First far-infrared high-resolution analysis of the ν2 and ν4 bands of phosgene 35Cl2CO and 35Cl37ClCO
| Autor: | Walter J. Lafferty, Jean-Marie Flaud, M. Ndao, A. Perrin, F. Kwabia Tchana, Laurent Manceron |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
010304 chemical physics 010504 meteorology & atmospheric sciences Spectrometer Resolution (electron density) Biophysics Synchrotron radiation Condensed Matter Physics 01 natural sciences symbols.namesake Experimental uncertainty analysis Fourier transform Far infrared Distortion 0103 physical sciences symbols Isotopologue Physical and Theoretical Chemistry Atomic physics Molecular Biology 0105 earth and related environmental sciences |
| Zdroj: | Molecular Physics. 116:3463-3467 |
| ISSN: | 1362-3028 0026-8976 |
| DOI: | 10.1080/00268976.2017.1390616 |
| Popis: | A Fourier transform spectrum of phosgene (Cl2CO) has been recorded in the 17.3-μm spectral region at a temperature of 180 K and at a resolution of 0.00102 cm−1 using a Bruker IFS125HR spectrometer coupled to synchrotron radiation, leading to the observation of the ν2 and ν4 vibrational bands of the two isotopologues 35Cl2CO and 35Cl37ClCO. The corresponding upper-state ro-vibrational levels were fit using a Hamiltonian model accounting for the A-type Coriolis interaction linking the rotational levels of the 21 and 41 vibrational states. In this way, it was possible to reproduce the upper-state ro-vibrational levels to within the experimental uncertainty, i.e. ∼0.30 × 10−3 cm−1. Very accurate rotational and centrifugal distortion and interaction constants were derived from the fit, together with the following band centres: ν0(ν2, 35Cl2CO) = 572.526299(30) cm−1, ν0(ν4, 35Cl2CO) = 582.089026(30) cm−1, ν0(ν2, 35Cl37ClCO) = 568.951791(35) cm−1 and ν0(ν4, 35Cl37ClCO) = 581.758279(35) cm−1. |
| Databáze: | OpenAIRE |
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