Unprecedented W2(0) quadruply bonded complex supported by π-donor ligands†
Abstract
A quadruply bonded complex W2(DippF)2K2 with a W2(0) core was synthesized and structurally characterized. The observed W–W distance of 2.407(1) Å and DFT calculations are consistent to the unprecedented electronic structure in D2h symmetry of σ2π2π2δ2 δ2δ*2 where the HOMO is the δ* orbital.