NO+, v = 0, 1
Nitrosylium, X 1Σ+, v = 0, 1
Species tag 030512
Version2*
Date of EntryJan. 2017
ContributorH. S. P. Müller

The two rotational transitions were reported in
(1) W. C. Bowman, E. Herbst, and F. C. De Lucia, 1982, J. Chem. Phys. 77, 4261.
Infrared transition frequencies from
(2) W. C. Ho, I. Ozier, D. T. Cramb, and M. C. L. Gerry, 1991, J. Mol. Spectrosc. 149, 559;
and from
(3) M. López-Puertas, J.-M. Flaud, J. Peralta-Calvillo, B. Funke, and S. Gil-López, 2006, J. Mol. Spectrosc. 237, 218
were also used in the fit.
With respect to the first entry of June 2006, we have adjusted some of the uncertainties, provide predictions for v = 1, and included fairly recent submillimeter data from
(4) J. Cernicharo, S. Bailleux, E. Alekseev, A. Fuente, E. Roueff, M. Gerin, B. Tercero, S. P. Treviño-Morales, N. Marcelino, R. Bachiller, and B. Lefloch, 2014, Astrophys. J. 795, Art. No. 40.
The ab initio dipole moments were reported in
(5) R. Polák and R. Fiser, 2004, Chem. Phys. 303, 73.
The 14N hyperfine splitting may be resolvable at lower frequencies or at lower quantum numbers. Therefore, a separate calculation with hyperfine structure is available up to 480 GHz and with J" up to 3. The spin-multiplicity of the 14N nucleus was considered in the calculation of the partition function. Contributions from the first excited vibrational state to the partition function are essentially negligible at 300 K.
Ground state transition frequencies should be reliable up to at least J" = 15. Excited state transitions should be viewed with some caution.

Lines Listed64
Frequency / GHz< 5000
Max. J42
log STR0-5.0
log STR1-6.0
Isotope Corr.-0.0
Egy / cm–10.0 / 2344.0
 µa / D 
 µb / D0.368 / 0.380
 µc / D 
 A / MHz 
 B / MHz59597.15 / 59030.61
 C / MHz 
 Q(500.0)526.5853
 Q(300.0)315.8555
 Q(225.0)237.1043
 Q(150.0)158.3815
 Q(75.00)79.6848
 Q(37.50)40.3511
 Q(18.75)20.6985
 Q(9.375)10.8982
 Q(5.000)6.3736
 Q(2.725)4.1306
detected in ISM/CSMtentatively


Database maintained by Holger S. P. Müller and Sven Thorwirth, programming by D. Roth and F. Schloeder