The lines have been reported by
(1) M. A. Brewster, A. J. Apponi, J. Xin, and L. M. Ziurys,
1999, Chem. Phys. Lett. 310, 411.
For low N transitions hyperfine splitting due to the
1H nucleus may be resolvable. Therefore,
predictions at lower frequencies should be viewed with
some caution. The predictions should be quite reliable
at higher frequencies.
The dipole moment was taken from an ab initio calculation
by
(2) D. E. Woon, 1996, Astrophys. J. 456, 602.
Note: The initial entry
from Nov. 2000 contained a typographical error for the
dipole moment which was also used in the calculation.
The version number has been retained.
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