Department Chemie, Technische Universität München Lichtenbergstraße 4, 85747 Garching, Germany.
Chem Commun (Camb). 2019 Oct 8;55(81):12156-12159. doi: 10.1039/c9cc06388a.
Homoatomic cluster aggregation is a versatile route to build up atom-precise nano structures. In this work we describe the first connection of four Ge9 clusters to a single atom: in K6[Zn{η1-Ge9(Hyp)2}4]·10.5 Tol four bis-silylated Ge9 clusters are linked via one central Zn atom. Furthermore we report on the bare Ge9 cluster in (NH3)3Zn-Ge9-Zn(NH3)3·11NH3, which reveals two possible connectivity sites due to the NH3 leaving groups at the Zn atoms. Both complexes can be regarded as analogue building motifs for hypothetical tetrel element structures anticipated before with Zn atoms taking the role of four-connected tetrel atoms.
同原子簇聚集是构建原子精确纳米结构的一种通用方法。在这项工作中，我们描述了将四个 Ge9 簇连接到单个原子上的首例连接：在 K6[Zn{η1-Ge9(Hyp)2}4]·10.5 Tol 中，通过一个中心 Zn 原子将两个双硅化 Ge9 簇连接起来。此外，我们还报告了在 (NH3)3Zn-Ge9-Zn(NH3)3·11NH3 中裸露的 Ge9 簇，由于 Zn 原子上的 NH3 离去基团，该簇显示出两个可能的连接位点。这两个配合物都可以被视为预期的假想四配位拟卤元素结构的类似物构建基元，其中 Zn 原子扮演四配位拟卤原子的角色。
