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The two lowest rotational transitions were detected
in the laboratory with 14NHFS. Four additional
rest frequencies come from astronomical observations.
Both have been reported by
(1) C. Cabezas, J. Cernicharo, J. L. Alonso,
M. Agúndez, S. Mata, M. Guélin,
and I. Peña,
2013, Astrophys. J. 775, Art. No. 133.
Predictions with hyperfine splitting are also available
up to J" = 2 with related
partition function values.
Predictions above 180 GHz should be viewed with
caution. This should not be a severe restriction for
astronomical observations.
The ab initio dipole moment was taken
from
(2) M. Gronowski and R. Kolos,
2013, J. Phys. Chem. A 117, 4455.
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