The experimental frequencies have been taken from
(1) A. Bouchez, L. Margulès, R. A. Motyenko, J.-C. Guillemin, A. Walters, S. Bottinelli, C. Ceccarelli, and C. Kahane, 2012, Astron. Astrophys. 540, Art. No. A51.
The predictions are deemed to be accurate and reliable throughout. Predictions with uncertainties larger than 300 kHz should be viewed with caution.
Estimated factors for the vibrational contributions to the partition function will be provided.
The dipole moment was assumed to agree with that of the main species, see c060501.cat.