Infrared activation due to dynamic symmetry-breakdown in polyatomic molecules

  • Koichiro YamakawaEmail author
Regular Article


Polyatomic molecules undergo symmetry breakdown upon vibration in contrast to diatomic ones and therefore have some infrared-inactive vibrational modes which are excited through the dipole transition owing to coupling with other modes. It is both the anharmonic potentials and high-order derivatives of the dipole operator with respect to the normal coordinates that cause the fundamental bands of inactive modes. Individual molecules with specific symmetries are discussed in detail, so that the modes which are activated by the dynamic symmetry-breakdown become clear.

Graphical abstract


Molecular Physics and Chemical Physics 


  1. 1.
    D.J. Dai, G.E. Ewing, J. Chem. Phys. 98, 5050 (1993)ADSCrossRefGoogle Scholar
  2. 2.
    D.J. Dai, J. Chem. Phys. 104, 2461 (1995)ADSCrossRefGoogle Scholar
  3. 3.
    D.J. Dai, J. Chem. Phys. 104, 6338 (1996)ADSCrossRefGoogle Scholar
  4. 4.
    J.S. Burgess, Phys. Rev. 76, 302 (1949)CrossRefGoogle Scholar
  5. 5.
    R.B. Holden, W.J. Taylor, H.L. Johnston, J. Chem. Phys. 17, 1356 (1949)ADSCrossRefGoogle Scholar
  6. 6.
    R.K. Khanna, M. Ngoh, Spectrochim. Acta A 46, 1057 (1990)ADSCrossRefGoogle Scholar
  7. 7.
    A.L.F. de Barros, V. Bordalo, E.S. Duarte, E.F. da Silveira, A. Domaracka, H. Rothard, P. Boduch, Astron. Astrophys. 531, A160 (2011)CrossRefGoogle Scholar
  8. 8.
    R. Hodyss, P.V. Johnson, J.V. Stern, J.D. Goguen, I. Kanik, Icarus 200, 338 (2009)ADSCrossRefGoogle Scholar
  9. 9.
    R. Escribano, V. Timon, O. Gálvez, B. Maté, V.J. Herrero, Phys. Chem. Chem. Phys. 16, 16694 (2014)CrossRefGoogle Scholar
  10. 10.
    O. Gálvez, B. Maté, V.J. Herrero, R. Escribano, Astrophys. J. 703, 2101 (2009)ADSCrossRefGoogle Scholar
  11. 11.
    V.J. Herrero, O. Gálvez, B. Maté, R. Escribano, Phys. Chem. Chem. Phys. 12, 3164 (2010)CrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of PhysicsGakushuin UniversityTokyoJapan

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