A Route to a Germanium-Carbon Triple Bond: First Chemical Evidence for a Germyne

Abstract

Photolysis of a diazogermylene generates a germylene-carbene species, a resonance form of a germyne. Support for the intermediacy of the triply bonded form in the trapping reaction with an alcohol is provided by the fact that the diazo precursor does not behave as a germylene and that its photolysis product does not react with carbene traps such as 2,3-dimethylbutadiene. Hence, this is the first chemical evidence for a germyne. Ar=2,6-(iPr₂ NCH₂ )₂ C₆ H₃ ; R=Me, tBu.