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Moments de Bandes et Fonctions de Correlation Rotationnelles en Infrarouge pour une Vibration Perpendiculaire D’une Molecule Lineaire

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Molecular Motions in Liquids

Résumé

L’objet du présent travail est la comparaison des fonctions de corrélation rotationnelles et des moments des vibrations perpendiculaires et parallèles d’une molécule linéaire. L’application de la théorie de Gordon permet tout d’abord de calculer les moments d’ordres 2 et 4 relatifs à une vibration perpendiculaire. D’autre part on peut établir, en mécanique classique, une relation entre les fonctions de corrélation Φ(t) et Φ(t) du rotateur libre. Cette relation permet de calculer Φ(t) dans l’hypothèse des modèles M et J de Gordon. Il est également possible, dans le cas du modèle de Steele, d’obtenir une relation entre les deux fonctions de corrélation. En dernier lieu on procède à une comparaison entre résultats théoriques et expérimentaux.

Abstract

In this work the rotational correlation functions and band moments of the perpendicular and parallel vibrations of linear molecules are compared. The application of existing theories to the parallel bands involves no difficulty, whereas the degenerate perpendicular vibrations are to be treated from the beginning in the particular case of the linear molecule.

The second and fourth infrared rotational moments of the bands have been calculated by Gordon in the most general case of the asymmetric top. The relations thus obtained may be applied to all particular cases, except to the perpendicular vibrations of linear molecules. Calculations similar to Gordon’s yield M = 1/2 M.

Correlation functions involve the consideration of several cases. First, in the case of the free rotator, one obtains: Ф ┴(t) = 1/2 [1 + Ф (t)]. The others imply models. In the case of Gordon’s M and J models we have evaluated Ф ┴(t), apart from Ф(t). Besides, the application of Steele’s method to this model leads to: [Ф(t)]2 = Ф(t), a relation which exhibits a satisfactory behaviour both to short and long times.

Finally all the above results are compared to experimental data.

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Bibliographie

  1. Gordon, R. G.: J. Chem. Phys. 39, 2788 (1963).

    Article  CAS  Google Scholar 

  2. Gordon, R. G.: J. Chem. Phys. 40, 1973 (1964).

    Article  CAS  Google Scholar 

  3. Gordon, R. G.: J. Chem. Phys. 41, 1819 (1964).

    Article  CAS  Google Scholar 

  4. Dreyfus, C., et Vincent-Geisse, J.: Chem. Phys. Letters 21, 170 (1973).

    Article  CAS  Google Scholar 

  5. Vincent-Geisse, J., Soussen-Jacob, J., et Nguyen Tan, T.: Compt. Rend. Acad. Sci. Paris 268, 1020 (1969).

    Google Scholar 

  6. Gordon, R. G.: J. Chem. Phys. 44, 1830 (1966).

    Article  CAS  Google Scholar 

  7. Steele, W. A.: J. Chem. Phys. 38, 2404 et 2411 (1963).

    Google Scholar 

  8. Bize, A. M.: Thèse 3ème cycle, 1971.

    Google Scholar 

  9. Levi, G., Chalaye, M., et Dayan, E.: Chem. Phys. Letters 12, 462 (1972).

    Article  CAS  Google Scholar 

  10. Bize, A. M., Soussen-Jacob, J., Vincent-Geisse, J., Legay, D., et Perchard, J. P.: Can. J. Chem. 50, 217 (1972).

    Article  CAS  Google Scholar 

  11. Elbez, G.: Thèse 3ème cycle, 1972.

    Google Scholar 

  12. Vincent-Geisse, J., Soussen-Jacob, J., Nguyen Tan, T., Descout, D.: Can. J. Chem. 48, 3918 (1970).

    Article  CAS  Google Scholar 

  13. Vincent-Geisse, J., Soussen-Jacob, J., Pelerin, D., et Bize, A. M.: Ber. Bunsenges. physik. Chem. 75, 348 (1971).

    CAS  Google Scholar 

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© 1974 D. Reidel Publishing Company, Dordrecht, Holland

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Vincent-Geisse, J., Dreyfus, C. (1974). Moments de Bandes et Fonctions de Correlation Rotationnelles en Infrarouge pour une Vibration Perpendiculaire D’une Molecule Lineaire. In: Lascombe, J. (eds) Molecular Motions in Liquids. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2177-7_30

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  • DOI: https://doi.org/10.1007/978-94-010-2177-7_30

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-2179-1

  • Online ISBN: 978-94-010-2177-7

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