Spectroelectrochemistry and resonance raman spectra of vanadium(II) and (III) complexes of 2,2'-bypyridine
The optical and redox properties of the (V(bipy)/sub 3/)/sup 2+/ and (V/sub 2/O(bipy)/sub 4/Cl/sub 2/)/sup 2+/ complexes (bipy = 2,2'-bipyridine) were studied by resonance Raman and spectroelectrochemical techniques. Strong enhancement of the vibrational modes of bipy was observed in the Raman spectra of the (V(bipy)/sub 3/)/sup 2+/ complex. In contrast, the Raman spectra of (V/sub 2/O(bipy)/sub 4/Cl/sub 2/)/sup 2+/ exhibited pronounced enhancement of the vibrational modes of the V(III)-O-V(III) chromophore. Spectroelectrochemical measurements carried out for the (V(bipy)/sub n/)/sup 2+/ complexes showed that for n = 1 and 2, the oxidation process leads to oxo-bridged binuclear V(III) species, and for n = 3, the oxidation proceeds via two successive electron transfer steps, generating vanadium(IV) products.
- Research Organization:
- Universidade de Sao Paulo (Brazil)
- OSTI ID:
- 5830279
- Journal Information:
- J. Coord. Chem.; (United States), Journal Name: J. Coord. Chem.; (United States) Vol. 18:4; ISSN JCCMB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
400500 -- Photochemistry
AZINES
BIPYRIDINES
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DATA
ELECTROCHEMISTRY
ELECTRON TRANSFER
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
LASER SPECTROSCOPY
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHYSICAL PROPERTIES
PYRIDINES
RAMAN SPECTRA
RAMAN SPECTROSCOPY
REDOX REACTIONS
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES
VANADIUM COMPLEXES