CO2 hydrogenation by phosphorus-nitrogen PN3P-pincer iridium hydride complexes: elucidation of the deactivation pathway

Yupeng Pan; Chao Guan; Huaifeng Li; Priyanka Chakraborty; Chunhui Zhou; Kuo-Wei Huang

doi:10.1039/c9dt01319a

CO₂ hydrogenation by phosphorus-nitrogen PN³P-pincer iridium hydride complexes: elucidation of the deactivation pathway

Dalton Trans. 2019 Sep 14;48(34):12812-12816. doi: 10.1039/c9dt01319a. Epub 2019 Aug 12.

Authors

Yupeng Pan¹, Chao Guan², Huaifeng Li², Priyanka Chakraborty², Chunhui Zhou², Kuo-Wei Huang²

Affiliations

¹ KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia. hkw@kaust.edu.sa and Shenzhen Grubbs Institute, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
² KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia. hkw@kaust.edu.sa.

PMID: 31402365
DOI: 10.1039/c9dt01319a

Abstract

PN³P-Ir pincer hydride complexes were synthesized and characterized as catalysts and key intermediates in the direct hydrogenation of CO₂ to formate under mild conditions. The formation of a dearomatized PN³P*-Ir(i)-CO species was identified as a plausible key process accountable for the loss of catalytic activity in the CO₂ hydrogenation.