三维锌孔道配位聚合物的合成及结构

在DMF/H2O/C2H5OH混合体系中,以2-(4-吡啶)-咪唑二羧酸为有机连接体与Zn2+反应得到了一个新的含有孔道的三维锌配位聚合物,分子式为:Zn3(HL)3(DMF)2.2DMF,H3L=2-(4’-吡啶)-咪唑二甲酸,DMF=N,N-二甲基甲酰胺。单晶X射线分析显示1是带有一维矩形孔道的三维开骨架结构,孔道直径大小为18.28×6.952。     

基于含铜簇配位聚合物的制备及晶体结构

通过席夫碱配体2-羟基-3-甲氧基-苯甲醛缩烟酰肼(IAH)和碘化亚铜在溶剂热条件下得到新型的铜(I)配位聚合物[(Cu2I2)L]n。通过元素分析、红外光谱和热重分析等方法对该配合物进行了表征,并测定了它的单晶结构。配合物属三斜晶系,空间群P-1,a=7.998 8(8)?,b=12.642 3(12)?,c=17.919 7(17)?,α=89.528(2)°,β=89.528(2)°,γ=73.688 0(10)°,V=1 738.9(3)?~3,Z=2。     

A Novel 3D Europium (III) Coordination Polymer Constructed from 3,5-Pyridinedicarboxylate Acid: Synthesis, Crystal Structure and Emission Spectrum

Abstract  A novel 3D coordination polymer Eu₂(PDC)₃(H₂O)₃ (1) has been synthesized by hydrothermal reaction of europium chloride with 3,5-pyridinedicarboxylate acid (H₂PDC) under acidic condition (pH 2–3). Complex 1 is a 3D coordination polymer via 1D infinite chains built by the pyridinium moieties of the PDC²⁻ anions. The thermal analyses and luminescent properties of 1 have also been investigated. Graphical Abstract   A novel 3D coordination polymer Eu₂(PDC)₃(H2O)₃ has been synthesized by hydrothermal reaction of europium chloride with 3,5-pyridinedicarboxylate acid under acidic conditions (pH 2–3). The formation of the title complex demonstrates that pH plays an important role during the synthesis.      

A 3D Gd–Ag coordination polymer constructed from pyridine-3,5-dicarboxylic acid: Synthesis, crystal structure and magnetic properties

A novel heterometallic coordination polymer, [AgGd(PDC)₂]·2H₂O (1) (H₂PDC = pyridine-3,5-dicarboxylic acid), have been synthesized under hydrothermal conditions, and characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray diffraction. Complex 1 features an unusual three-dimensional network structure in which infinite gadolinium-carboxylate chains are linked by [Ag(PDC)₂]³⁻ metalloligands to form a mixed-metal coordination network. Moreover, the luminescent properties and magnetic properties of 1 have also been investigated.     

一种三维配位聚合物的水热合成和晶体结构

通过水热合成法获得了La2（H20）4（PDC）2（XO）·2H2O,X射线-单晶衍射结果表明,标题化合物属于单斜晶系,空间群为P2（1）／n,晶胞参数为a=0．77512（16）nm,b=0．9975（2）nm,c=1．5142（3）nm,β=98．50（3）°和Z：4。La（Ⅲ）呈现四方反棱柱体的配位模式,分别和2个来自同一个草酸配体的氧原子、4个来自4个PDC配体的氧原子以及2个来自2个配位水分子的氧原子配位。标题化合物的三维结构是通过草酸配体和水分子配体将二维[La（PDC）]^＋阳离子层连接而成。该三维网络结构中沿着a-轴形成孔道,标题化合物中的自由水分子占据了这些孔道。该化合物在250℃下保持热稳定。     

A 3D interpenetrating coordination polymer based on a T-shaped linker of [Cu3Br6]

A new photoluminescent copper(I) polymer [(Cu₆Br₆)(bix)₃]_n (bix = 1,4-bis(imidazole-l-ylmethyl)benzene) (1) has been hydrothermally synthesized and structurally characterized. The structure of 1 features a 3D interpenetrating network with a novel (Cu₃Br₆) cluster unit acting as a T-shaped module. The present compound was characterized using IR, Elemental analysis and X-ray single-crystal analysis. The photoluminescent property of the title compound was also investigated.     

A new (3,4,7)-connected topology framework based on [Cd2(CO2)3O4N2] second building unit

A new 3D coordination polymer [Cd₂(L³)(BTC)(H₂O)] (1) (HL³ = 3,5-bis(pyridin-3-ylmethoxy)benzoic acid, H₃BTC = 1,3,5-benzenetricarboxylic acid), has been isolated under hydrothermal condition and characterized by single-crystal X-ray diffraction. Compound 1 is constructed from Cd₂-based second building units (SBUs) [Cd₂(CO₂)₃O₄N₂] and displays a 3D (3,4,7)-connected net with (4²·6)(4³·6³)(4⁵·6¹¹·8⁵) topology. In addition, the photoluminescent spectra indicate compound 1 may be a good candidate for blue-luminescent materials.     

