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Bond-strengthening p backdonation in a transition-metal p-diborene complex

journal contribution
posted on 2023-06-08, 15:41 authored by Holger Braunschweig, Alexander Damme, Rian D Dewhurst, Alfredo VargasAlfredo Vargas
Transition-metal catalysis is founded on the principle that electron donation from a metal to a ligand is accepted by an antibonding orbital of the ligand, thereby weakening one of the bonds in the ligand. Without this, the initial step of bond activation in many catalytic processes would simply not occur. This concept is enshrined in the well-accepted Dewar–Chatt–Duncanson model of transition-metal bonding. We present herein experimental and computational evidence for the first true violation of the Dewar–Chatt–Duncanson bonding model, found in a p-diborene complex in which an electron-rich group 10 metal donates electrons into an empty bonding p orbital on the ligand, and thereby strengthens the bond. The complex is also the first transition-metal complex to contain a bound diborene, a species not isolated before, either in its free form or bound to a metal.

History

Publication status

  • Published

Journal

Nature Chemistry

ISSN

1755-4330

Publisher

Nature Publishing Group

Volume

5

Page range

115-121

Department affiliated with

  • Chemistry Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2013-09-12

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