摘要:
Reaction of the imine ArNC(SiMe3)(2) (1; Ar = 2,6-iPr(2)C(6)H(3)) with LiAlH4 in THF resulted in the formation of the dimeric hydroaluminate [(THF)(2)LiH3AlL](2) (2; L = [ArNCH(SiMe3)(2)](-)). 2 reacted with CH3I to give the monomeric aluminum dihydride LAlH2(THF) (3), which can be converted to the diiodide LAlI2(THF) (4) upon treatment with 2 equiv of Me3SiI. The quasi two-coordinate lithium amide Li(OEt2)L (8) with an intramolecular CH-Li interaction was obtained by the deprotonation of the corresponding amine LH (5) generated from hydrolysis of 2. Reduction of 1 with lithium in THF resulted in the first structurally characterized monomeric C-N vicinal dianion, Li-2(THF)(3)[ArNC(SiMe3)(2)] (6), and the monomeric lithium amide Li(THF)(2)L (7).