Square‐Planar Anionic Pt<sup>0</sup>Complexes
Hajime Kameo, Yudai Tanaka, Yoshihiro Shimoyama, Daisuke Izumi, Hiroyuki Matsuzaka, Yumiko Nakajima, Pierre Lavedan, Arnaud Le Gac, Didier Bourissou
Abstract
Abstract A T‐shaped Pt 0 complex with a diphosphine‐borane (DPB) ligand was prepared. The Pt→B interaction enhances the electrophilicity of the metal and triggers the addition of Lewis bases to give the corresponding tetracoordinate complexes. For the first time, anionic Pt 0 complexes are isolated and structurally authenticated. X‐ray diffraction analyses show the anionic complexes [(DPB)PtX] − (X=CN, Cl, Br, I) to be square‐planar. The d 10 configuration and Pt 0 oxidation state of the metal were unambiguously established by X‐ray photoelectron spectroscopy and DFT calculations. The coordination of Lewis acids as Z‐type ligands is a powerful mean to stabilize elusive electron‐rich metal complexes and achieve uncommon geometry.