The tridentate ligand CH(SiMe2NHMe)3 has been prepared. It can only be doubly metallated by LiR. Attempts to prepare N(SiMe2NHR)3 from N(SiMe2Cl)3 and RNH2 (R = Me, Et, i-Pr) afforded only cyclodisilazanes HNRSiMe2N(SiMe2)2NR. These rearrange in the course of their reaction with LiC4H9 to give cyclotrisilazane derivatives LiN(SiMe2NR)2SiMe2. The ring expansion proceeds at room temperature by an anionic
已经制备了三齿
配体CH(SiMe 2 NHMe)3。它只能被LiR双重
金属化。尝试由N(SiMe 2 Cl)3和RNH 2(R = Me,Et,i-Pr)制备N(SiMe 2 NHR)3,仅得到环二
硅氮烷HNRSiMe 2 N(SiMe 2)2 NR。它们在与LiC 4 H 9反应的过程中重排,得到环三
硅氮烷衍
生物LiN(SiMe 2 NR)2 SiMe 2。环膨胀在室温下通过阴离子机理进行,并且如果仅添加催化量的LiC 4 H 9则未观察到。