Si−H Activation via Dynamic Permutational Isomerism: A Ligand‐Directed Route to Dehydrogenative Coupling

URN to cite this document:: urn:nbn:de:bvb:355-epub-779043
DOI to cite this document:: 10.5283/epub.77904

Kümper, Manuel ; Westermair, Franz F.

; Götz, Tobias ; Gschwind, Ruth M.

; Bauer, Jonathan O.

License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 02 Oct 2025 06:28

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Abstract

Dehydrogenative coupling (DHC) of hydridosilanes with silanols under metal-free conditions provides a sustainable route to Si─O bond formation. Yet, the mechanistic origin of hydrogen release in such systems has remained unclear. Here, we show that dynamic permutational isomerism of pentacoordinate silicon intermediates is a key prerequisite for Si─H activation and H2 release. Using sterically ...