Zhu Yu, Zhang Lei, Zhang Jian
State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , P. R. China . Email:
Chem Sci. 2019 Aug 12;10(39):9125-9129. doi: 10.1039/c9sc02503k. eCollection 2019 Oct 21.
A series of unprecedented high-nuclearity tin-oxo nanoclusters (up to ) with structural diversity have been obtained. The characteristics of the applied solvents had great influence on the assembly of these Sn-O clusters. Pure alcohol environments only gave rise to small clusters of , whilst the introduction of water significantly increased the nuclearity to , which greatly exceeds those of the known tin-oxo clusters (≤14); the use of aprotic CHCN finally produced the largest to date. Apart from the nuclearity breakthrough, the obtained tin-oxo clusters also present new structural types that are not found in previous reports, including a layered nanorod-like structure of and the cage-dimer structure of . The layered clusters represent good molecular models for SnO materials. Moreover, an electrode derived from with a { } core shows better electrocatalytic CO reduction activity than that from with . This work not only provides an efficient methodology for the rational assembly of high-nuclearity Sn-O clusters, but also extends their potential applications in energy conversion.
已经获得了一系列具有结构多样性的前所未有的高核数锡氧纳米团簇（核数高达 ）。所用溶剂的特性对这些锡氧团簇的组装有很大影响。纯醇环境仅产生 的小团簇，而水的引入显著增加核数至 ，这大大超过了已知锡氧团簇的核数（≤14）；使用非质子性的CHCN最终产生了迄今为止最大的 。除了核数突破外，所获得的锡氧团簇还呈现出先前报道中未发现的新结构类型，包括 的层状纳米棒状结构和 的笼状二聚体结构。层状 团簇是SnO材料的良好分子模型。此外，由具有{ }核的 衍生的电极显示出比由具有 的 衍生的电极更好的电催化CO还原活性。这项工作不仅为高核数锡氧团簇的合理组装提供了一种有效方法，还扩展了它们在能量转换中的潜在应用。
