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The J" = 0 transition frequencies were taken
from
(1) S. G. Kukolich,
1971, J. Chem. Phys. 55, 4488;
the information on the deuterium hyperfine structure
was eliminated. The remainder of the data was taken
from
(2) M. Melosso, A. Achilli, F. Tamassia, E. Canè,
A. Pietropolli Charmet, P. Stoppa, L. Dore,
2020, J. Quant. Spectrosc. Radiat. Transfer
248, Art. No. 106982.
The spectroscopic parameters differ slightly from
those in (2). The calculation should be sufficiently
accurate for all observational purposes.
The dipole moment components were derived from that
of CH3Cl determined by
(3) G. Wlodarczak, B. Segard, J. Legrand, and J. Demaison,
1985, J. Mol. Spectrosc. 11, 204;
taking into account the rotation of the inertial axis
system.
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