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• Synthesis

  Bis(trimethylsilyl)sulfide can be prepared in one step from Li₂S and TMS chloride. The specific steps are as follows: TMS chloride (50.8 mL, 0.40 mol) is added to a magnetically stirred suspension of anhydrous Li₂S (9.19 g, 0.20 mol) in anhydrous THF (40 mL). The mixture is stirred under dry argon for 25 hours. GC analysis of aliquots of the supernatant at this time shows bis(trimethylsilyl)sulfide (87%), siloxane (4.1%), and unreacted TMS chloride (9.2%). A small Vigreaux column with a vacuum jacket is fitted to the reaction flask, and THF is removed by distillation under argon. The pressure is then reduced, and after a short pre-distillation, the bis(trimethylsilyl)sulfide is collected as a clear, colorless liquid (29.7 g, 83%).

  
  
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