配位聚合物[Cu(OPT)_2]_n的合成及表征

利用水热法,以3-(3-羟基)-5-(吡啶-2-基)-1,2,4-三唑和硝酸铜为原料,合成一个结构新颖的3D超分子配位聚合物[Cu(OPT)2]n(1)。并对其进行了X-射线单晶衍射、元素分析、红外检测及热稳定性分析等结构测定和表征。结果表明,该配位聚合物属于单斜晶系,P21/n空间群,中心Cu(Ⅱ)离子与四个氮原子配位,形成四配位的平面正方形结构,其中两个氮原子来自两个配体的三唑环,另两个氮原子来自两个配体的吡啶环。配合物中存在分子内三中心氢键,并通过分子间氢键作用形成3D超分子结构。     

配合物Ag(bbte)BF4的合成与晶体结构

以AgBF4和1,2-双正丁基硫醚乙烷(bbte)为原料,合成了一种配合物Ag(bbte)BF4晶体,对其进行了元素分析、红外光谱表征和X-射线单晶衍射测定.X射线单晶衍射显示在[Ag(bbte)BF4]n中Ag(Ⅰ)处于平面三角形配位环境,bbte以两个S原子螯合一个Ag(Ⅰ),其中一个S原子桥联相邻的两个Ag(Ⅰ)而形成一维链状结构.该配位聚合物属单斜晶系,P2(1)/c空间群,晶胞参数为a=0.932(1)nm,b=0.799(1)nm,c=2.181(1)nm,β=97.671(9)°,单胞体积V=1.610 8(14)nm3,晶胞内分子数Z=4,理论密度dc=1.654 Mg/m3,吸收系数μ=1.531 mm-1,(000)点结构因子F(000)=808,残差因子R1=0.069 1,wR2=0.1378.     

d-f配位聚合物纳米线的合成及其磁光性质的研究

利用羧酸功能化的金属铱配合物[(ppy)2Ir(H2dcppy)]PF6与Gd离子配位,合成了d-f配位聚合物纳米线。荧光光谱表明,该纳米线具有良好的磷光发射性质,纳米线相比纯的铱配合物发射光谱有30 nm的蓝移。根据核磁共振成像结果,计算纳米线在溶液中的弛豫率,其r1为4.56 mM-1·s-1,r2为9.52 mM-1·s-1,该纳米线具有较小的r2/r1,可以作为阳性核磁共振成像造影剂。     

配合物起爆药的结构与性能

比较了配合物起爆药中,不同中心金属离子、不同配位体和阴离子对起爆药性能的影响。硝酸根为阴离子的起爆药的机械感度低。5-硝基四唑为配位体的起爆药的各种感度均较低,且爆热、爆容和爆速均较大,爆发点高,是高能钝感配位体。锌为中心金属离子起爆药热安定性最高。     

硫代碳酰肼缩邻香草醛的合成、晶体结构及非线性光学性质的研究

报道合成了一种新的化合物硫代碳酰肼缩邻香草醛(1)(C19H22N5O4S,Mr=416.48),通过元素分析、红外光谱、紫外光谱和氢核磁共振谱对其结构进行了表征。用X-射线单晶衍射测定了其晶体结构。结果表明:晶体属于三斜晶系,P1-空间群,晶胞参数:a=0.9983(1)nm,b=1.0509(1)nm,c=1.0748(1)nm,α=90.089(2)°,β=110.033(2)°,γ=103.069(2)°。用开孔Z-扫描技术在523 nm脉冲激光波长下研究了该化合物的DMF溶液的三阶非线性光学性质。单晶数据注册编号:CCDC 240088。     

Vertical Interpenetration of 1D Water Column and 1D Coordination Polymer Chain

Hydrothermal reaction of 1-amino-1-phenylmethane-1,1-diphosphonic acid (APhMDPH₄), ZnO and 2,2′-bipyridyl (2,2-bipy) affords a novel zinc phosphonate compound, i.e. Zn₃(L₁H)₂(2,2′-bipy)₃ · 18H₂O (1), in which the phosphonate ligand, L₁H₄, is generated via an in situ concentration reaction. This compound is a one-dimensional (1D) zigzag coordination polymer chain and a huge, complex 1D water column. The 1D water column and the 1D coordination polymer chain are joined together to form a vertical interpenetrating network, which is reported for the first time.     

