[Benzyl­bis­(di­methyl­amino)­methyl­silyl‐κ2C,N](N,N,N′,N′‐tetra­methyl­ethyl­ene­di­amine‐κ2N,N)­lithium(I)

The title compound, Li(C₁₂H₂₁NSi)(C₆H₁₆N₂)], is an intermediate in the synthesis of the corresponding organometallic compounds. The mol­ecule has an unusual C—Si—N—Li four‐membered heterocycle which adopts a folded conformation, with the coordination around the Li, N, C and Si atoms being distorted tetrahedral. Its structure is strongly supported by ¹H NMR, ¹³C NMR and ¹³C–¹H correlation spectra. The compound has potential for application in the synthesis of other novel organometallic compounds.