首页> 外文期刊>Inorganica Chimica Acta >Keggin polyoxometalates-supported assembly of 2D supramolecular isomers: Synthesis, crystal structures and characteristics of two novel hybrid host-guest complexes
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Keggin polyoxometalates-supported assembly of 2D supramolecular isomers: Synthesis, crystal structures and characteristics of two novel hybrid host-guest complexes

机译:Keggin多金属氧酸盐支持的二维超分子异构体的组装:两种新型杂化主体-客体复合物的合成,晶体结构和特征

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摘要

Two novel hybrid host-guest architectures based on metal-organic fragments and Keggin polyoxometalates, namely [alpha-CU12(trz)(8)]-[PMo12O40] center dot H2O (1) and [beta-Cu-12(trz)(8)][PMo12O40]center dot 2H(2)O (2) (trz = 1,2,4-triazole), have been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction (XRD), elemental analysis, powder XRD, ESR, FT-IR, UV-Vis, and thermogravimetric analysis (TGA). The [Cu-12(trz)(8)](4+) hosts in compounds 1 and 2 are two-dimensional (2D) supramolecular isomers, which present 4(4) topology based on Cu-4(trz)(4) cyclic units and 6(3) topology based on Cu-8(trz)(3) cyclic units, respectively. The metalmacrocyclic Cu-8(trz)(8) and Cu-9(trz)(9) rings represent the largest examples in the coordination chemistry of 1,2,4-triazole. 2D metal-organic fragments and Keggin anions both are connected via hydrogen bonds and Cu center dot center dot center dot O short contacts to form interesting 3D host-guest architectures of 1 and 2. (c) 2007 Elsevier B.V.. All rights reserved.
机译:基于金属有机碎片和Keggin多金属氧酸盐的两种新型混合主客体结构,即[alpha-CU12(trz)(8)]-[PMo12O40]中心点H2O(1)和[beta-Cu-12(trz)( 8)] [PMo12O40]中心点2H(2)O(2)(trz = 1,2,4-三唑),已在水热条件下制备,并通过单晶X射线衍射(XRD),元素分析进行​​了表征,粉末XRD,ESR,FT-IR,UV-Vis和热重分析(TGA)。化合物1和2中的[Cu-12(trz)(8)](4+)主体是二维(2D)超分子异构体,基于Cu-4(trz)(4)呈现4(4)拓扑循环单元和基于Cu-8(trz)(3)循环单元的6(3)拓扑。金属大环的Cu-8(trz)(8)和Cu-9(trz)(9)环代表1,2,4-三唑的配位化学中最大的实例。 2D金属有机碎片和Keggin阴离子均通过氢键和Cu中心点中心点中心点O短触点连接,形成有趣的1D和2D 3D主宾结构。(c)2007 Elsevier B.V.。保留所有权利。

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