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Copper–Ligand Cooperativity in H2 Activation Enables the Synthesis of Copper Hydride Complexes

preprint
submitted on 02.02.2021, 12:31 and posted on 03.02.2021, 09:48 by Alicia Aloisi, Etienne Crochet, Emmanuel Nicolas, Jean-Claude Berthet, Camille Lescot, Pierre Thuéry, Thibault Cantat
Copper(I) complexes of a new participative triphosphane ligand (2H) have been prepared and structurally characterized, in particular [Cu(2H)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(2H)(HBEt3)]. Their formation evidences transient formation of [Cu(2H)H] formed by hydrogenolysis of the Cu‒
N bond of [Cu(2)]2. [Cu(2H)(HBEt3)] behaves like a hydride complex and inserts CO2 to yield the formate product [Cu(2H)(O2CH)].

History

Email Address of Submitting Author

emmanuel.nicolas@cea.fr

Institution

Université Paris-Saclay, CEA, CNRS, NIMBE

Country

France

ORCID For Submitting Author

0000-0002-0017-5500

Declaration of Conflict of Interest

No conflict of interest

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