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The observed transitions have been summarized
in
(1) S. Brünken, U. Fuchs, F. Lewen, S. Urban,
T. Giesen, and G. Winnewisser,
2004, J. Mol. Spectrosc., 225, 152.
The v = 0 and v2 = 1 state data
have been fit together along with
ν2 infrared data from
(2) E. Möllmann, A. G. Maki, M. Winnewisser,
B. P. Winnewisser, and W. Quapp,
2002, J. Mol. Spectrosc. 212, 22.
The dipole moment was assumed to agree with that of
DCN, see e028509.cat.
The 14N hyperfine splitting can be resolved for low values
of J. Therefore, a separate
hyperfine calculation is provided for J" ≤ 6.
The spin multiplicity gI of 3 for the
14N nucleus is included in the partition function.
The partition function takes into account both vibrational
states. Contributions of vibrational states to the partition
function are given in parentheses.
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