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1.
A novel 1D coordination polymer of [Mn(4-CPOA)(2,2-bipy)(H2O)]n (4-CPOA2-=4-carboxylphenoxyacetate) has been synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction. The crystal crystallizes in monoclinic system, the space group is C2/c, with the crystal cell parameters a=1.437 9(2) nm, b=1.323 4(2) nm, c=1.970 5(3) nm, β=104.00(3)° and V=3.638 3(10) nm3, Mr=423.28, R=0.065 9, wR=0.130 3. The Mn(Ⅱ) ion displays a distorted octahedral coordination configuration, defined by three carboxyl O atoms from different 4-CPOA2- groups, two N atoms from the 2,2-bipyridine ligand and one water molecule. Adjacent Mn(Ⅱ) ions are linked by carboxylate groups into a chain structure with the Mn…Mn separation of 0.977 1(3) nm. The two-dimensional supramolecular network is constructed through intermolecular hydrogen bonds and π-π stacking interactions. CCDC: 224464.  相似文献   

2.
黄妙龄 《无机化学学报》2010,26(10):1912-1915
<正>0 Introduction The design and synthesis of coordination polymershas been a subject of intense research due to their novel structures such as diamond,square network,brick wall network,octahedral network and so on  相似文献   

3.
0引言由于羧酸化合物具有丰富的配位结构类型,而且羧酸桥联多核配合物广泛存在于生物体内金属蛋白和金属酶的活性部位,使其在配位化学中占有重要地位[1]。尤其是近年来,研究发现羧酸配位聚合物具有潜在的光学、磁学、吸附分离、信息储存以及催化等性能,使得由苯二甲酸,均苯三甲  相似文献   

4.
The synthesis,structural characterization and thermal behavior of a novel one-dimensional manganese (Ⅱ) complex of formula [Mn(1,5-nds)(Him)4]n [1,5-nds=naphthalene-1,5-disulfonate,Him=imidazole] is reported.The complex crystallizes in the triclinic system,space group P1,with a=0.835 42(13) nm,b=0.983 45(18) nm,c= 0.987 42(19) nm,α=60.523 0(10)°,β=97.748(2)°,γ=87.189(2)° and Z=2.The 1,5-nds ligand assumes the μ2 coordination mode and interlinks Mn(Ⅱ) ions into infinite one-dimensional chain structure along [111] direction,with the adjacent Mn…Mn distance being 1.144 99(12) nm.The chains are assembled into a three-dimensional supramolecular architecture via hydrogen bonds and C-H…π interactions.IR spectra and thermal analysis data are in agreement with the crystal structure.  相似文献   

5.
以六水合氯化锰,二苯甲醚二羧酸(Hoba)和吡嗪[2,3-f]邻菲咯啉(L)为原料合成了一种新型化合物[二水合(二苯甲醚二羧酸)(吡嗪[2,3-f]邻菲咯啉)水合锰][Mn(oba)(L)(H2O)].2H2O(1),该化合物为链状结构,吡嗪[2,3-f]邻菲咯啉(L)配体间的π-π相互作用将化合物连接成二维超分子结构.  相似文献   

6.
合成了一个新的配位聚合物[Ni(p-CPOA)([(2,2)0(')]-bipy)(H2O)]n(p-CPOA= 4-羧基苯氧乙酸根[(, )(2,2)0(')( )]-bipy= [(2,2)0(')( )]-联吡啶), 并对其进行了元素分析、红外和单晶 X-射线的表征。结果表明:配合物的化学式为C19H16N2O6[(Ni)(, /c, 晶胞参数[(a)( )]= 14.254(3), b = 13.085(3), c = 19.372(4) ? ?= 104.89(3),V = 3491.8(12) 3, Z = 8, Mr = 427.05, Dc = 1.625 g/cm3, μ = 1.153mm-1, F(000) = 1760, 最终R = 0.0345, wR = 0.0565。Ni原子为扭曲的六配位八面体构型, 每个p-CPOA2-配体桥联2个Ni原子形成一维折叠链状结构[(, )22.7(Ni)]…Ni原子之间的距离为[(9.67)(5)], 且通过分子间氢键将一维链连接成双链结构。  相似文献   

