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Kolmeder, Christian; Zinth, Wolfgang and Kaiser, Wolfgang (24. September 1982): Changes of vibrational lifetimes with minor structural modification of small polyatomic molecules. In: Chemical Physics Letters, No. 91: pp. 323-328 [PDF, 447kB]


Substantial changes of population lifetimes of CH-stretching modes are observed when two atoms are exchanged in CH2=CCl2 to form trans CHCl=CHCl and when three deuterons are substituted in C6H6 to form 1,3,5.-C6H3D3. The measured lifetimes are in good agreement with estimates based on Fermi resonance-mixing which is inferred from infrared and Raman spectra.

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