A Genuine Stannylone with a Monoatomic Two‐Coordinate Tin(0) Atom Supported by a Bis(silylene) Ligand

The bis(N-heterocyclic silylene)-stabilized stannylone with a two-coordinate Sn0 atom and its bis-Fe(CO)4 complex have been synthesized and structurally characterized by NMR spectroscopy and X-ray crystallography. Their bonding situations have been uncovered by density functional theory calculations, indicating a genuine stannylone character with two lone pairs of electrons at the tin atom.