7.
0IntroductionAs the active sites of several mononuclear en-zymes are five-or six-coordinate manganese speciescontaining coordinated carboxylate groups,water andnitrogen-donor molecules research on the coordinationcompounds of manganese with such coligands hasgrown[1,2].There has been extensive interest in man-ganese chemistry due to the involvement of manganesein many biosystems and magnetic materials[3 ̄5].Theisophthalate as a potential bidentate ligand seemsquite suitable for self-assembly s…  相似文献   

8.
0IntroductionIn recent years many interests have been focusedon the self-assembly of supramolecular architectures,especially on the coordination polymers with rigid or-ganic aromatic carboxylic acid ligands such as tereph-thalate and benzene tetracarboxyl…  相似文献   

9.
有机锡的羧酸配合物因其具有很强的生物活性以及多变的结构类型受人们的广泛关注1~4。研究结果表明中心锡原子的配位形式决定于直接与锡原子相连的烃基的结构和羧酸基配体的类型56。为了研究该类配合物的生物活性及其结构关系近年来合成了许多不同类型的有机锡的羧酸配合物。尤其是对羧酸配体中具有额外孤电子对的有机锡羧酸配合物的研究导致了许多新型结构的有机锡化合物的发现7~9。为探索三烃基锡羧酸配合物的结构类型、羧酸配体中杂原子与锡原子的作用方式以及分子结构与其生物活性的关系本文合成了三苄基4吡啶甲酸锡结晶水合物…  相似文献   

10.
合成了一个新的配位聚合物[Ni(p-CPOA)(2,2′-bipy)(H2O)]n(p-CPOA2-= 4-羧基苯氧乙酸根,2,2′-bipy= 2,2′-联吡啶),并对其进行了元素分析、红外和单晶X-射线的表征.结果表明:配合物的化学式为C19H16N2O6Ni,晶体属单斜晶系,空间群为C2/c,晶胞参数a = 14.254(3),b = 13.085(3),c = 19.372(4)A,β = 104.89(3)°,V = 3491.8(12)A3,Z = 8,Mr = 427.05,Dc = 1.625 g/cm3,μ = 1.153mm-1,F(000) = 1760,最终R = 0.0345,wR = 0.0565。Ni原子为扭曲的六配位八面体构型,每个p-CPOA2-配体桥联2个Ni原子形成一维折叠链状结构,Ni…Ni原子之间的距离为9.675A,且通过分子间氢键将一维链连接成双链结构.  相似文献   

11.
A novel coordination polymer of [Zn(4-CPOA)(Phen)(H2O)]n (C21H16N2O6Zn,1,4-CPOA = 4-carboxylato-phenoxyacetate dianion and Phen = 1,10-phenanthroline) has been synthesized and characterized by elemental analysis,IR,TG,PL and single-crystal X-ray diffraction. The crystal crystallizes in the triclinic system,space group of P1 with a = 9.622(3),b = 9.631(3),c = 11.526(4)A,α = 67.719(5),β = 71.203(5),γ = 83.552(6)o,V = 935.5(5) A^3,Z = 2,Dc = 1.625 g/cm^3,μ = 1.357 mm^-1 and F(000) = 468. The Zn(II) ion is surrounded by three carboxylate O atoms from two different 4-CPOA groups,two N atoms from the Phen ligand and one water molecule,forming a distorted octahedral coordination configuration. The Zn(II) ions were alternately interlinked by carboxylate groups of 4-CPOA with chelating bisbidentate and monodentate modes into a one-dimensional zigzag chain having an intrachain distance of ca. 9.631(1) . Under the direction of supramolecular recognition and attraction,the adjacent chains yield a double-stranded chain through π-π stacking between the phen ligands,which was further expanded into a 2-D framework via strong C–H–π interaction (ca. 2.95(1) ) between the 4-CPOA ligands and into a 3-D supramolecular network by strong hydrogen bond between terminal water molecule and carboxyl group. TG/DTG shows that its chain skeleton is thermally stable up to 419 oC and the blue fluorescent emission of the complex was determined at 471 nm in a solid state with its long decay lifetime of 1.83 ns.  相似文献   

12.
1 INTRODUCTION The self-assembly of organic-inorganic hybrid ma- terials is an intriguing area, which is yielding new generations of supramolecular architectures[1, 2]. Coor- dination by transition metals with multifunctional ligands is one of the main design principles. As a rigid multi-dentate ligand, 5-aminoisophthalic acid (AIP) has received considerable attention owing to the variety of bridging abilities[3~8]. It can engage in three types of intermolecular interactions: (1) M-L b…  相似文献   

