Chiu Tzu-Hao, Liao Jian-Hong, Gam Franck, Chantrenne Isaac, Kahlal Samia, Saillard Jean-Yves, Liu C W
Department of Chemistry , National Dong Hwa University , Hualien , Taiwan , R. O. C.
CNRS, ISCR-UMR 6226 , Université Rennes , F-35000 Rennes , France.
J Am Chem Soc. 2019 Aug 21;141(33):12957-12961. doi: 10.1021/jacs.9b05000. Epub 2019 Aug 7.
Three bimetallic platinum/silver nanoclusters, PtAg(dtp) (), PtAg(dtp) (), and PtAg(dtp) () (dtp: dipropyl dithiophosphate), with cluster electron counts of 8, 16, and 22, respectively, were produced via a one-phase coreduction method. Single-crystal X-ray structures reveal that their inner cores can be visualized as consisting of one, two, and three centered icosahedral Pt@Ag units, respectively. In and , these units are vertex-sharing and are assembled linearly. Intriguingly, the 22-electron alloy () is isolobal to the linear triiodide anion, I, and represents the first example of a cluster made of three superatoms whose bonding characteristics are similar to those of a triatomic molecular species.
通过单相共还原法制备了三种双金属铂/银纳米团簇，分别为PtAg(dtp)（）、PtAg(dtp)（）和PtAg(dtp)（）（dtp：二丙基二硫代磷酸酯），其团簇电子数分别为8、16和22。单晶X射线结构表明，它们的内核可分别视为由一个、两个和三个中心二十面体Pt@Ag单元组成。在 和 中，这些单元通过顶点共享并线性组装。有趣的是，22电子合金（）与线性三碘阴离子I等瓣，并且代表了由三个超原子组成的团簇的首个例子，其键合特征类似于三原子分子物种的键合特征。
