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Raman excitation profiles and molecular structures in the excited electronic states of 2,2′‐dipyridylamine
Author(s) -
Chattopadhyay S.,
Jana P.,
Mitra A.,
Sarkar S. K.,
Ganguly T.,
Mallick P. K.
Publication year - 1997
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/(sici)1097-4555(199708)28:8<559::aid-jrs113>3.0.co;2-r
Subject(s) - excited state , raman spectroscopy , excitation , chemistry , excited electronic state , molecule , singlet state , molecular vibration , atomic physics , molecular physics , normal mode , electronic structure , vibration , computational chemistry , optics , physics , quantum mechanics , organic chemistry
Raman excitation profiles (REPs) of several totally symmetric vibrations of 2,2′‐dipyridylamine (DPA) were measured and analysed. Possible molecular structures and other interesting properties of the molecule in the excited electronic states are discussed. Normal‐mode characteristics are also described. Of the three excited states found from the electronic absorption spectra, it is shown that the molecular geometry is not significantly changed in the lowest excited singlet state (assigned as the 1 L a state). © 1997 John Wiley & Sons, Ltd.