Spectra of isotopically mixed benzene dimers: details on the interaction in the vdW bond

Isotopically mixed jets of benzene produced the various possible isotopic benzene dimers in a supersonic jet. Mass coincidence in time-of-flight multiphoton mass spectra separated the spectra due to the various dimers produced into distinguishable spectra even in the presence of overlap. From the ma...

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Bibliographic Details
Published in:The Journal of chemical physics 1986-08, Vol.85 (4), p.1726-1732
Main Authors: BÖRNSEN, K. O, SEIZLE, H. L, SCHLAG, E. W
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Ultraviolet spectra
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Summary:Isotopically mixed jets of benzene produced the various possible isotopic benzene dimers in a supersonic jet. Mass coincidence in time-of-flight multiphoton mass spectra separated the spectra due to the various dimers produced into distinguishable spectra even in the presence of overlap. From the many different isotopic spectral shifts a detailed model of interaction between the two halves of the dimer can be established revealing detailed new information on this interaction. In particular a splitting in the 0–0 transition is reported for the first time indicating an exciton interaction in the dimer of isotropic identical benzene molecules in the gas phase.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.451173