N-H Bond Formation in a Manganese(V) Nitride Yields Ammonia by Light-Driven Proton-Coupled Electron Transfer

Dian Wang, Florian Loose, Paul J. Chirik, Robert R. Knowles

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A method for the reduction of a manganese nitride to ammonia is reported, where light-driven proton-coupled electron transfer enables the formation of weak N - H bonds. Photoreduction of (sal tBu )Mn V N to ammonia and a Mn(II) complex has been accomplished using 9,10-dihydroacridine and a combination of an appropriately matched photoredox catalyst and weak Brønsted acid. Acid-reductant pairs with effective bond dissociation free energies between 35 and 46 kcal/mol exhibited high efficiencies. This light-driven method may provide a blueprint for new approaches to catalytic homogeneous ammonia synthesis under ambient conditions.

Original languageEnglish (US)
Pages (from-to)4795-4799
Number of pages5
JournalJournal of the American Chemical Society
Volume141
Issue number12
DOIs
StatePublished - Mar 27 2019

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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