μm region

The infrared Fourier spectrum of 63 bands of ¹⁴N ¹⁵N ¹⁶O and of 69 bands of ¹⁵N ¹⁴N ¹⁶O have been measured and analyzed from 1750 to 6000 cm ^-1. The rotational constants are given for 20 Σ, 11 Π, 7 ∆, and 3 Φ levels of ¹⁴N ¹⁵N ¹⁶O and 21 Σ, 14 Π, 8 ∆, and 5 Φ levels of ¹⁵N ¹⁴N ¹⁶O. Two bands of the previously unreported isotopic species ¹⁴N ¹⁵N ¹⁷O and ¹⁵N ¹⁴N ¹⁷O have been observed. Several local resonances are present in the levels 31 ^{1 c}0 and 04 ⁰1 in ¹⁴N ¹⁵N ¹⁶O; 10 ⁰1, 06 ⁰0, 11 ^{1 d}1, 12 ⁰1 in ¹⁵N ¹⁴N ¹⁶O. In both isotopes two "forbidden" ∆-Σ transitions are observed: 04 ^{2 c}0-00 ⁰0 and 12 ^{2 c}0-00 ⁰0.