The experimental lines are from
(1) S. Yamamoto and S. Saito,
1994, Can. J. Phys. 72, 954,
and from
(2) M. Tanimoto, T. Klaus, H. S. P. Müller, and
G. Winnewisser,
2000, J. Mol. Spectrosc. 199, 73.
The sextic distortion term HK was
estimated from the main species.
The 2H hyperfine splitting is negligible
throughout.
Predictions of a-type transitions with predicted
uncertainties larger than 0.3 MHz or b-type
transitions with Ka >
3 2 should be viewed with caution.
The dipole moment is from an ab initio calculation
from
(3) K. A. Peterson, A. Mitrushchenkov, and J. S. Francisco,
2008, Chem. Phys. 346, 34.
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