Transition frequencies were taken from
(1) J. J. Harrison, J. M. Brown, D. T. Halfen, and L. M. Ziurys, 2006, Astrophys. J. 637, 1143;
and from
(2) D. T. Halfen and L. M. Ziurys, 2016, Astrophys. J. 833, Art. No. 89.
Some parameters were kept fixed to values from (1). The partition function takes into account vibrational corrections approxomately. The calculations should be viewed with some caution, especially for frequencies with calculated uncertainties exceeding 0.2 MHz.
The dipole moment was determined for CrD by
(3) J. Chen, T. C. Steimle, and A. J. Merer, 2007, J. Chem. Phys. 127, Art. No. 204307.