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Disc-Like Silver Nanocluster Ag93 Built with Bicapped Hexagonal Prismatic Ag15 and Ino Decahedral Ag13 Units |
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| Authors: | Dr Feng Hu Rui-Lin He Dr Zong-Jie Guan Dr Chun-Yu Liu Prof?Dr Quan-Ming Wang |
| Institution: | 1. Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing, 100084 P.R. China
These authors contributed equally to this work.;2. Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing, 100084 P.R. China |
| Abstract: | The reduction of alkynyl-silver and phosphine-silver precursors with a weak reducing reagent Ph2SiH2 led to the formation of a novel silver nanocluster Ag93(PPh3)6(C≡CR)50]3+ (R=4-CH3OC6H4), which is the largest structurally characterized cluster of clusters. This disc-shaped cluster has a Ag69 kernel consisting of a bicapped hexagonal prismatic Ag15 unit wrapped by six Ino decahedra through edge-sharing. This is the first time that Ino decahedra are used as a building block to assemble a cluster of clusters. Moreover, the central silver atom has a coordination number of 14, which is the highest in metal nanoclusters. This work provides a diverse metal packing pattern in metal nanoclusters, which is helpful for understanding metal cluster assembling mechanisms. |
| Keywords: | Alkynyl Ligands Coordination Number Optical Properties Phosphine Silver Nanocluster |