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Unsupported boron–carbon s-coordination to platinum as an isolable snapshot of s-bond activation
journal contribution
posted on 2023-06-08, 15:41 authored by Holger Braunschweig, Peter Brenner, Rian D Dewhurst, Ivo Krummenacher, Bernd Pfaffinger, Alfredo VargasAlfredo Vargass-Complexes of transition metals—key intermediates in metal-mediated bond activation and homogeneous catalysis—have traditionally been isolable only when chelating or when one of the participating atoms is hydrogen. Here, by treating the Lewis-basic transition metal complex [Pt(PEt3)4] with an electron-poor borirene, we isolate a complex with an unsupported borirene ligand bound, not through the unsaturated C=C bond, but exclusively via a B–C single bond. Using NMR spectroscopy, X-ray crystallography and density functional theory calculations, we show, herein, that coordination of the borirene ligand is based on electron donation from the B–C s bond to the metal, aided by a strong Pt-to-B dative interaction. The complex is the first isolable non-agostic s-complex featuring two p-block elements and has broad implications as a model for the metal-mediated activation of strong p-block-p-block s-bonds.
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Publication status
- Published
Journal
Nature CommunicationsISSN
2041-1723Publisher
Nature Publishing GroupExternal DOI
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872Volume
3Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2013-09-12Usage metrics
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