TY - JOUR
T1 - Hydrogen Liberation from Formic Acid Mediated by Efficient Iridium(III) Catalysts Bearing Pyridine-Carboxamide Ligands
AU - Menendez Rodriguez, Gabriel
AU - Domestici, Chiara
AU - Bucci, Alberto
AU - Valentini, Massimiliano
AU - Zuccaccia, Cristiano
AU - Macchioni, Alceo
N1 - Funding Information:
This work was financially supported by SABIC and Progetti di ricerca di Rilevante Interesse Nazionale (PRIN), 20154X9ATP_ 004.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/6/7
Y1 - 2018/6/7
N2 - 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.
AB - 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.
KW - Dehydrogenation
KW - H production
KW - Homogeneous catalysis
KW - Iridium
UR - http://www.scopus.com/inward/record.url?scp=85048042068&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048042068&partnerID=8YFLogxK
U2 - 10.1002/ejic.201701458
DO - 10.1002/ejic.201701458
M3 - Article
AN - SCOPUS:85048042068
SN - 1434-1948
VL - 2018
SP - 2247
EP - 2250
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 20
ER -