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Study of tetraphenyltin dynamics by Raman and infrared spectroscopy
Author(s) -
Pajzderska A.,
Ecolivet C.,
Girard A.,
Ściesiński J.,
Wasiutyński T.,
Wa̧sicki J.
Publication year - 2002
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.889
Subject(s) - raman spectroscopy , arrhenius equation , infrared , chemistry , infrared spectroscopy , activation energy , molecule , spectral line , atmospheric temperature range , lattice (music) , wavenumber , molecular vibration , normal mode , molecular physics , analytical chemistry (journal) , vibration , physics , thermodynamics , optics , quantum mechanics , organic chemistry , chromatography , acoustics
Polarized and unpolarized Raman spectra and infrared absorption spectra were studied in a wide range of temperature and wavenumbers and related to group theory predictions. Molecular dynamics of an isolated molecule and lattice dynamics in the rigid molecule approximation were calculated. In the range up to 200 cm −1 the Raman spectrum revealed 19 modes whereas only nine external mode are expected. Such a large number of modes can be interpreted as a result of mixing of the internal (intraphenyl) vibrations with the lattice modes. The temperature dependence of the half‐width of the band centre at 122 cm −1 (at 110 K) obeys an Arrhenius‐type law corresponding to an activation energy about 3 kJ mol −1 . This energy is comparable to the activation energy obtained from NMR study. This was assigned to the oscillations of the phenyl rings. Copyright © 2002 John Wiley & Sons, Ltd.

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