Wang Jingjing, Yao Yang-Rong, Yang Shaoting, Zhou Xinyi, Yu Ao, Peng Ping, Li Fang-Fang
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA.
Nanomaterials (Basel). 2022 Apr 12;12(8):1314. doi: 10.3390/nano12081314.
Taking into account the diversity of fullerene ligands and metal salts, metal-fullerene frameworks (MFFs) present a variety of structures. Currently, the structural control of MFFs mainly relies on the design and synthesis of fullerene ligands, while the influence of metal building units on the structures has been rarely studied. The present work represents a systematical investigation of fullerene-linked supramolecular architectures incorporating different metal salts. Treatment of a bidentate N,N-donors fullerene ligand () with six metal salts ([Zn(NO)·6HO, Cd(NO)·4HO, Cu(NO)·3HO, Cu(OAc)·HO, FeCl·4HO and FeCl·6HO]) produced six one-dimensional MFFs, i.e., Zn(NO)(HO) (), Cd(NO) (), Cu()(HO)(NO) (), Cu(OAc)(CHO) (), FeCl () and FeCl(FeCl) (). Compounds , built with nitrates with different metal centers (M(NO), M = Zn, Cd, Cu), present a 1D stair-like, 1D zigzag, and 1D linear chain structure, respectively. Compound , synthesized with another Cu(II) salt, Cu(OAc), displays a dinuclear Cu-Cu connected 1D stair-like chain structure, rather than the single Cu linked 1D linear chain obtained from Cu(NO). Compounds and , assembled from iron chloride of different oxidation states (Fe(II)Cl and Fe(III)Cl) reveal a 1D zigzag and a 1D stair-like chain structure, respectively. The results demonstrate the significant influences of metal salts on the structures of metal-fullerene frameworks.
考虑到富勒烯配体和金属盐的多样性，金属 - 富勒烯骨架（MFFs）呈现出多种结构。目前，MFFs的结构控制主要依赖于富勒烯配体的设计与合成，而金属构建单元对结构的影响鲜有研究。本工作对包含不同金属盐的富勒烯连接超分子结构进行了系统研究。用六种金属盐（[Zn(NO₃)₂·6H₂O、Cd(NO₃)₂·4H₂O、Cu(NO₃)₂·3H₂O、Cu(OAc)₂·H₂O、FeCl₂·4H₂O和FeCl₃·6H₂O]）处理双齿N，N - 给体富勒烯配体（），得到了六种一维MFFs，即Zn(NO₃)₂(H₂O)（）、Cd(NO₃)₂（）、Cu₂(NO₃)₂(H₂O)（）、Cu(OAc)₂(C₂H₅OH)（）、FeCl₂（）和FeCl₃(FeCl₂)（）。由具有不同金属中心的硝酸盐（M(NO₃)₂，M = Zn、Cd、Cu）构建的化合物，分别呈现出一维阶梯状、一维锯齿状和一维线性链结构。用另一种铜（II）盐Cu(OAc)₂合成的化合物，显示出双核Cu - Cu连接的一维阶梯状链结构，而不是由Cu(NO₃)₂得到的单Cu连接的一维线性链。由不同氧化态的氯化铁（Fe(II)Cl₂和Fe(III)Cl₃）组装而成的化合物和，分别呈现出一维锯齿状和一维阶梯状链结构。结果表明金属盐对金属 - 富勒烯骨架的结构有显著影响。
