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The title complex, {[Cd2(1,8-nap)2(H2O)2](bpp)2}n(1), a cadmium complex based on mixed naphthalene-1,8-dicarboxylate (1,8-nap) and flexible 1,3-bi(4-pyridyl)propane (bpp) ligands, has been hydrothermally synthes-ized. It consists of a one-dimensional chain along c axis, which is derived from dimeric unit [Cd2(1,8-nap)2(H2O)2] linked by a pair of bpp ligands. In every [Cd2(1,8-nap)2(H2O)2] dimeric unit, two 1,8-nap act as bridging ligands to connect two Cd(Ⅱ) atoms, forming a sixteen-membered ring. Each Cd(Ⅱ) atom is in a distorted octahedral environment, coordinated by one aqua, two 1,8-nap and two bridging bpp ligands. In addition, two bridging bpp ligands connected two neighboring Cd(Ⅱ) atoms form a twenty-four-membered ring. The TGA and Luminescence property in solid state of complex 1 have been further studied and discussed in this paper. CCDC: 669293. 相似文献
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<正>金属-有机配位聚合物(Metal-Organic Coordination Polymers,MOCPs)材料因其多变的结构拓扑以及其在离子交换、气体储存、分离、催化和荧光传感等方面的潜在应用已引起了科学家的广泛关注。氮杂环多元羧酸配体由于其骨架比较稳定,氮原子 相似文献
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A new 2D Zn(Ⅱ) coordination polymer [Zn(HIDC)(bib)0.5]n(1) was obtained by the hydrothermal reaction of ZnCl2, imidazole-4,5-dicarboxylic acid (H3IDC), and 1,4-bis(imidazol-1-yl)-butane (bib) with 2∶2∶1 mole ratio. X-ray diffraction crystal structural analysis reveals its crystallizes in monoclinic, space group P21/n with a=0.943 38(16), b=1.022 48(18), c=1.393 8(2) nm, β=109.434(3)°, V=1.267 9(4) nm3,Z=4, Dc=1.648 Mg·m-3, F(000)=636, the final R1=0.044 1, and wR2=0.100 3 for 1 742 observed reflections with I≥2σ(I). In 1, each Zn(Ⅱ) ion is five-coordinated with a distorted trigonal bipyramidal coordination geometry, and each μ2-HIDC2 acts as a bridge to bond two neighboring Zn(Ⅱ) ions, leading to an 1D zigzag chain architecture. The adjacent chains are further linked by bib to form an infinite 2D network structure. The fluorescence spectrum of 1 exhibits intense emission at 436 nm when excited at 380 nm in solid state at room temperature. CCDC: 748259. 相似文献
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The crystal structure of the title complex, [K2(5-nbdc)2Cd(Ⅱ)·imH·H2O]∞ (5-nbdc=5-nitro-1,3-benzenedicarbonate, imH=imidazole) has been determined by X-ray diffraction analysis. The crystal data are: tetragonal, space group P41, Mr=694.93 for CdC19H12N4O13K2, a=1.018 6(10) nm, b=1.018 6(10) nm, c=2.436 7(5) nm; Z=4, V=2.528 2(6) nm3, F(000)=1 376, Dc=1.826 Mg·m-3, μ=1.267 mm-1. The title polymeric complex exhibits a two-dimensional framework, in which adjacent Cd(Ⅱ) ions are bridged by μ-O4-5-nitro-1,3-benzenedicarbonate groups forming one-dimensional chains that are further linked by μ-O3-5-nitro-1,3-benzenedicarbonate groups into two-dimensional anion rectangle sheets with large 32-membered rings. The strong π-π stacks of the benzene rings link these adjacent sheets into a three-dimensional van der Waals network. CCDC: 245527. 相似文献
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The complex {[Co(4,4′-bpy)(H2O)4](Fum)·4H2O}n(where 4,4′-bpy = 4,4′-bipyridine and Fum = fumarate) was synthesized and characterized by X-ray diffraction. The complex consists of one-dimensional chains containing cobalt(Ⅱ) ions bridged by 4,4′-bpy molecules. The six-coordination of Co2+ is achieved by means of four water molecules. The fumarate is not coordinated to cobalt ion while it forms hydrogen bonds with coordinated and non-coordinated water molecules and extends the structure into three-dimensional hydrogen bonding network. CCDC: 190488. 相似文献
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锌是重要的生命元素,在生物体内锌以多种形式参与代谢过程,包括糖类、脂类、蛋白质与核酸的合成与降解,对生命体系有着特殊的生物活性和催化作用[1].模拟合成以锌、铜等为中心离子的配位聚合物并对其结构进行研究,将为人们认识生命体系中与这些金属离子相关的生命现象提供重要的信息[2,3].4,4′-联吡啶是一种线状双基刚性配体,无支链,空间位阻少,有较好的桥联作用,它与金属离子在自组装过程中能形成各种一维,二维,及三维空间结构的配位聚合物[4~7]. 相似文献