13.
1 INTRODUCTION Recently the self-assembly through transition metal and N-containing organic ligands has appear- ed as a popular research field in supramolecular architecture. Among the N-donor organic ligands, the rigid ligands have been well investigat…  相似文献   

14.
由含氮杂环的有机羧酸分子建筑块与金属离子构筑的配位聚合物不仅具有多样的拓扑结构类型,而且在光学、磁学、吸附分离、催化等领域中显示出潜在的应用价值[1,2]。咪唑-4,5-二羧酸(H3IDC)具有N/O两种配位原子和广泛的生物学特性,且随着酸度的变化以不同的酸根离子存在(H2IDC-,HIDC2-,IDC3-),从而形成多样的配位模式,可以作为一种较好的有机羧酸桥配体与金属离子构筑配位聚合物。迄今为止,已有咪唑-4,5-二羧酸与钴、钠构筑的四方型配合物[3],与镉的单核和一维配合物[4,5],与锰形成的单核[6,7]、双核[8,9]、一维链状[10]配合物结构的报…  相似文献   

15.
A novel manganese coordination polymer [Mn(FA)2(4,4′-bipy)]n(HFA=2-furancarboxylic acid, 4,4′-bipy=4,4′-bipyridine) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group C2/c with a=1.698 4(3) nm, b=1.168 6(2) nm, c=1.009 5(17) nm, β=109.455(11)°, V=1.889 2(6) nm3, Z=4, Dc=1.523 g·cm-3, Mr=433.27, F(000)=884, μ=0.740 mm-1, R1=0.028 2 and wR2=0.071 0. In the crystal, the manganese atom is six-coordinated by two nitrogen atoms from 4,4′-bipyridine and four oxygen atoms from furancarboxylic acid molecules, completing an octahedral geometry. The 4,4′-bipyridine molecules are connected to the infinite chain [Mn(FA)2]n to form a two-dimensional layer. The quantum chemistry calculation on the title complex has been performed by means of G98W package and taking Lanl2dz basis set. CCDC: 296763.  相似文献   

16.
A new cadmium polymer [Cd(NBA)(μ3-OH)(4,4′-bipy)1/2]n 1 (NBA = m-nitrobenzoic acid and 4,4′-bipy = 4,4-bipyridine) has been synthesized by hydrothermal reaction. Its structure was determined by single-crystal X-ray diffraction method, and characterized by elemental analysis and IR spectrum. The crystal is of monoclinic, space group C2/c, with a = 15.6912(9), b = 25.9394(15), c = 6.7332(4) ′, β = 114.7700(10)°, V = 2488.4(3) 3, C12H9CdN2O5, Mr = 373.61, Z = 8, Dc = 1.995 g/cm3, μ = 1.776 mm-1, F(000) = 1464, R = 0.0411 and wR = 0.1128 for 2130 observed reflections (I > 2σ(I)). X-ray diffraction studies reveal that the compound features a layered structure, in which 4,4′-bipy ligands bridge Z type of double chains [Cd(μ3-OH)]n and NBA ligands locate at the two sides of the layer. The π-π interactions between the benzene rings of NBA ligands of two adjacent layers lead to the 3D framework.  相似文献   

17.
A novel complex [Zn(FcCOO)2(2,2'-bipy)(H2O)]2·H2O (Fc = (η5-C5H5)Fe(η5-C5H4), 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by elemental analysis, IR and X-ray diffraction. It crystallizes in monoclinic system, space group P21/c with a = 6.8187(4), b = 21.7155(13), c = 19.7411(12) A, α = 90, β = 97.7420(10), γ = 90o, C64H58Fe4Zn2N4O11, Mr = 1413.28, V = 2896.4(3) A3, Dc = 1.620 g/cm3, Z = 2, F(000) = 1444, μ(MoKα) = 1.857 mm-1, R = 0.0523 and wR = 0.0982 for 3219 observed reflections (I > 2σ(I)). Structural analysis shows that the zinc atom is coordinated with three oxygen atoms from two ferrocenemonocarboxylates and one water molecule together with two nitrogen atoms from 2,2'-bipyridine, giving a distorted square-pyramidal coordination geometry. The complex molecules are linked to form an infinite one-dimensional chain by both intermolecular hydrogen bonds and π-π stacking interactions of the bipyridine rings.  相似文献   

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