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- Title
Hydrogen Liberation from Formic Acid Mediated by Efficient Iridium(III) Catalysts Bearing Pyridine‐Carboxamide Ligands.
- Authors
Menendez Rodriguez, Gabriel; Domestici, Chiara; Bucci, Alberto; Valentini, Massimiliano; Zuccaccia, Cristiano; Macchioni, Alceo
- Abstract
Herein it is shown that complexes [Cp*Ir(R‐pica)Cl] {R‐pica = R‐picolinamidate = κ2‐R‐pyridine‐2‐carboxamide ion (–1), 1 R = H and 2 R = Me} catalyze the liberation of H2 from formic acid (FA) in water, at ambient temperature and pressure, in the absence of any addictive/promoter, with performances comparable with those of the best catalysts reported so far. TOF values approaching 30000 h–1 were observed for 1 and 2 (pH = 3.7, [HCOOH] + [HCOO–] = 1 m, [Cat] = 250 µ m, T = 60 °C), whereas the TON was only limited by the amount of HCOOH used and by the increase of pH with the progress of reaction, which makes the protonation of Ir–H less probable.
- Subjects
HYDROGEN analysis; FORMIC acid; CATALYSTS; CARBOXAMIDES; LIGANDS (Chemistry)
- Publication
European Journal of Inorganic Chemistry, 2018, Vol 2018, Issue 20/21, p2247
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201701458