Convergence of Mechanistic Pathways

Although indirect, all of the available data are consistent with structure E)-205 (a hydrogen-bonded complex between an organosilanol and TBAF) as the best fit for the reaction component in question. Subsequent kinetic analyses discussed in the following section reveal the role of this intermediate in the cross-coupling pathway. 

These mechanistic studies disproved the rationale for the ability of siletanes to couple so mildly, and they uncovered an unexpected intermediate in the reaction pathway. 

Most significant, however, is that the observation of a common intermediate among silanol, disiloxane, and fluorosilane cross-coupling reactions signifies that these systems, which encompass the vast majority of documented organosilicon cross-coupling systems to date, likely react according to a common mechanism. 

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