High resolution analysis of C2D4 in the region of 600–1150 cm−1
| Autor: | Fangce Zhang, A. L. Fomchenko, Elena Sergeevna Bekhtereva, Christof Maul, O.N. Ulenikov, Olga Vasilievna Gromova, C. Sydow, Sigurd Bauerecker |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
High resolution analysis Radiation 010304 chemical physics 010504 meteorology & atmospheric sciences Infrared Infrared spectroscopy 01 natural sciences Atomic and Molecular Physics and Optics symbols.namesake 0103 physical sciences symbols Molecule High resolution spectra Atomic physics Hamiltonian (quantum mechanics) Ground state Spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 182:55-70 |
| ISSN: | 0022-4073 |
| Popis: | High-accurate Fourier-transform infrared spectra of C2D4 were recorded and analyzed in the region of 600–1150 cm−1 where the bands ν 7 ( B 1 u ) , ν 10 ( B 2 u ) , ν 12 ( B 3 u ) are located as well as the ν 4 ( A u ) band which is forbidden by the symmetry of the molecule. The ground state rotational structure was re-analyzed by the use of ground state combination differences obtained on the basis of infrared transitions of the ν12 and ν7 absorption bands. This gave us the possibility to considerably improve the rotational and centrifugal parameters of the ground vibrational state. The analysis of the experimental data and the subsequent weighted-fit procedure of the Hamiltonian parameters allowed us to reproduce the initial 4405 “experimental” ro-vibrational energy values with the d rms = 2.1 × 10 − 4 cm − 1 . |
| Databáze: | OpenAIRE |
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