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The experimental microwave line list was published
by
(1) A. J. Remijan, P. B. Changala, C. Xue, E. Q. H. Yuan, M. Duffy,
H. N. Scolati, C. N. Shingledecker, T. H. Speak, I. R. Cooke,
R. Loomis, A. M. Burkhardt, Z. T. P. Fried, G. Wenzel, A. Lipnicky,
M. C. McCarthy, and B. A. McGuire,
2025, Astrophys. J., in press.
The data set is somewhat limited, but should be sufficient
for observations in cold sources. Low-K transitions
should be viewed with caution above J = 15.
Transitions with Ka exceeding two should
be viewed with increased caution.
At low temperatures, it may be necessary to discern between
ortho-c-H2C3S and
para-c-H2C3S. The ortho
and para states are described by Ka odd
and even, respectively. The nuclear spin-weights are 3 and 1 for
ortho-c-H2C3S and
para-c-H2C3S, respectively.
The JKaKc = 111
level is the lowest ortho level.
It is 1.1921 cm–1 above ground.
The dipole moment is from a quantum chemical
calculation in (1).
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