The experimental data were taken from
(1) C. T. Scurlock, D. A. Fletcher, and T. C. Steimle,
1993, J. Mol. Spectrosc. 159, 350;
and from
(2) L. M. Ziurys, W. L. Barclay Jr., and M. A. Anderson,
1992, Astrophys. J. 384, L63.
1H hyperfine splitting may be resolved at
lower frequencies. Therefore, a separate prediction with
1H hyperfine splitting and J" ≤ 4
is available together with appropriate
partition function values.
Predictions should be sufficiently accurate for radio
astronomical observations throughout; some caution is
advised for transitions beyond 650 GHz.
The dipole was determined by
T. C. Steimle, D. A. Fletcher, K. Y. Jung, and C. T. Scurlock,
1992, J. Chem. Phys. 96, 2556.
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