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Table 1

Lowest vibrational modes of HC3N.

Mode Vibration Energy (a)

(meV) (K)
v1 C–H stretch 412 4781
v2 C≡N stretch 282 3272
v3 C≡C stretch 257 2982
v4 C–C stretch 109 1265
v5 CCH bend 82 952
v6 CCN bend 62 719
v7 CCC bend 28 325

Notes. (a)The spectroscopic experimental vibrational energies are from Leach et al. (2014).

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