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The lines have been reported by
(1) M. C. McCarthy, and P. Thaddeus,
2005, J. Chem. Phys. 122, Art. No. 174308.
The fit has been carried out using constants and
quantum numbers of Hund's case (b). Slightly more
centrifugal distortion terms compared to those of (1) were
used in the fit as fixed parameters, see (1) and the
C6H entry, tag 073501.
The present data set comprises only of a small number of
transitions partaining to the 2Π3/2
spin-substate. Therefore, predictions above
100 GHz should be viewed with great caution.
Moreover, predictions for the 2Π1/2
spin-substate (J + 1/2 = N)
are unreliable.
The 1H and 13C hyperfine
may be resolvable at low frequencies. The predictions
consider both.
The dipole moment is assumed to agree with that of the main
isotopic species, see e073501.cat.
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