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Copper-Ligand Cooperativity in H$_2$ Activation Enables the Synthesis of Copper Hydride Complexes

Alicia Aloisi 1 Étienne Crochet 1 Emmanuel Nicolas 1 Jean-Claude Berthet 1 Camille Lescot 1 Pierre Thuéry 1 Thibault Cantat 1, *
* Corresponding author
1 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Copper(I) complexes of a new participative triphosphane ligand (2 H) have been prepared and structurally characterized, in particular [Cu(2 H)I] and [Cu(2)]2. Hydrogenation of the latter species afforded the trimetallic hydride species [Cu3(2)2(µ-H)] or in the presence of BEt3, [Cu(2 H)(HBEt3)]. Their formation evidences transient formation of [Cu(2 H)H] formed by hydrogenolysis of the Cu-N bond of [Cu(2)]2. [Cu(2 H)(HBEt3)] behaves like a hydride complex and inserts CO2 to yield the formate product [Cu(2 H)(O2CH)]. QTAIM analysis of the Cu-H-BEt3 interaction indicates a hydride complex stabilized by the Lewis acid BEt3.
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https://hal-cea.archives-ouvertes.fr/cea-03132894
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Submitted on : Friday, February 5, 2021 - 2:47:33 PM
Last modification on : Monday, June 14, 2021 - 10:03:07 AM
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Alicia Aloisi, Étienne Crochet, Emmanuel Nicolas, Jean-Claude Berthet, Camille Lescot, et al.. Copper-Ligand Cooperativity in H$_2$ Activation Enables the Synthesis of Copper Hydride Complexes. 2021. ⟨cea-03132894⟩

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