含吡啶-2,5-二羧酸稀土-锌配位聚合物的合成结构和性能

Gd₂O₃,Zn(CH₃COO)₂·2H₂O和吡啶-2,5-二羧酸(H₂pydc)的水热反应导致一个新颖的钆-锌配位聚合物[La₂Zn₂(pydc)₅(H₂O)₂]_n(1)。化合物1的晶体属单斜晶系,空间     

Synthesis and Crystal Structure of[Ni(C5H2N2O4)(2, 2'-bipy)(H2O)2]·2H2O

The crystal structure of [Ni(C5H2N2O4)(2, 2?-bipy)(H2O)2]·2H2O 1 has been determined by X-ray diffraction. Crystal data: triclinic system, space group P ī with a = 7.9424(3), b = 9.9417(3), c = 12.1867(3) (A。）, α = 84.771(1), β = 77.375(2), γ = 68.993(2)°, C15H18N4O8Ni, Mr = 440.7, V = 876.16(5) (A。）3, Z = 2, Dc = 1.672 g/cm3, F(000) = 456, ((MoK() = 1.162 mm-1, the final R = 0.0464 and wR = 0.1055 for 3026 observed reflections with I > 2((I). In the title compound, the nickel ion is coordinated by a nitrogen atom and an oxygen atom from the orotate ligand, two nitrogen atoms from 2, 2'-bipy and two oxygen atoms from the coordinated water molecules in a distorted octahedral geometry. The presence of intermolecular hydrogen bonding and (-( stacking interaction of aromatic rings from 2, 2'-bipy results in a 3D structure.     

溶剂控制的铜基金属-有机框架物的合成与荧光性能

金属-有机框架物在荧光识别领域表现出良好的应用前景,为探究合成更为精确识别的物质,本文利用二羧酸配体(H_2PAIA=5-丙酰胺基间苯二甲酸)和硝酸铜通过溶剂调控合成了两例结构不同的铜基金属-有机框架物(MOFs){[Cu(PAIA)(H_2O)]·2H_2O}(1)和{[Cu_3(PAIA)_2(DMSO)(Pyridine)_(1.5)]}(DMSO:二甲基亚砜;Pyridine:吡啶)(2)。尽管由相同的金属离子和有机配体构筑而成,但显示出具有显著溶剂导向特征的不同框架结构:配合物1为三维NbO型拓扑结构,而配合物2为二维sql型拓扑结构。正是由于这些结构上的差异,导致两个配合物的荧光识别性能和疏水性能展现出显著的不同。配合物1能够同时识别Pb~(2+)和Ag~+离子,而配合物2只能识别Pb~(2+),对Ag~+没有明显的信号响应。配合物1的疏水角85.06°比配合物2的52.71°有显著的增加。     

多酸基硫化态催化剂的加氢脱硫和电解水析氢应用

油品加氢脱硫(HDS)和电解水析氢(HER)是解决目前石油引起的能源环境问题的有效途径,开发高效且低成本的非贵金属催化材料是实现工业化的关键步骤。由于硫化态过渡金属具有高价态、独特的晶体结构和热稳定性,目前已证明MoS₂和WS₂是同时实现HDS和HER的理想材料。多酸作为一种由多种过渡金属和氧原子组成的结构明确的无机纳米簇,是制备过渡金属硫化态材料的合适前体。近年来,多酸制备硫化态催化剂成为绿色化学的研究热点。本文综述了基于多酸的硫化态催化剂在HDS和HER领域的研究进展,介绍了两类过程的工作原理和相互关联,总结并讨论了基于多酸的硫化态催化剂的催化机理、结构优势和存在问题,并对其应用前景进行了展望。     

One—dimensional Chain Topology in [Ag（C6H6NCl）2]（ClO4）,Generated through Weak Interaction between Molecules

1 INTRODUCTION It is known that the research of supramolecular chemistry and crystal engineering of coordination compound receives great interest nowadays.[1~6] Supramolecules are not just collection of molecules, generally, the formation of a supramolecule is through hydrogen bonding, π-π stacking interaction and the weak interaction between molecules.[1] Recently, more and more supramolecular compounds containing polymeric Ag(I) species have been described due to the coordination mode…     

