Deng Chenglong, Sun Cunfa, Wang Zhi, Tao Yunwen, Chen Yilin, Lin Jinqing, Luo Genggeng, Lin Bizhou, Sun Di, Zheng Lansun
Key Laboratory of Environmental Friendly Function Materials, Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P. R. China.
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
Angew Chem Int Ed Engl. 2020 Jul 27;59(31):12659-12663. doi: 10.1002/anie.202003143. Epub 2020 May 14.
The synthesis and structure of a giant 102-silver-atom nanocluster (NC) 1 is presented. X-ray structural analysis reveals that 1 features a multi-shelled metallic core of Ag @Ag @Ag @Ag . An octahedral Ag core is encaged by a truncated octahedral Ag shell. The Ag shell is composed of a hitherto unknown sodalite-type silver orthophosphate cluster (SOC) {(Ag PO ) }, reminiscent of the Ag PO photocatalyst. The SOC is capped by six interstitial sulfur atoms, giving a unique anionic cluster [Ag @{(Ag PO ) }S ] , which functions as an intricate polyhedral template with abundant surface O and S atoms guiding the formation of a rare rhombicosidodecahedral Ag shell. An array of 6 linear Ag staples further surround this Ag shell. [Ag @{(Ag PO ) }S ] is an unusual Ag-based templating anion to induce the assembly of a SOC within silver NC. This finding provides molecular models for bulk Ag PO , and offers a fresh template strategy for the synthesis of silver NCs with high symmetry.
本文介绍了一种由102个银原子构成的巨型纳米团簇（NC）1的合成与结构。X射线结构分析表明，1具有Ag@Ag@Ag@Ag的多壳层金属核。一个八面体Ag核被一个截顶八面体Ag壳所包围。Ag壳由一种迄今未知的方钠石型磷酸银簇（SOC）{(AgPO)}组成，让人联想到AgPO光催化剂。SOC由六个间隙硫原子封端，形成独特的阴离子簇[Ag@{(AgPO)}S]，它作为一个复杂的多面体模板，具有丰富的表面O和S原子，引导形成罕见的菱形十二面体Ag壳。一系列6个线性Ag钉进一步围绕这个Ag壳。[Ag@{(AgPO)}S]是一种不寻常的基于Ag的模板阴离子，可诱导SOC在银纳米团簇内组装。这一发现为块状AgPO提供了分子模型，并为合成具有高对称性的银纳米团簇提供了一种新的模板策略。
