Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2000-04-01

Raman excitation profiles and excited state molecular configurations of three isomeric phenyl pyridines.

P Sett, S Chattopadhyay, P K Mallick

Index: Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 56(5) , 855-75, (2000)

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Abstract

Contributions of different electronic states to Raman scattering have been studied by critical analyses of Raman excitation profiles (REPs) of several normal modes of vibration of three isomeric phenyl pyridines. In this context, possible structures and other interesting properties of the three molecules in the excited electronic states have been discussed. Normal mode characteristics are also described. Most likely a singlet state, lying in the vacuum ultraviolet region with respect to the ground state, is found to be playing a very significant role in the scattering phenomena.

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