Hydrogenolysis of Polysilanes Catalyzed by Low-Valent Nickel Complexes

Bruno Pribanic; Monica Trincado; Frederik Eiler; Matthias Vogt; Aleix Comas-Vives; Hansjörg Grützmacher

doi:10.1002/anie.201907525

Hydrogenolysis of Polysilanes Catalyzed by Low-Valent Nickel Complexes

Angew Chem Int Ed Engl. 2020 Sep 1;59(36):15603-15609. doi: 10.1002/anie.201907525. Epub 2020 Apr 14.

Authors

Bruno Pribanic¹, Monica Trincado¹, Frederik Eiler¹, Matthias Vogt², Aleix Comas-Vives³, Hansjörg Grützmacher¹

Affiliations

¹ Department of Chemistry and Applied Biosciences, ETH Zürich, 8093, Zürich, Switzerland.
² Universität Bremen, Fachbereich 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Leobenerstr. 7, 28359, Bremen, Germany.
³ Chemistry Department, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Bellaterra, Catalonia, Spain.

PMID: 32049402
DOI: 10.1002/anie.201907525

Abstract

The dehydrogenation of organosilanes (R_x SiH_4-x ) under the formation of Si-Si bonds is an intensively investigated process leading to oligo- or polysilanes. The reverse reaction is little studied. To date, the hydrogenolysis of Si-Si bonds requires very harsh conditions and is very unselective, leading to multiple side products. Herein, we describe a new catalytic hydrogenation of oligo- and polysilanes that is highly selective and proceeds under mild conditions. New low-valent nickel hydride complexes are used as catalysts and secondary silanes, RR'SiH₂ , are obtained as products in high purity.

Keywords: hydrogenolysis; hydrosilanes; nickel hydrides; polysilanes; silane complexes.

Abstract

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