The diverse reactions of the silylene Si[(NCH2But)(2)C6H4-1,2] with Li[Si(SiMe3)(3)](thf)(3) and K[N(SiMe3)(2)]

The silylene Si[(NCH2But)(2)C6H4-1,2] 1 inserts into the Li-Si bond of Li[S i(SiMe3)(3)](thf)(3) to afford the new silyllithium compound Li[(1)Si(SiMe3 )(3)](thf)(2) 2, whereas 1 with K[N(SiMe3)(2)] yields the amidopotassium co mpound K[N(SiMe3){(1)(SiMe3)}](thf)(x) [x = 0 (3a) or 3 (3b)]; the X-ray st ructures of the crystalline mononuclear complex 2 and the polymeric aggrega te 3a are reported, and NMR spectra show that in solution 2 is in equilibri um with its factors.