The N,Nâ²-dimesitylene substituted o-phenylenediamine 1 reacts with Sn[N(SiMe3)2]2 under formation of the monomeric N-heterocyclic stannylene 2, while the chiral N,Nâ²-substituted o-phenylenediamine 3 reacts with E[N(SiMe3)2]2 (E = Ge, Sn) under formation of the chiral germylene 4 and the chiral stannylene 5, respectively. X-Ray diffraction studies with both stannylenes demonstrated that the metal centers in these compounds are sufficiently sterically protected to prevent interaction between the tin center and the nitrogen donors of adjacent molecules.
N,N-二亚甲基取代的
邻苯二胺 1 与 Sn[N(SiMe3)2]2 反应形成单体 N-杂环亚
锡基 2,而手性 N,N-取代的
邻苯二胺 3 发生反应与 E[N(SiMe3)2]2 (E = Ge, Sn) 分别形成手性亚甲
锗烷基 4 和手性亚甲
锡 5。对两种亚
锡锡的 X 射线衍射研究表明,这些化合物中的
金属中心受到充分的空间保护,以防止
锡中心与相邻分子的氮供体之间的相互作用。