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The microwave transition frequencies were reported by
(1) M. Araki, M. Sanz-Novo, C. P. Endres, P. Caselli, V. M. Rivilla,
I. Jiménez-Serra, L. Colzi, S. Zeng, A. Megías, Á López-Gallifa,
A. Martínez-Henares, D. San Andrés, S. Martín,
M. A. Requena-Torres, J. G. de la Concepción, and V. Lattanzi,
2026, Nat. Astron. 10, 401.
The entry was truncated at J = 55 and 150 GHz
because of the limited line list. Transitions with uncertianties
exceeding 0.1 MHz should be viewed with great caution.
Transitions with ΔKa = 2 should be viewed
with additional caution.
At low temperatures, it may be necessary to discern between
ortho-2,5-c-C6H6S and
para-2,5-c-C6H6S. The ortho
and para states are described by Ka odd
and even, respectively. The nuclear spin-weights are 9 and 7 for
ortho-2,5-c-C6H6S and
para-2,5-c-C6H6S, respectively.
The JKaKc = 111
level is the lowest ortho level.
It is 0.2178 cm–1 above ground.
The dipole moment is from a quantum chemical calculation in (1).
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