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首页> 外文期刊>Crystal growth & design >New Series of Zn-II/Cd-II Mixed Ligand Coordination Polymers: Toward the Design of Metallogels
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New Series of Zn-II/Cd-II Mixed Ligand Coordination Polymers: Toward the Design of Metallogels

机译:Zn-II / Cd-II混合配体配位聚合物新系列:走向金属成对设计

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摘要

A new series of mixed ligand based coordination polymers (CPs) has been synthesized by reacting a new ligand, namely, hpdia (5-(4-hydroxyphenylazo)isophthalic acid); various bispyridyl coligands (2,2'-bipyridine (2,2'-bpy), 4,4'-bipyridine (4,4'-bpy), and 1,2-di(4-pyridyl)ethylene (bpe)); and Zn(NO3)(2)/Cd(NO3)(2) under solvothermal conditions. The molecular structure of hpdia was established by analyzing the single crystal X-ray diffraction (SXRD) data of the sodium salt of hpdia which turned out to be an alkali coordination polymer with a formula [(H2O)(4)Na-2(mu-hpdia)(4)](infinity) (CP1). SXRD analyses of the other transition metal compounds, thus synthesized, revealed that they were all coordination polymers (except DCC3-a discrete coordination complex) having formulas [{(H2O)Zn(mu-hpdia)(2,2'-bpy)}center dot}H2O](infinity) (CP2), [(H2O)Zn-2(mu-hPdia)(2)(2,2'-bpy)(2)](2) (DCC3), [{(H2O) Cd (mu-hpdia) (2,2'-bpy)}center dot H2O](infinity) (CP4), [{(H2O)Zn(mu-hpdia) (4,4'-bpy)}center dot H2O](infinity) (CP5), [Zn-0.5(hpdia) (mu-4,4'-bpy)(0.5)](infinity) (CP6), [{(H2O)(2)Cd-2,(mu-hpdia)(2)(mu-4,4'-bpy)}center dot 2H(2)O](infinity) (CP7), and [{Zn-2(mu-hpdia)(2)(mu-bpe)}center dot H2O](infinity) (CP8). The majority of the CPs were lattice occluded molecular solids. Remarkably, the reactants of all of the coordination polymers and also DCC3 showed the ability to produce metallogels which were characterized by rheology and scanning electron microscopy (SEM). The results supported the structural consideration based on which these metallogelators were designed.
机译:通过使新的配体hpdia(5-(4-羟基苯基偶氮)间苯二甲酸)与新的配体反应,合成了一系列新的混合的基于配体的配位聚合物。各种双吡啶大分子配体(2,2'-联吡啶(2,2'-bpy),4,4'-联吡啶(4,4'-bpy)和1,2-二(4-吡啶基)乙烯(bpe)) ;和Zn(NO3)(2)/ Cd(NO3)(2)在溶剂热条件下。 hpdia的分子结构是通过分析hpdia的钠盐的单晶X射线衍射(SXRD)数据建立的,该数据被证实是一种具有式[(H2O)(4)Na-2(mu)的碱配位聚合物-hpdia)(4)](无限)(CP1)。如此合成的其他过渡金属化合物的SXRD分析表明,它们都是具有式[{(H2O)Zn(mu-hpdia)(2,2'-bpy)}的配位聚合物(除DCC3-离散的配位络合物外)中心点} H2O](无穷大)(CP2),[(H2O)Zn-2(mu-hPdia)(2)(2,2'-bpy)(2)](2)(DCC3),[{(H2O )Cd(mu-hpdia)(2,2'-bpy)}中心点H2O](无穷大)(CP4),[{(H2O)Zn(mu-hpdia)(4,4'-bpy)}中心点H2O ](无穷大)(CP5),[Zn-0.5(hpdia)(mu-4,4'-bpy)(0.5)](无穷大)(CP6),[{(H2O)(2)Cd-2,(mu -hpdia)(2)(mu-4,4'-bpy)}中心点2H(2)O] [infinity)(CP7)和[{Zn-2(mu-hpdia)(2)(mu-bpe )}中心点H2O](无穷大)(CP8)。大多数CP是晶格封闭的分子固体。值得注意的是,所有配位聚合物以及DCC3的反应物均具有生成金属对苯二酚的能力,该金属对苯二酚的特征在于流变学和扫描电子显微镜(SEM)。结果支持了设计这些金属成因剂的结构考虑。

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