Zhang Yuteng, Gan Hongmei, Qin Chao, Wang Xinlong, Su Zhongmin, Zaworotko Michael J
National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University , Changchun , Jilin 130024 , China.
Bernal Institute, Department of Chemical Sciences , University of Limerick , Limerick V94 T9PX , Republic of Ireland.
J Am Chem Soc. 2018 Dec 19;140(50):17365-17368. doi: 10.1021/jacs.8b10866. Epub 2018 Nov 21.
Nanoscale regular polyhedra with icosahedral symmetry exist naturally as exemplified by virus capsids and fullerenes. Nevertheless, their generation by supramolecular chemistry through the linking of 5-fold symmetry vertices remains unmet because of the absence of 5-fold symmetry building blocks with the requisite geometric features. This situation contrasts with that of tetrahedral and octahedral symmetry metal-organic polyhedra (MOPs), for which appropriate triangular and square molecular building blocks (MBBs) that can serve as vertices or faces are readily available. Herein, we report isolation of a pentagonal [WVO(SO)] cluster and reveal its utility to afford the first four examples of nanoscale Goldberg MOPs, based upon 5-fold MBBs. Two 32-faced G (1,1) MOPs and two 42-faced G (2,0) MOPs were formed using linear or triangular organic ligands, respectively. The largest Goldberg MOP-4, exhibits a diameter of 4.3 nm, can trap fullerene C molecules in its interstitial cavities.
具有二十面体对称性的纳米级规则多面体自然存在，病毒衣壳和富勒烯就是例证。然而，由于缺乏具有所需几何特征的五重对称构建块，通过超分子化学将五重对称顶点连接起来生成它们的目标仍未实现。这种情况与四面体和八面体对称的金属有机多面体（MOPs）形成对比，对于后者，可作为顶点或面的合适三角形和方形分子构建块（MBBs）很容易获得。在此，我们报告了一种五角形[WVO(SO)]簇的分离，并揭示了其基于五重MBBs提供纳米级戈德堡MOPs的前四个实例的效用。分别使用线性或三角形有机配体形成了两个32面的G(1,1) MOPs和两个42面的G(2,0) MOPs。最大的戈德堡MOP-4直径为4.3纳米，能够在其间隙空腔中捕获富勒烯C分子。
