Volume 137, Issue 9 e202419537
Forschungsartikel

Harnessing Multi-Center-2-Electron Bonds for Carbene Metal-Hydride Nanocluster Catalysis

Quentin Pessemesse

Quentin Pessemesse

Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS., 1 rue Victor Grignard, Villeurbanne Cedex, France

These authors contributed equally

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Dr. Skyler D. Mendoza

Dr. Skyler D. Mendoza

Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA 92037 United States

These authors contributed equally

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Prof. Dr. Jesse L. Peltier

Prof. Dr. Jesse L. Peltier

UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 United States

Departments of Chemistry & Chemical Biology, and Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, MA 02115 United States

These authors contributed equally

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Elguja Gojiashvili

Elguja Gojiashvili

Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182 United States

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Dr. Anne K. Ravn

Dr. Anne K. Ravn

Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA 92037 United States

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Dr. Jan Lorkowski

Dr. Jan Lorkowski

UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 United States

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Dr. Milan Gembicky

Dr. Milan Gembicky

UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 United States

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Dr. Sourav S. Bera

Dr. Sourav S. Bera

Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA 92037 United States

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Dr. Pierre-Adrien Payard

Corresponding Author

Dr. Pierre-Adrien Payard

Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS., 1 rue Victor Grignard, Villeurbanne Cedex, France

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Prof. Dr. Keary M. Engle

Corresponding Author

Prof. Dr. Keary M. Engle

Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA 92037 United States

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Prof. Dr. Rodolphe Jazzar

Corresponding Author

Prof. Dr. Rodolphe Jazzar

UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093 United States

Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182 United States

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In memory of Prof. Douglas Grotjahn, whose passion for science and education will continue to inspire.
First published: 16 January 2025
Citations: 1

Abstract

N-Heterocyclic carbene (NHC) ligands possess the ability to stabilize metal-based nanomaterials for a broad range of applications. With respect to metal-hydride nanomaterials, however, carbenes are rare, which is surprising if one considers the importance of metal-hydride bonds across the chemical sciences. In this study, we introduce a bottom-up approach that leverages preexisting metal-metal m-center-n-electron (mc-ne) bonds to access a highly stable cyclic(alkyl)amino carbene (CAAC) copper-hydride nanocluster, [(CAAC)6Cu14H12][OTf]2 with superior stability compared to Stryker's reagent, a popular commercial phosphine-based copper hydride catalyst. Density functional theory (DFT) calculations reveal that the enhanced stability stems from hydride-to-ligand backbonding with the π-accepting carbene. This new cluster emerges as an efficient and selective copper-hydride pre-catalyst, thereby providing a bench-stable alternative for catalytic applications.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.