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Organometallic photoreductants

Sattler, Wesley and Winkler, Jay and Gray, Harry (2014) Organometallic photoreductants. In: 248th American Chemical Society National Meeting & Exposition, August 10-14, 2014, San Francisco, CA.

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We have synthesized and fully characterized several tungsten arylisocyanide complexes, W(CNAr)_6, all of which exhibit intense metal-to-ligand charge transfer (MLCT) absorptions in the visible region of the spectrum. The lowest triplet excited state is emissive, with lifetimes ranging from 17 ns to 3.0 μs depending on the arylisocyanide ligand. A modular synthesis has been developed for tungsten oligoaryl isocyanide complexes whose triplet excited states, *W(CNAr)_6, are extremely powerful reductants: *W(CNAr)_6/[W(CNAr)6]+ potentials are near -2.7 V vs. Cp_2Fe/Cp_2Fe+. *W(CNAr)6 complexes rapidly reduce anthracene, benzophenone, and cobalticenium ion, thereby demonstrating that very challenging electron transfer reactions can be driven by these sensitizers. We are extending our work to include investigations of the photophysics and photochem. of closely related arylisocyanide complexes of chromium and molybdenum.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Website
Sattler, Wesley0000-0001-5316-260X
Winkler, Jay0000-0002-4453-9716
Gray, Harry0000-0002-7937-7876
Additional Information:© 2014 American Chemical Society.
Record Number:CaltechAUTHORS:20140812-135326530
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48423
Deposited By: Tony Diaz
Deposited On:12 Aug 2014 21:02
Last Modified:22 Nov 2019 09:58

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