The High-Resolution Spectra of the ν11 Band of Triacetylene near 622 cm−1: Revised Assignments for Hot Bands

✍ Scribed by S. Haas; G. Winnewisser; K.M.T. Yamada; K. Matsumura; K. Kawaguchi

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 706 KB
• Volume: 167
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1224

✦ Synopsis

The rovibrational spectra of triacetylene (\left(\mathrm{C}{6} \mathrm{H}{2}\right)) were recorded for the (v_{11}) band in high resolution by FTIR spectroscopy. The assignments for the hot-band system (\left(v_{11}, v_{13}\right)=(1,1) \leftarrow(0,1)) have been fully revised, and reliable molecular parameters have been determined including the rotational and vibrational (l)-type doubling constants. The assignments have been confirmed by a simulation of the absorption profile in the (Q)-branch region. The intensity perturbation caused by the l-type resonance in the (\left(v_{11}, v_{13}\right)=(1,1)) state has been observed and discussed. (c) 1994 Academic Press, Inc.