Embryonic Growth of Face-Center-Cubic Silver Nanoclusters Shaped in Nearly Perfect Half-Cubes and Cubes
Embryonic Growth of Face-Center-Cubic Silver Nanoclusters Shaped in Nearly Perfect Half-Cubes and Cubes
复制标题
近乎完美的半立方体和立方体面心立方银纳米团簇的胚胎生长
DOI：
10.1021/jacs.6b10053
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发表时间：
2017
影响因子：
15
通讯作者：
Zheng Nanfeng
中科院分区：
文献类型：
--
作者：
Yang Huayan;Yan Juanzhu;Wang Yu;Su Haifeng;Gell Lars;Zhao Xiaojing;Xu Chaofa;Teo Boon K.;Hakkinen Hannu;Zheng Nanfeng
本文展示的是经由配体控制（在这种情况下为硫醇盐和膦）的fcc银纳米团簇家族从Nichol立方体到Rubik立方体以及更远的制备和晶体学表征。基本的结构单元是我们以前报道的fcc簇[Ag 14（SPhF 2）12（PPh 3）8]（1）。[Ag 38（SPhF 2）26（PR′3）8]（22）和[Ag 63（SPhF 2）36（PR′3）8]+（23）（其中HSPhF 2 = 3，4-二氟苯硫酚，R′ =烷基/芳基）的金属骨架分别由2 × 2 = 4和2 × 2 × 2 = 8个1的金属立方体组成。所有系列集群共享相似的表面结构特征。硫醇盐配体覆盖立方体（或半立方体）的六个面和12个边，而膦配体末端键合到其八个角。在对1、22和23的晶体结构分析的基础上，我们预测了在该簇合物序列的生长演化过程中，下一个“立方体中的立方体”是Ag 172（SR）72（PR′3）8]（33）。
Demonstrated herein are the preparation and crystallographic characterization of the family of fcc silver nanoclusters from Nichol’s cube to Rubik’s cube and beyond via ligand-control (thiolates and phosphines in this case). The basic building block is our previously reported fcc cluster [Ag14(SPhF2)12(PPh3)8] (1). The metal frameworks of [Ag38(SPhF2)26(PR′3)8](22) and [Ag63(SPhF2)36(PR′3)8]+(23), where HSPhF2= 3,4-difluorothiophenol and R′ = alkyl/aryl, are composed of 2 × 2 = 4 and 2 × 2 × 2 = 8 metal cubes of1, respectively. All serial clusters share similar surface structural features. The thiolate ligands cap the six faces and the 12 edges of the cube (or half cube) while the phosphine ligands are terminally bonded to its eight corners. On the basis of the analysis of the crystal structures of1,22, and23, we predict the next “cube of cubes” to be Ag172(SR)72(PR′3)8] (33), in the evolution of growth of this cluster sequence.