金属-有机配位聚合物的制备、表征及应用

金属有机配位聚合物具有结构多样性和新颖有趣的性质,综述了国内外金属有机配合物的一般合成方法,新得到的配合物的具体表征及应用领域。并对其发展前景进行了展望。     

高吸水性树脂的结构设计与性能改善

利用Flory凝胶理论阐明了高吸水性树脂的吸水机理 ,并解释了高分子链上的电荷密度、外界溶液离子强度以及交联度对树脂吸水倍数和吸水速率的影响。介绍了利用分子设计和颗粒形状设计对高吸水性树脂进行结构设计以改善树脂综合性能的方法。指出今后高吸水性树脂的研究重点应集中在高性能化、材料复合化、智能性凝胶、生物可降解性的研究等几个方面     

新型配位聚合物[Co(C_5H_5N)_2(H_2O)_2(O_2CC_2H_4CO_2)]_n的水热合成和晶体结构

以CoCl2.6 H2O和丁二酸(CH2COOH)2、三乙胺为原料,在中温水热反应条件下,合成了一种新型配位聚合物[Co(C5H5N)2(H2O)2(O2CC2H4CO2)]n,并对其进行了X射线单晶衍射和红外光谱测定。晶体数据如下:正交晶系,Pbca空间群,a=11.91940(12)nm;b=8.91440(10)nm;c=15.1025(2)nm;α=90.00;β=90.00;γ=90.00;V=1604.71(3)nm3;Z=4;Dc=1.528 g/cm3;μ=1.101 mm-1;F(000)=764;R1=0.0492,wR2=0.0831。该晶体通过分子间氢键和相互作用的π-π键形成一维的链状结构。     

Synthesis, structures, and photoluminescent properties of 3D lanthanide coordination polymers with rare (4,5)-connected topology

Three lanthanide coordination polymers, [Ln(Hpdc)(ox)_0.5(H₂O)₂]·H₂O (Ln = Nd(1), Eu(2), Er(3)) (H₃pdc = 3,5-pyrazoledicarboxylic acid, ox = oxalate), have been synthesized by the hydrothermal reaction of lanthanide nitrates, 3,5-pyrazoledicarboxylic acid, and oxalic acid (H₂ox) and characterized by elemental analysis, IR, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction studies indicate that complexes 1–3 are isomorphous and exhibit three-dimensional metal–organic frameworks with uncommon (4,5)-connected topology, which contain open channels occupied by the lattice water molecules. The photoluminescent properties of complex 2 were also studied.     

由对苯二甲酸构筑的铽三维聚合物的合成和晶体结构

使八水硫酸铽与对苯二甲酸(HOOCC_6H_4COOH)在N,N-二甲基甲酰胺(DMF)和甲醇的混合溶剂中反应,采用挥发法,合成了一个三维的配位聚合物[Tb_2(OOCC_6H_4COO)_3]·DMF·4H_2O。采用元素分析、红外以及X-射线单晶衍射进行了结构表征。晶体结构测试表明:在此配合物中,Tb(III)通过对苯二羧酸配体的桥连形成了一个新颖的三维结构。     

Hydrothermal Synthesis and Crystal Structure of a Novel 2-Fold Interpenetrated Framework Based on Tetranuclear Homometallic Cluster

Abstract A novel 2-fold parallel interpenetrated polymer, Zn₂(OH)(pheno)(p-BDC)_1.5 · H₂O (1) (pheno = phenanthrene-9,10-dione; p-BDC = 1,4-benzenedicarboxylate) was prepared by hydrothermal synthesis and characterized by IR spectra, elemental analysis and single crystal X-ray diffraction. Complex 1 crystallizes in the orthorhombic space group Pbca and affords a three-dimensional (3D) six-connected α-Po network. Graphical Abstract Hydrothermal Synthesis and Crystal Structure of a Novel 2-Fold Interpenetrated Framework Based on Tetranuclear Homometallic Cluster Rong-Yi Huang, Xue-Jun Kong and Guang-Xiang Liu A intriguing feature of complex 1 is a pair of identical 3D single nets is interlocked with each other, thus directly leading to the formation of a 2-fold interpenetrated 3D → 3D architecture.      

A New 3D Coordination Polymer Based on Pentanuclear Cd(II) Rod-Shaped Secondary Building Unit: Synthesis,Crystal Structure and Luminescent Property

A new coordination polymer [Cd_2.5(μ₃-OH)(L)₂(bipy)]_n (1). (L = 1,2-naphthalene dicarboxylate, bipy = 4,4′-bipyridine), was obtained under hydrothermal condition. The structure of 1 has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis and IR spectrum. Single-crystal X-ray diffraction analyses reveal that complex 1 crystallizes in triclinic system, Pī space group. Complex 1 possesses a 3D pcu net based on a pentanuclear Cd(II) cluster. Each pentanuclear Cd(II) cluster links with neighboring ones and generates a rod-shaped secondary building unit, which is further extended by bipy ligands to forms a three-dimensional network. Furthermore, the luminescent properties of this complex and the free ligand have been investigated. Complex 1 can be excited directly and emit strong soild-state fluorescence at room temperature, which may make them excellent candidates for fluorescent materials.