Extensive mmw and sub-mmW data were published by
(1) Y. Motoki, Y. Tsunoda, H. Ozeki, and K. Kobayashi, 2013, Astrophys. J. Suppl. Ser., 209, Art. No. 23.
Additional transition frequencies were taken from
(2) H. M. Pickett 1973, J. Mol. Spectrosc., 46, 335.
Data from
(3) J. N. MacDonald and J. K. Tyler, 1972, J. Chem. Soc. Chem. Comm., 995
were omitted because of large uncertainties. One fairly obvious typographical error in (2) was corrected.
Should the molecule be detectable in space, the predictions are probably sufficient for astronomical purposes. Predictions with uncertainties larger than 300 kHz should be viewed with some caution.
The dipole moment components were assumed to agree with those of the main species, see e056507.cat.