Influence of the ligand structure on the electrochemical and spectroscopic properties of ruthenium(II)-polypyridine complexes
Journal Article
·
· Inorg. Chem.; (United States)
Extended Hueckel molecular orbital (EHMO) calculations on 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), and other unsubstituted polypyridine-type molecules have been performed to study the effect of the ligand structure on the spectroscopic and electrochemical properties of Ru(II)-polypyridine complexes. The obtained LUMO energies have been found to correlate with the first reduction potential of LL' and with the first reduction potentials of Ru(LL')/sub 3//sup 2 +/ or Ru(LL)/sub 2/(LL')/sup 2 +/ complexes, where LL' is a ligand easier to reduce than LL. Correlations between optical and electrochemical data of the same complexes have also been examined. Complexes containing LL' = taphen, DP or i-biq (taphen = dipyrido(3,2-c:2',3'-e)pyridazine, DP = dipyrido-(3,2-a:2',3'-c)phenazine, i-biq = 3,3'biisoquinoline) show an anomalous electrochemical and/or spectroscopic behavior. Possible reasons for such anomalies are discussed.
- Research Organization:
- Istituto FRAE-CNR, Bologna, Italy
- OSTI ID:
- 5370700
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 26:24; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
·
Tue Nov 20 23:00:00 EST 1984
· Inorg. Chem.; (United States)
·
OSTI ID:5700710
Bell-shaped energy-gap dependence of backward electron transfer occurring within geminate radical pairs produced by quenching of ruthenium(II) polypyridine complexes by aromatic amines
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·
Thu Jun 14 00:00:00 EDT 1990
· Journal of Physical Chemistry; (USA)
·
OSTI ID:6187512
Reduction of carbon dioxide by ruthenium complexes containing polypyridyl ligand
Conference
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Sat Dec 30 23:00:00 EST 1995
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OSTI ID:250145
Related Subjects
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
400500 -- Photochemistry
AROMATICS
AZAARENES
AZINES
BIPYRIDINES
CHEMISTRY
COMPLEXES
DATA
ELECTROCHEMISTRY
ELECTRONIC STRUCTURE
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
MATHEMATICAL MODELS
MOLECULAR MODELS
MOLECULAR ORBITAL METHOD
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENANTHROLINES
PHOTOCHEMISTRY
PYRIDINES
REDOX POTENTIAL
RUTHENIUM COMPLEXES
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
400500 -- Photochemistry
AROMATICS
AZAARENES
AZINES
BIPYRIDINES
CHEMISTRY
COMPLEXES
DATA
ELECTROCHEMISTRY
ELECTRONIC STRUCTURE
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
MATHEMATICAL MODELS
MOLECULAR MODELS
MOLECULAR ORBITAL METHOD
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENANTHROLINES
PHOTOCHEMISTRY
PYRIDINES
REDOX POTENTIAL
RUTHENIUM COMPLEXES
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES