Self-Reaction of Pentamethyldisilyl Radicals: Is Dimethylsilylene a Product

摘要

The self-reaction of the pentamethyldisilyl radical was investigated, in solution, at 298 K. Products due to the disproportionation and combination of these radicals were detected in a ratio < or = 0.48. However, there was no evidence for silylene formation. These results suggest that silylenes, which are formed during polysilane photolysis, are not produced from the self-reaction of polysilyl radicals but must be photo-extruded from the polysilane itself.