کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5414519 | 1506735 | 2014 | 7 صفحه PDF | دانلود رایگان |
- Allen and propyne spectra measured at high temperatures.
- Absorption peaks decrease while the wings increase with temperature.
- Integrated band intensities exhibit small variations with temperature.
- The ν1 band of propyne is stronger than the ν1 band of allene.
Allene (a-C3H4; CH2CCH2) and propyne (p-C3H4; CH3C2H) have attracted much interest because of their relevance to the photochemistry in astrophysical environments as well as in combustion processes. Both allene and propyne have strong absorption in the infrared region. In the present work, infrared spectra of a-C3H4 and p-C3H4 are measured in the gas phase at temperatures ranging from 296 to 510Â K. The spectra are measured over the 580-3400Â cmâ1 spectral region at resolutions of 0.08 and 0.25Â cmâ1 using Fourier Transform Infrared spectroscopy. Absolute integrated intensities of the main infrared bands are determined at room temperature and compared with values derived from literature for both molecules. Integrated band intensities are also determined as a function of temperature in various spectral regions.
Journal: Journal of Molecular Spectroscopy - Volume 305, November 2014, Pages 10-16