Related Experiment Video
Updated: May 2, 2026
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Structurally Constrained Stibenium: Metallomimetic C-Si Bond Activation
Donia Toami1, Roman Dobrovetsky1
1School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel.
None:
The chemistry of structurally constrained pnictogen centers continues to attract interest within the field of metallomimetic main-group catalysis. Herein, we report a structurally constrained stibenium cation [1]+ supported by a 2,6-bis(o-carborano)pyridine pincer-type ligand. This unique Sb-based cation exhibits an unprecedented ability to activate the Si-C bonds via oxidative addition not only in hydrosilanes but also in otherwise unreactive tetraalkylsilanes. This remarkable reactivity of [1]+ enables its application as a catalyst for silane redistribution under mild conditions. Experimental and density functional theory (DFT) mechanistic studies of this catalysis suggest that [1]+ operates in a metallomimetic fashion, involving key steps commonly associated with transition-metal catalysis.
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