Accumulation of Four Electrons on a Terphenyl (Bis)disulfide

Schmid, Lucius and Fokin, Igor and Brändlin, Mathis and Wagner, Dorothee and Siewert, Inke and Wenger, Oliver S.. (2022) Accumulation of Four Electrons on a Terphenyl (Bis)disulfide. Chemistry - A European Journal, 28 (72). e202202386.

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Official URL: https://edoc.unibas.ch/92099/

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The activation of N2, CO2 or H2O to energy-rich products relies on multi-electron transfer reactions, and consequently it seems desirable to understand the basics of light-driven accumulation of multiple redox equivalents. Most of the previously reported molecular acceptors merely allow the storage of up to two electrons. We report on a terphenyl compound including two disulfide bridges, which undergoes four-electron reduction in two separate electrochemical steps, aided by a combination of potential compression and inversion. Under visible-light irradiation using the organic super-electron donor tetrakis(dimethylamino)ethylene, a cascade of light-induced reaction steps is observed, leading to the cleavage of both disulfide bonds. Whereas one of them undergoes extrusion of sulfur to result in a thiophene, the other disulfide is converted to a dithiolate. These insights seem relevant to enhance the current fundamental understanding of photochemical energy storage.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
UniBasel Contributors:Wenger, Oliver and Schmid, Lucius and Brändlin, Mathis and Wagner, Dorothee
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:11 Jan 2023 09:32
Deposited On:11 Jan 2023 09:32

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