Formic Acid Dehydrogenation by a Cyclometalated κ3-CNN Ruthenium Complex

Alexander Léval, Henrik Junge, Matthias Beller

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Hydrogen utilization as a sustainable energy vector is of growing interest. We report herein a cyclometalated ruthenium complex [Ru(κ3-CNN)(dppb)Cl], originally described by Baratta, to be active in the selective dehydrogenation (DH) of formic acid (FA) to H2 and CO2. TON's of more than 10000 were achieved under best conditions without observation of CO (detection limit 10 ppm). The distinguished behavior of the catalyst was explored varying the starting conditions. Our observation revealed the complex [Ru(κ3-CNN)(dppb)(OOCH)] as key species in the catalytic cycle.

Original languageEnglish
Pages (from-to)1293-1299
Number of pages7
JournalEuropean Journal of Inorganic Chemistry
Issue number14
StatePublished - 16 Apr 2020
Externally publishedYes


  • Formic acid dehydrogenation
  • Homogeneous catalysis
  • Hydrogen storage
  • Renewable energy
  • Ruthenium


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