High-Resolution Fourier Transform Spectrum of the ν13 Fundamental Band of Triacetylene in the Far-Infrared Region

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

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 423 KB
• Volume: 164
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1088

✦ Synopsis

The lowest fundamental band (\nu_{13}) of triacetylene (\left(\mathrm{HC}{6} \mathrm{H}\right)) was measured in high resolution using a Fourier transform IR spectrometer in the range from 27 to (227 \mathrm{~cm}^{-1}). The resolution achieved was about (0.0018 \mathrm{~cm}^{-1}). The rotation-vibration band of (v{13}) and the associated hot bands have been assigned using a computer-assisted Loomis-Wood diagram. Molecular constants for each vibrational state, i.e., the (v_{13}=1,2), and 3 states as well as the ground state have been determined by a least-squares fit procedure using an effective Hamiltonian for linear molecules. The band origin of the (\nu_{13}) bending vibration was determined to be (105.038480(63) \mathrm{cm}^{-1}). (c) 1994 Academic Press. Inc.