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Resonance Raman spectroscopy of rhodizonates: Evidence of low‐energy transitions in the solid state
Author(s) -
Gonçalves Norberto Sanches,
Santos Paulo Sergio
Publication year - 1995
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.1250260507
Subject(s) - raman spectroscopy , excited state , chemistry , intermolecular force , spectral line , solid state , resonance raman spectroscopy , spectroscopy , resonance (particle physics) , analytical chemistry (journal) , crystallography , atomic physics , optics , molecule , physics , organic chemistry , quantum mechanics , astronomy
The optical and Raman spectra of several salts of rhodizonic acid were investigated, aimed at a better understanding of the dramatic dependence of their colours on the nature of the cation. The results indicate that in addition to the maxima observed in the optical spectra, another transition in the red edge must be present in the solid state, as indicated by the large number of overtones and combination bands in the Raman spectra excited in the red. It is suggested that such a low‐energy transition observed only in the solid state is of intermolecular origin, as observed previously for other related systems.