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

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 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.

Original languageEnglish
Pages (from-to)2247-2250
Number of pages4
JournalEuropean Journal of Inorganic Chemistry
Volume2018
Issue number20
DOIs
Publication statusPublished - Jun 7 2018

Fingerprint

formic acid
Bearings (structural)
Iridium
Protonation
Hydrogen
Ions
Ligands
Catalysts
Water
Temperature
pyridine

Keywords

  • Dehydrogenation
  • H production
  • Homogeneous catalysis
  • Iridium

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Hydrogen Liberation from Formic Acid Mediated by Efficient Iridium(III) Catalysts Bearing Pyridine-Carboxamide Ligands. / Menendez Rodriguez, Gabriel; Domestici, Chiara; Bucci, Alberto; Valentini, Massimiliano; Zuccaccia, Cristiano; Macchioni, Alceo.

In: European Journal of Inorganic Chemistry, Vol. 2018, No. 20, 07.06.2018, p. 2247-2250.

Research output: Contribution to journalArticle

Menendez Rodriguez, Gabriel ; Domestici, Chiara ; Bucci, Alberto ; Valentini, Massimiliano ; Zuccaccia, Cristiano ; Macchioni, Alceo. / Hydrogen Liberation from Formic Acid Mediated by Efficient Iridium(III) Catalysts Bearing Pyridine-Carboxamide Ligands. In: European Journal of Inorganic Chemistry. 2018 ; Vol. 2018, No. 20. pp. 2247-2250.
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AU - Macchioni, Alceo

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