Hydrothermal Synthesis and Crystal Structure of [Mn（phen）-（m-phth）]n （phen=1 ,10-phenanthroline, m-phth=isophthalate）

Introduction Recently, many novel polymers with a variety of metal ions have been prepared and structurally characterized owing to the versatility of carboxylate ligands.1-5 Much attention has been devoted to this field partly because polymers of carboxylate ligands are good candidates for the investigation of exchange-coupling interactions between adjacent metal ions. A successful strategy to synthesize these complexes is the reaction of metal salts with properly selected multi-dentate carbox…     

Synthesis and Structure of [Cu（OH）2（H2O）2（4—C5H4N—COOH）2]

1 INTRODUCTION Supramolecular chemistry and crystal engineering of coordination compounds have attracted considerable interests nowadays owing to the fascinating structural diversity and potential applications as functional materials[1,2]. Generally, architectures of supramolecules are formed through hydrogen bonds, ?- ?stacking interaction or other weak interactions between the molecules. Recently, many supramolecular compounds containing silver(I) and copper(II) species have been re-…     

Hydrothermal Synthesis and Structure of a New 3D Lanthanide-Carboxylate Framework,[La(btec)_(1/2)(H_2btec)_(1/2)(H_2O)]_n(H_4 btec=1,2,4,5-Benzenetetracarboxylic acid)

Introduction　　Recently ,thedesignandsynthesisofmaterialswithnovelstructureandunusualfunctionhavebecomeanactiveresearchfield .1,2 Lanthanidecomplexeshaveattractedmuchattentionofthechemistsowingtotheirintriguingproperties ,suchasmolecularmagnetization ,3absorption ,4 heterogeneouscatalysis.Aseriesoflanthanide carboxylatecomplexexam pleshasbeenreportedandallkindsofcoordinationmodelsofthecarboxylategrouparefoundinthosestructures.5 8Inourpreviousworkandothers,itwasfoundthat 1,2 ,4 ,5 ben zenetet…     

Syntheses and Crystal Structure of a New 3D Ag(I)-Fumaric Acid Framework, [Ag(hmt)(fma)_(1/2)·2H_2O]_n

IntroductionInrecentseveraldecades ,thedesignandsynthesesofnovelstructurematerialhavebecomeanactiveresearchfield .1 3However,thedeliberatedesignofnewfunctionalmaterialsbasedonpolymerisstillanarduouschallengetoinorganicchemistsbecausetheassemblyofthosestructuresisheavilyinfluencedbymanyfactorssuchasthepHval ue ,thesolventandcounterion .4 Muchefforthasbeende votedtoexploreusefulsyntheticstrategiesinordertoob taintheanticipatoryframework .Fortunately ,alotofin triguingstructureshavebeensynthesiz…     

含吡啶-2,5-二羧酸稀土-锌配位聚合物的合成结构和性能（英文）

Gd2O3,Zn(CH3COO)2·2H2O和吡啶-2,5-二羧酸(H2pydc)的水热反应导致一个新颖的钆-锌配位聚合物[La2Zn2(pydc)5(H2O)2]n(1).化合物1的晶体属单斜晶系,空间群P21/c,a=9-5869(1), b=20.4862(3), c=10.1105(2)A,β=97.4890(10)°,V=1968.76(5)A3,Z=4.在同样的条件下,Er2O3或Tb4O7,Zn(CH3COO)2·2H2O和H2pydc的水热反应产生了与化合物1结构不同的配位聚合物[Ln2Zn(pydc)4(H2O)8·H2O]n(Ln=Er(2); Ln=Tb(3)).化合物2和3异质同晶,空间群P1.对2:a=7.8708(7), b=9.2665(8), c=13.0232(11)A, α=75.295(1),β=75.000(2),γ=79.109(2)°,V=879.67(13)A3,Z=1; 对3:a=7.9105(5), b=9.3453(6), c=13.0005(9)A, α=75.3380(10),β=75.0460(10), γ=79.0050(10)°,V=890.17(10)A3,Z=1.X-射线单晶结构研究表明化合物1是一个三维网状结构,而化合物2和3为管状结构.热重分析研究表明所有化合物在380℃以下稳定.