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Solvent-dependent study of anisotropy shift in the CO stretching mode of benzaldehyde

✍ Scribed by Arpita Das; Kamal Kumar

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
59 KB
Volume
30
Category
Article
ISSN
0377-0486

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✦ Synopsis

The analysis of the C O stretching vibrational mode of benzaldehyde has been carried out at different concentrations of the solvents (V/V) ranging from 10% to 90% by observing the Raman spectrum. The isotropic band shape and anisotropy shift are discussed qualitatively by taking into account the role of repulsive type of intermolecular forces. The solvent dependent study of the anisotropy shift reveals that the repulsive component of the intermolecular interaction potential may be playing a dominant role in the case of complex molecular systems.

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We have investigated the vibrational relaxation of the OH impurity stretch mode in amorphous SiO 2. At low temperatures, a short relaxation time of ~-10-l0 s is found that varies strongly across the inhomogeneously broadened absorption line. The inhomogeneous broadening is caused by a site-dependent