近乎完美的半立方体和立方体形状的面心立方银纳米簇的胚胎生长。
Embryonic Growth of Face-Center-Cubic Silver Nanoclusters Shaped in Nearly Perfect Half-Cubes and Cubes.
机构信息
State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Engineering Research Center for Nano-Preparation Technology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
Departments of Physics and Chemistry, Nanoscience Center, University of Jyväskylä , FI-40014 Jyväskylä, Finland.
出版信息
J Am Chem Soc. 2017 Jan 11;139(1):31-34. doi: 10.1021/jacs.6b10053. Epub 2016 Dec 23.
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 [Ag(SPhF)(PPh)] (1). The metal frameworks of [Ag(SPhF)(PR')] (2) and [Ag(SPhF)(PR')] (2), where HSPhF = 3,4-difluorothiophenol and R' = alkyl/aryl, are composed of 2 × 2 = 4 and 2 × 2 × 2 = 8 metal cubes of 1, 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 of 1, 2, and 2, we predict the next "cube of cubes" to be Ag(SR)(PR')] (3), in the evolution of growth of this cluster sequence.
本文展示了通过配体控制（在此情况下为硫醇盐和膦）从 Nichol 立方块到 Rubik 立方块及其他立方块的 FCC 银纳米团簇的制备和晶体学表征。基本构建块是我们之前报道的 FCC 团簇 [Ag(SPhF)(PPh)]（1）。[Ag(SPhF)(PR')]（2）和 [Ag(SPhF)(PR')]（2）的金属框架由 2×2=4 和 2×2×2=8 个 1 的金属立方块组成，其中 HSPhF=3,4-二氟噻吩和 R'=烷基/芳基。所有串联团簇都具有相似的表面结构特征。硫醇配体覆盖立方块（或半立方块）的六个面和十二条边，而膦配体则键合在其八个角上。基于对 1、2 和 2 的晶体结构的分析，我们预测下一个“立方块的立方块”将是 Ag(SR)(PR')]（3），这是该团簇序列生长的演变。
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