Silyllithium, chlorosilane coupling with

Coupling of Halosilanes with Silyl Anions 467 Coupling of chlorosilane with silyllithium 467 Coupling of chlorosilane with silylpotassium 468 Coupling of chlorosilane with a silylmagnesium reagent 469... 

It has been reported that in reactions of silyllithium with chlorosilane, the products depend on the mode of addition (26,27), as shown by the following two examples Whereas addition of silyllithium to chlorosilane gives the desired cross-coupled disilane [Eq. (12)], addition of chlorosilane to silyllithium forms a mixture of homo-coupled disilanes [Eq. (13)]. 

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