HCNS is a linear or, more likely, quasi-linear molecule.
It is much higher in energy than HNCS and HSCN.
The lines were taken from
(1) B. A. McGuire, M.-A. Martin-Drumel, S. Thorwirth, S. Brünken,
V. Lattanzi, J. L. Neill, S. Spezzano, Z. Yu, D. P. Zaleski,
A. J. Remijan, B. H. Pate, and M. C. McCarthy,
2016, Phys. Chem. Chem. Phys. 18, 22693.
Predictions may be reliable up to 100 GHz,
possibly even higher.
14N hyperfine splitting may be resolved
for low values of J. Therefore, a
separate hyperfine calculation is provided for
J' ≤ 2 along with
appropriate partition function values.
The ab initio dipole moment was taken from (1).
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