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Infrared and resonance Raman spectroscopic studies of 1‐hydroxy‐9,10‐anthraquinone and its metal complexes
Author(s) -
Dutta Prabir K.,
Hutt Julie A.
Publication year - 1987
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.1250180508
Subject(s) - raman spectroscopy , delocalized electron , chemistry , anthraquinone , deprotonation , resonance (particle physics) , chromophore , chelation , metal , photochemistry , resonance raman spectroscopy , electron paramagnetic resonance , infrared , ion , ligand (biochemistry) , metal ions in aqueous solution , infrared spectroscopy , inorganic chemistry , nuclear magnetic resonance , organic chemistry , atomic physics , biochemistry , physics , receptor , optics
Infrared and resonance Raman spectra of 1‐hydroxy‐9, 10‐anthraquinone, its deuteriated and deprotonated forms and its metal chelates with Cu II , Ni II and Co II ions are presented. Vibrational assignments of the carbonyl, hydroxyl and the chelating unit of this chromophore are emphasized. It is found that the different metal ions force delocalization of the electrons on the chelate rings to different extents. The intensities of the Raman bands under resonance conditions suggest that the electronic band in the visible region is mainly of a charge‐transfer type from the metal to the ligand.