𝔖 Bobbio Scriptorium
✦   LIBER   ✦

High-Resolution Infrared Spectrum of Monoiodoacetylene Between 2000 and 3000 cm−1

✍ Scribed by Anne-Maaria Ahonen; Tarmo Ahonen; Seppo Alanko

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
260 KB
Volume
191
Category
Article
ISSN
0022-2852

No coin nor oath required. For personal study only.

✦ Synopsis

The high-resolution infrared spectrum of monoiodoacetylene measured with a Bruker IFS 120 HR Fourier transform spectrometer in the spectral range of 2000 -3000 cm Ϫ1 has been studied in detail. The strongest bands observed in the wavenumber region investigated are the C-C stretching fundamental 2 (2034 -2082 cm Ϫ1 ) and the accompanying hot bands of the types 2 ϩ n Ϫ n , where n ϭ 3, 4, or 5, associated with the lowest stretching state v 3 ϭ 1 and with the low-lying bending states v 4 ϭ 1 and v 5 ϭ 1, 2, respectively. The combination bands of the types 2 ϩ n , where n is as above, starting direct from the ground state have also been observed. In addition, the weak overtone band 2 2 (4081-4121 cm Ϫ1 ) has been measured to study the anharmonicity of the C-C stretching mode. The new, more accurate values for the ground state rotational constants have been derived by combining the ground state combination differences calculated from our IR data available in the present work as well as in our previous investigations concerning the HCCI molecule to the accurate MW transitions from the literature. The rotational structures of the overtone level v 2 ϭ 2 and the combination levels v 2 ϭ v n ϭ 1, where n is as above, have been investigated by analyzing the observed spectra with a model including various Fermi-and l-type resonances. As a result, the values for the harmonic frequency 2 0 and the anharmonicity constants x 22 , x 23 , x 24 , and x 25 are determined.

📜 SIMILAR VOLUMES

High-Resolution Infrared Spectrum of Vin
High-Resolution Infrared Spectrum of Vinyl Fluoride at 500 cm−1
✍ A. Gambi; A. De Lorenzi; S. Giorgianni 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 247 KB

The infrared spectrum of vinyl fluoride (CH 2 |CHF ) has been investigated in the region 390-590 cm 01 at room temperature and at a resolution of 0.0016 cm 01 using a Fourier transform spectrometer. The rovibrational analysis of the spectral features allowed us to assign about 11 000 lines (J £ 60)

The High-Resolution Infrared Spectrum of
The High-Resolution Infrared Spectrum of 1,2,4-Triazine Vapor between 550 and 1700 cm−1
✍ D. Thastum Bach; F. Hegelund; J.A. Beukes; F.M. Nicolaisen; M.H. Palmer 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 352 KB

The Fourier transform gas-phase IR spectrum of 1,2,4-triazine between 550 and 1700 cm Ϫ1 was measured with a resolution of ca. 0.003 cm Ϫ1 . Comparing with the liquid-phase IR and Raman spectra and using ab initio predictions, most of the fundamental bands of 1,2,4-triazine below 1600 cm Ϫ1 were ass

The High Resolution Infrared Spectrum of
The High Resolution Infrared Spectrum of CH3D in the Region 900–1700 cm−1
✍ A. Nikitin; J.P. Champion; Vl.G. Tyuterev; L.R. Brown 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 344 KB

The high resolution absorption spectrum of CH 3 D in the region 900-1700 cm 01 has been reexamined on the basis of new long path experimental data recorded with the Fourier transform spectrometer at Kitt Peak. A theoretical model used previously for spherical rotors has been adapted for symmetric to

The High-Resolution Spectrum of Water Va
The High-Resolution Spectrum of Water Vapor between 11 600 and 12 750 cm−1
✍ J.-M. Flaud; C. Camy-Peyret; A. Bykov; O. Naumenko; T. Petrova; A. Scherbakov; L 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 355 KB

The absorption spectrum of water vapor has been recorded between 11 600 and 12 750 cm-1 with a Fourier transform spectrometer (Kitt Peak, Az) at a resolution of 0.012 cm-1 and with a path length of 434 m. The line assignment has led to the determination of 506 accurate energy levels of the (310) (21

High-Resolution Infrared Spectrum of H3S
High-Resolution Infrared Spectrum of H3SiI in the ν1/ν4Region near 2200 cm−1
✍ Jixin Cheng; Dong Wang; Georges Graner 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 261 KB

The Fourier transform infrared spectrum of H3SiI has been recorded in the nu1/nu4 region from 2075 to 2315 cm-1 at an optical resolution of 2.3 x 10(-3) cm-1. The nu1/nu4 fundamental bands and the (nu1 + nu3) - nu3/(nu4 + nu3) - nu3 hot bands have been rotationally investigated. Numerous local pertu