The experimental lines are from
(1) M. J. Travers, M. C. McCarthy, P. Kalmus, C. A. Gottlieb, and P. Thaddeus,
2000, J. Mol. Spectrosc. 203, 75.
Values for the partition function were extrapolated
for T ≥ 75 K.
The 14N hyperfine splitting was not considered
because it was not resolved in the laboratory, and it is
unlikely to be resolved in the ISM.
The dipole moment is an extrapolation from lower members of the
HC2n+1N family.
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