Iridium(I)/N-Heterocyclic Carbene Hybrid Materials: Surface Stabilization of Low-Valent Iridium Species for High Catalytic Hydrogenation Performance

Angewandte Chemie
Iuliia RomanenkoChloé Thieuleux

Abstract

An Ir(I) (NHC)-based hybrid material was prepared using a methodology which allowed the precise positioning and isolation of the Ir centers along the pore channels of a silica framework. The full characterization of the material by solid-state NMR spectroscopy showed that the supported Ir sites were stabilized by the silica surface, as low-coordinated single-site complexes. The material is extremely efficient for the hydrogenation of functional alkenes. The catalytic performance (TOF and TON) is one to two orders of magnitude higher than those of their molecular Ir analogues, and could be related to the prevention of the bimolecular deactivation of Ir complexes observed under homogeneous conditions.

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Citations

Jul 12, 2016·Chemical Reviews·Christophe CopéretKeith Searles
Dec 21, 2016·Journal of the American Chemical Society·Pierrick BerruyerLyndon Emsley
Jan 14, 2017·Chemical Reviews·Rui ZhongFritz E Kühn
Apr 4, 2017·Journal of Magnetic Resonance·Daniel LeeGaël De Paëpe
Sep 25, 2017·Chemistry : a European Journal·Iuliia RomanenkoChloé Thieuleux
Sep 27, 2018·Chemical Society Reviews·Manoja K SamantarayJean-Marie Basset
Feb 9, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Marc Renom-CarrascoChloé Thieuleux
Nov 12, 2019·Chemistry : a European Journal·Monojit Das BairagyaNoémie Elgrishi
Jun 13, 2019·Solid State Nuclear Magnetic Resonance·Andrew G M RankinOlivier Lafon
Nov 12, 2019·Journal of the American Chemical Society·Sébastien LassalleClément Camp
Feb 27, 2018·Analytical Chemistry·Bertrand PlainchontPatrick Giraudeau
Jun 29, 2017·Journal of the American Chemical Society·Christophe CopéretTa-Chung Ong

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