We have been investigating the synthesis of diazomethylgold and ketenylidene trigold clusters as potential synthons for new gold carbide clusters. The reaction of trimethylsilyldiazomethane with suitable gold(I) precursors affords either a diazomethylgold complex by desilylation, or a trimethylsilyldiazogold complex by deprotonation. The reaction of these mononuclear synthons with electrophilic gold precursors leads to dinitrogen loss. We have also synthesized a stable, well-defined trigold ketenylidene cation, which may be viewed as a triaurated acetylium ion.  The structure and reactivity of this cation suggests considerable stabilization of the acylium fragment by the gold-carbon bonds, but its reactivity with nucleophiles and electrophiles will be presented. These complexes are potential synthons for open-shell carbides.

Gold diazomethyl and gold ketenylidene clusters: Reactive carbide precursors?

250th National Meeting (2015)

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