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Details for article 9 of 18 found articles
| Title: |
High-resolution infrared and microwave study of 10BF2 OH and 11BF2OH: the 5, 6l, 71, 8l, 91 and 81 91 vibrationally excited states |
| Author: |
Perrin, A. Carvajal-Zaera, M. Dutkiewicz, Z. Flaud, J. -M. Collet, D. Burger, H. Demaison, J. Willaert, F. Mader, H. Larsen, N. W. |
| Appeared in: |
Molecular physics |
| Paging: | Volume 102 (2004) nr. 14-15 pages 1641-1652 |
| Year: |
2004-07-01 |
| Contents: |
High-resolution (≤2.4×10-3cm-1) Fourier transform infrared spectra of gas-phase 10B-enriched isotopic and natural samples of BF2OH (difluoroboric acid) were recorded in the 400-4000 cm-1 spectral range. Starting from the results of a previous study [Collet, D., Perrin, A., Burger, H., and Flaud, J.-M., 2002, J. Molec. Spectrosc. 212, 118], which involved the v8 10BF2 out-of-plane bending) and v9 (OH torsion) bands of 11BF2OH, it has been possible to perform the first rovibrational analysis of the v5 10BF2 bending), v8, v9 and v8+v9 bands of'11BF2OH, and of the v7 (F2BO in-plane bending), v5, and v8+v9 bands of 11BF2OH up to very high rotational quantum numbers. In addition, microwave transitions within the 51, 61, 71 and 81 vibrational states of 11BF2OH were measured using predictions from ab initio calculations [Breidung, J., Demaison, J., D'Eu, J.-F., Margules, L., Collet, D., Mkadmi, E. B., Perrtn, A., And Thiel, W., 2004, J. Mol. S ectrosc. (in press)]. The v5, v8, v9 and v8+v9 bands of' bands of 10BF2OH and the v8+v9 band of'BF2OH are not significantly affected by ptrturbations, and the experimental 51, 81 and 91 of 10BF2OH and the 8191 energy levels of BF20H and 10BF2OH could be reproduced using a simple Watson-type Hamiltonian. For the v5 and v7 bands of 11BF2OH, C-type Coriolis interactions coupling the 51 and 71 energy levels with those of the 72 and 61 dark states, respectively, were accounted for in the calculation. In addition, an updated set of rotational parameters was provided for the unperturbed 81 and 91 vibrational states of 11BF2OH using the data from our previous analysis. In all these cases, the upper state parameters derived in this work enabled the reproduction of both the infrared and microwave data to within experimental uncertainties. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 9 of 18 found articles
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