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Mode-selective broadening in low-frequency vibrational modes of trans-stilbene van der waals complexes

โœ Scribed by Craig A. Taatjes; Wayne B. Bosma; Timothy S. Zwier

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
465 KB
Volume
128
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Both REZPI and LIF excitation spectra have been taken of several van der Waals complexes of trans-stilbene, p-methyl-, and m-methyl-trans-stilbene.

The r-stilbene spectra reveal a strongly mode-dependent broadening of the van der Waals complex transitions associated with the low-frequency vibrations 82 and 95 cm-' above the origin. The fwhm of these peaks is three ttmes as broad as any other feature in the spectrum. The source of the broadening appears to be fast vibrational relaxation from these modes to the van der Waals modes of the complex.

๐Ÿ“œ SIMILAR VOLUMES

Local modes analysis of vibrational pred
Local modes analysis of vibrational predissociation in iodine-inert gas van der waals complexes
โœ Michael E. Kellmann ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 464 KB

We propose a local modes description of stretching motion and enera transfer in photocxcited IzS,, ran der Wa;lls compleses. In a simple local modes model. we find decrcasin, 0 efficiency of vibrationA predissociation as the size of the complex grows. in qualitative agreement with recent esperimcnts