A neutral, acyclic, borataalkene-like ligand for group 11 metals: L- and Z-type ligands side by side

Felix Krämer; Michael Radius; Helga Berberich; Israel Fernández; Frank Breher

doi:10.1039/d2cc00199c

A neutral, acyclic, borataalkene-like ligand for group 11 metals: L- and Z-type ligands side by side

Chem Commun (Camb). 2022 Mar 22;58(24):3905-3908. doi: 10.1039/d2cc00199c.

Authors

Felix Krämer¹, Michael Radius¹, Helga Berberich¹, Israel Fernández², Frank Breher¹

Affiliations

¹ Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, Karlsruhe 76131, Germany. [email protected].
² Departamento de Química Orgánica I, Facultad de Ciencias Químicas and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad Complutense de Madrid, Madrid 28040, Spain. [email protected].

PMID: 35237782
DOI: 10.1039/d2cc00199c

Abstract

The overall neutral α-borylated phosphorus ylide Ph₃PC(Me)BEt₂ behaves like a polar borataalkene and can act as acyclic, ambiphilic π-type ligand with L- and Z-type functionalities side by side. In the complexes [MX{η²-Ph₃PC(Me)BEt₂}] (M = Cu, (Ag), Au; X = Cl, NTf₂), the bonding is dominated by the highly nucleophilic ylidic carbon atom (L-type ligand). The Lewis acidic boron atom furnishes nonetheless a small but significant bonding contribution (Z-type ligand).