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在甲醇和水的混合溶剂中用2,4,6-三甲基苯甲酸(2,4,6-TMBA)、邻菲咯啉(phen)、高氯酸镉为原料采用水热法合成了一维链状配位聚合物Cd(phen)(2,4,6-DMBA)2(H2O)。该配合物晶体属四方晶系,空间群I41。晶体中镉原子与1个邻菲咯啉的2个N原子、2个2,4,6-三甲基苯甲酸酸根中的3个羧基氧原子及1个水分子中的氧原子配位,晶胞参数:a=2.042 5(7) nm,c=1.395 2(5) nm,V=5.820(3) nm3,Dc=1.454 g·cm-3,Z=8,F(000)=2 608,GooF=1.064,R1=0.034 8,wR2=0.070 4。形成六配位的变形八面体结构。对晶体进行了热稳定性分析,结果表明:配合物在240.0 ℃以下稳定性好。 相似文献
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由5-(3-吡啶基)间苯二甲酸(H2pyip)为配体合成了一个Cd配位聚合物[Cd(pyip)(H2O)2]n(1)(H2pyip=5-(3-吡啶基)间苯二甲酸),并对其进行了元素分析、IR,热分析以及X射线单晶衍射法表征。晶体结构表明:配合物1属于六方晶系,P61空间群,配合物1中心镉原子是略微变形的八面体构型,该化合物通过5-(3-吡啶基)间苯二甲酸连接成了三维网格结构。配合物1的荧光测试表明它具有绿色荧光。 相似文献
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Hydrothermal reaction between 1,4-phenylenediacetic acid (H2PDA) and Zn(NO3)2·6H2O at the presence of the second ligand of 1,2-bis((1H-imidazol-1-yl) methyl)benzene (obix) yields a new 2D metal-organic coordination polymer [Zn(PDA)(obix)] (1), which has been characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermal analysis. Complex 1 presents a two-dimensional (2D) sheet structure and displays strong luminescent emission at room temperature. CCDC: 716984. 相似文献
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一维链状配位聚合物[M(H2bpb)(H2O)4](SO4)2·6H2O[M=Zn(Ⅱ),Cu(Ⅱ)]的合成及晶体结构表征 总被引:3,自引:0,他引:3
设计并合成了一个含吡啶基团的柔性配体:N,N′-Bis(3-pyridylmethyl)-1,4-benzenedimethylamine(bpb)。通过bpb与硫酸锌及硫酸铜反应得到了两个新型具有一维链状结构的配位聚合物:[M(H2bpb)(H2O)4](SO4)2·6H2O[M=Zn(Ⅱ) 1,Cu(Ⅱ) 2]。X-射线晶体结构测定表明,这两个 相似文献
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The coordination polymer [Cu(CH3COO)(C5H5N)2]n was synthesized and its crystal structure has been determined by X-ray diffraction technique.The crystal belongs to monoclinic,space group C2/c with a=1.183 2(1) nm,b=1.512 1(2) nm,c=1.3911(1) nm,β=97.137(3)°,V=2.469 6(4) nm3,C12H13CuN2O2,Mr=280.78,Z=8,Dc=1.510 g·cm-3,μ=1.759 mm-1,F(000)=1 152,R1=0.048 2 and wR2=0.122 5 for 1 515 observed reflections [1>2σ(Ⅰ)].In the crystal the copper(Ⅲ) atom is tetra-coordinated primarily by two oxygen atoms of two symmetry-related carbexyl groups of acetate anions and two nitrogen atoms of two pyridine ligands in a parallelogram fashion.All of the pyridine rings linked to Cu(1) and Cu(2) are arranged centrosymmetrically on Cu(1).The neighboring copper complex molecules are linked together by the carboxylate oxygen atom of acetate anions to form an infinite one-dimensional linear chain structure.Moreover,π-π stacking interactions between intrachain pyridine molecules play the crucial role in constructing of the supramolecular structure.CCDC:709977. 相似文献
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A complex [Cu2Br2(L)2]n(1) (L=bis(2-pyrimidinylthio)methane) has been synthesized and structurally characterized. Complex 1 contains dinuclear Cu2Br2 units, which are linked by ditopic L to form a 2D layer structure with a 36-membered macrometallocycle. The adjacent layers are further connected through interpyrimidyl rings C-H…N and π-π interactions to give rise to a three-dimensional supramolecular structure. Complex 1 also displays strong green solid-state photoluminescence, due to metal-to-ligand charge-transfer (MLCT) at room temperature. CCDC: 711434. 相似文献
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水热条件下,合成了一个三维配位聚合物[Ni2(BDC)2(m-bix)(H2O)3·3H2O]n(1)[BDC=对苯二甲酸,m-bix=1,3-双(咪唑基-1-甲基)-苯],并通过红外,热重和X-射线单晶衍射进行了表征。X射线衍射结果表明化合物含有类似配位环境的金属2个Ni2+离子,2个BDC2-配体,1个m-bix分子,3个配位水分子和3个游离的溶剂水分子。两个Ni2+离子分别采用八面体构型,通过桥联水分子形成双核单元,然后通过全部脱质子的BDC形成三维孔洞结构,m-bix配体通过连接两类双核金属原子形成三维框架,游离水分子存在于框架之中。有趣的是,化合物的结构是单一六节点,具有自穿插特征。而且对化合物的红外和热重性质进行了表征。 相似文献
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两个二维Cd(Ⅱ)配位聚合物的合成、晶体结构和荧光性质 总被引:7,自引:0,他引:7
具有d^10电子结构的简单金属配合物是不发光的。然而,采用具有π共轭芳香类有机物为配体所构建的Zn(Ⅱ)和Cd(Ⅱ)配合物,特别是具有重复单元结构的配位超分子和配位聚合物,能够发射较强的荧光,由于它们的配位数和结构的多样性,如[Cd4(betc)2(phen)2(H2O)]n(bete=1,2,4,5-benzenetetracarboxyl),[Cd(isonicotinate)2(EtOH)](EtOH),使这类化合物往往显示出一些新奇的功能。本文分别采用均苯四甲酸根和烟酸根为桥配体,合成了两种具有二维无限结构的Cd(Ⅱ)配位聚合物,它们在紫外光照射下,可以发出较强的蓝色荧光。 相似文献