Details

Autor(en) / Beteiligte

• Menendez Rodriguez, Gabriel
• Domestici, Chiara
• Bucci, Alberto
• Valentini, Massimiliano
• Zuccaccia, Cristiano
• Macchioni, Alceo

Titel

Hydrogen Liberation from Formic Acid Mediated by Efficient Iridium(III) Catalysts Bearing Pyridine‐Carboxamide Ligands

Ist Teil von

• European journal of inorganic chemistry, 2018-06, Vol.2018 (20-21), p.2247-2250

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2018

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• 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 µm, 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. [Cp*Ir(R‐pica)Cl] catalyzes 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.