Application of transient infrared spectroscopy to intramolecular energy transfer in [(phen) (CO)[sub 3]Re[sup I](NC) Ru[sup II](CN) (bpy)[sub 2]][sup +]

Journal Article · Wed Nov 17 04:00:00 EST 1993 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00076a070· OSTI ID:7302072

Schoonover, J R; Myer, T J ^[1]; Gordon, K C; Woodruff, W H; Peterson, K A; Dyer, R B ^[2]; Argazzi, R; Bignozzi, C A ^[3]

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1. Univ. of North Carolina, Chapel Hill, NC (United States)
2. Los Alamos National Lab., NM (United States)
3. Universita di Ferrara (Italy)

Significant advances have been made in the design and characterization of molecular assemblies, which, when photolyzed, undergo intramolecular electron or energy transfer. Time-resolved resonance Raman spectroscopy has been successfully applied to the study of excited states and molecular assemblies, but time-resolved infrared spectroscopy is particularly well-suited for complexes containing ligands such as CO or CN. Unlike the transient Raman experiment, infrared spectroscopy does not rely on resonance enhancement in the excited state since the metal-CO and -CN stretching vibrations have high oscillator strengths, providing high sensitivity. We describe here a novel application of the technique to the elucidation of intramolecular energy transfer in the ligand-bridged complex [(phen)(CO)[sub 3]Re[sup I](NC) Ru[sup II](CN) (bpy)[sub 2]][sup +] (phen is 1, 10-phenanthroline; bpy is 2,2'-bipyridine). These results show that the transient infrared technique can be a powerful tool for the elucidation of oxidation state and mechanisms involving photochemical intermediates by direct observation of ligand vibrations. 15 refs., 2 figs.

• DOE Contract Number: FG05-86ER13633
• OSTI ID: 7302072
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 115:23; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
CHEMICAL REACTIONS
COMPLEXES
DECOMPOSITION
ENERGY TRANSFER
INFRARED SPECTRA
LASERS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
REACTION INTERMEDIATES
RHENIUM COMPLEXES
RUTHENIUM COMPLEXES
SPECTRA
TRANSITION ELEMENT COMPLEXES