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Fulminic acid is a quasi-linear molecule close
to the linear limit.
The lines were taken from
(1) M. Winnewisser and B. P. Winnewisser,
1971, Z. Naturfosch. 26a, 128.
The predictions are reliable up to about 800 GHz.
Contributions of excited vibrational states to the
partition function can be neglected up to
about 50 K.
14N hyperfine splitting may be resolved
for low values of J. Therefore, a
separate hyperfine calculation is provided for
J' ≤ 3 and frequencies below 69 GHz.
The quadrupole coupling parameter was taken from
(2) W. Hüttner, H. K. Bodenseh, P. Nowicki, K. Morgenstern,
1978, J. Mol. Spectrosc. 71, 246.
NOTE: The partition function
does not take into account the spin multiplicity
gI = 3 of the 14N
nucleus !
The dipole moment was reported by
(3) R. Takashi, K. Tanaka, and T. Tanaka,
1989, J. Mol. Spectrosc. 138, 450.
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