The N-protonated nitrous oxide is about 2000 K higher in energy than the O-protonated nitrous oxide. Frequencies of the hyperfine resolved J = 1 – 0 transition were published by
(1) M. C. McCarthy, O. Martinez, Jr., K. N. Crabtree, V. Lattanzi, S. E. Novick, and S. Thorwirth,
2013, J. Phys. Chem. A 117, 9968.
Additional spectroscopic parameters were mostly derived from that work. The predictions were truncated above K_a = 0.
Predictions should be viewed with caution.
¹⁴N hyperfine splitting can be resolved at low quantum numbers. Therefore, a separate calculation with ¹⁴N hyperfine splitting is provided up to J" = 2 together with partition function values.
The ab initio dipole moment value was reported in (1). The molecules has a large b-dipole moment component (1.29 D), but transitions can not be predicted with confidence from the present data.