Intermolecular Fermi resonance

John A. Stride, Paul H. Dallin, Upali A. Jayasooriya

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20 Citations (Scopus)


The exceptionally broad feature at similar to3025 cm(-1) observed in the Raman spectrum of chloroform dissolved in liquid sulfur dioxide is shown to be due to the triple combination mode, nu(1)+nu(2)+nu(3), of sulfur dioxide gaining intensity by mixing with the fundamental C-H stretching mode of chloroform. Investigation of a number of similar systems shows that this broadening is unique to this system and is certainly not heterogeneous broadening due to C-H hydrogen bonding to SO2. This therefore is probably the first observation of the phenomenon of intermolecular Fermi resonance, between molecularly distinct species. (C) 2003 American Institute of Physics.
Original languageEnglish
Pages (from-to)2747-2752
Number of pages6
JournalJournal of Chemical Physics
Issue number5
Publication statusPublished - 2003

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