Structural characterization of photoexcited ruthenium(II) octaethylporphyrin
- Univ. of New Mexico, Albuquerque (USA)
The nature of photoexcited and photoproduct species of Ru{sup II} octaethylporphyrins has been investigated using absorption, infrared, and transient resonance Raman spectroscopies. The photodynamic behavior of Ru{sup II}(CO)OEP in coordinating and noncoordinating solvents is governed by both CO back-bonding and the {sigma}-donating character of the axial ligands. Ru{sup II}(CO)OEP in coordinating solvent undergoes CO photolysis followed by the rapid irreversible addition of a ligand to form the bis-ligated product. In contrast, photoexcitation of Ru{sup II}(CO)OEP in methylene chloride or bromobenzene does not result in CO ejection but yields a metastable species whose vibrational properties are consistent with a charge-transfer species. The photodynamics of Ru{sup II}OEP(pip){sub 2}, on the other hand, produces a transient species within the laser pulse that is interpreted to arise from a d {yields} {pi}* transition.
- OSTI ID:
- 7159058
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:13; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400000 -- Chemistry
400201 -- Chemical & Physicochemical Properties
CARBOXYLIC ACIDS
CHEMISTRY
COMPLEXES
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
INFRARED SPECTRA
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMISTRY
PORPHYRINS
RAMAN SPECTRA
RUTHENIUM COMPLEXES
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES