Synthesis and Crystal Structure of a Novel Two-dimensional Layered Polymer [Zn（μ-O2CCH=CHCO2）（C3H4N2）（H2O）]n

1 INTRODUCTION More than 200 known metalloenzymes of a wide variety of types have been shown to contain zinc centers at their active sites (such as hydrolases, ligases and anhydrases)[1～3]. The active zinc centers in biological systems are usually surro…     

Synthesis and Crystal Structure of a Novel Compound of （C2N2H8O2） H6V10O28

A novel vanadate decamer, involving all vanadium atoms present in +5 oxidation and one formhydroxamic acid dimer cation readical, has been synthesized. The single-crystal X-ray diffraction shows that the orange crystal is formed in the triclinic system, space group Pi, a = 8. 4960 (17), b = 10.447 (2), c = 11.299 (2) A, α= 68. 82 (3)°,β= 87.35 (3)°, γ = 66.97(3)°. V = 855. 3(3) A3, Z = 8, R1 = 0. 0857, wR2=0. 2551. X-ray crystallographic and packing in superlattice studies showed that the crystal structure was constructed by electrostatic attraction of O-H…O hydrogen bonds between formhydroxamic acid dimer cation and decavanadate polyanion. Formhydroxamic acid dimer is got through controlling the condition of the reaction using formhydroxamic acid.     

Synthesis, Crystal Structure and Properties of Complex VO（C10H9NO3） （C13H10NO2）

Complex VO(C10H9NO3)(C13H10NO2)(C10H9NO2-3=N-salicylidene-L-alaninate, C13H10NO-2=N-phenylbenzohydroxamate) was synthesized and characterized by means of elemental analysis, IR, UV, 1H NMR spectroscopies, cyclic voltammetry and single crystal X-ray diffraction. The complex crystallized in a monoclinic system with space group P21 and crystal cell parameters a=0.9720(1) nm, b=1.8274(2) nm, c=1.2542(1) nm, β=104.868(9)°, V=2.1532(4) nm3, Mr=470.34, Z=2. The two oxygen atoms and the one nitrogen atom of the tridentate Schiff base ligand and the one oxime oxygen atom of the hydroxamate ligand coordinate to the vanadium atom, forming an equatorial plane, the two axial positions are respectively occupied by the oxygen atom of the oxovanadium and the carbonyl oxygen atom of the hydroxamate and the vanadium atom exhibits a distorted octahedral VO(ONO)(OO) coordination sphere. The 1H NMR spectrum suggests that the two isomers, endo and exo in a molar ratio of 1/1.7, coexist in the solution of the title complex in CDCl3. There exists a quasi-reversible one-electron redox reaction corresponding to VⅤ/VⅥ couple in the three non-aqueous solvents, and the redox potential E1/2 of the title complex substantially shifts in the direction of the positive voltage increase in the order: CH2Cl2＜CH3CN＜DMF.     

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-…     

Preparation, Crystal Structure and Thermal Behaviour of a One-dimensional Coordination Polymer [Mn（m-CPOAH）2（H2O）2]n

1 INTRODUCTION Supramolecular chemistry of manganese(II) car- boxylate coordination polymers has been inten- sively studied in recent years, within which ligand design is an important aspect in adjusting the coordi- nation framework and functionalities of the complexes formed[1～4]. Carboxyphenoxyacetic acids (CPOAH2), which have been known to show biological activities and are widely used in agriculture, are a family of multidentate flexible ligands with versatile binding abilities. …     

Synthesis and Crystal Structure of Zinc Complex [Zn（bipy）3][Zn（SCN）4]

1 INTRODUCTION The design and synthesis of metal-organic frame-work structure have been studied widely during thepast decade not only because of their intriguing ar-chitectures but also their unexpected properties forpotential practical applications in a wide number offields, such as asymmetric catalysis, magnetism, pho-toluminescence and so on[1～3]. These novel struc-tures can be rapidly and efficiently synthesized fromsimple subunits, where the metal ions, bi- or multi-dentate organic l…     

(C_2H_(10)N_2)[H_3As_3O_(10)]的水热合成与晶体结构

采用中温水热方法合成了新化合物(C2H10N2)[H3As3O10].利用X射线粉末衍射仪、红外光谱仪、热重分析仪及X射线单晶衍射仪表征了产物的结构.结果表明:该化合物属于单斜晶系,P2(1)/n空间群;晶胞参数为a=0.808 3(6)nm,b=1.446 9(9)nm,c=0.892 0(8)nm,β=98.16°,V=1.032 7(14)nm3,Z=4,F(000)=864,R1=0.025 3,wR2=0.093 4.其化学式为C2H13As3N2O10,分子量Mr=449.90.该化合物是由有机胺阳离子支撑的第一个具有一维链状结构的砷酸盐化合物,相邻的砷酸盐链通过AAAA堆积方式形成三维拓扑扩展结构.     

Synthesis,Crystal Structure and Antitumor Activity of a New Coordination Polymer [Cd（C（14）H（10）N3O5）2（C5H5N）2]n

A new cadmium coordination polymer,[Cd(C14H10N3O5)2(C5H5N)2]n,has been synthesized by the reaction of 2-hydroxy-N'-(4-nitrobenzoyl)benzohydraizide with cadmium acetate in pyridine and ethanol mixture solution.Its molecular structure was characterized by elemental analysis,IR spectra and X-ray crystal structure determination.Crystal data for this compound:tetragonal,space group I41/a,Mr=871.10,a=16.960(6),b=16.960(6),c=28.612(6) ,V= 8230(4)3,Z=8,Dc=1.406 g·m-3 and F(000)=3536.the final R=0.0326,wR=0.0847 for 2682 observed reflections with I 2σ(I) and R=0.0460,wR=0.0896 for all reflections.In the molecular structure of the complex,the cadmium atoms are coordinated to four N and two O atoms forming a slightly distorted octahedral geometry.The intermolecular hydrogen bonds link the neighboring molecules to form a coordination polymer which was then evaluated for its anti-tumor activities against two kinds of cell lines (K562 and BGC) by MTT method.A preliminary bioactivity study indicates that the complex has distinct inhibitory effect on K562 cell lines.     

配合物[Mn(C13H8N2OBr)2(C5H5N)2]·3C5H5N的结构与磁性研究

The complex [Mn(C₁₃H₈N₂OBr)₂(C₅H₅N)₂]·3C₅H₅N has been synthesized and characterized by X-Ray diffraction, IR and variable temperature (～10 to ～278K) magnetic susceptibility. X-Ray diffraction result for the single crystal shows that the crystal belongs to monoclinic, space group P2₁/c, a=1.0969(3)nm, b=2.0903(5)nm, c=2.0481(6)nm, β=97.366(6), V=4.657(2)nm³, Z=4, D_c=1.47g·cm^-3。     

Synthesis and Crystal Structure of a Coordination Polymer [Zn（p-pdoa）（bbp）]n with a One-dimensional Helical Chain

The coordination polymer [Zn（p-pdoa）4（bbp）]n 1 （p-pdoa = p-phenylenedioxydiacetate dianion and bbp = 2,6-bis（benzimidazol-2-yl）pyridine） has been synthesized by hydrothermal method and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The title complex crystallizes in the triclinic system, space group P1^- with a = 7.8383（2）, b = 12.6610（4）, c = 13.1792（5）A, a = 84.433（2）,β = 74.2980（1）, γ = 87.4290（1）°, V = 1252.93（7）A^3, Z = 2, Dc = 1.593 g/cm^3,/z = 1.038 mm^-1, F（000） = 616, the final R = 0.0361 and wR = 0.1139. The Zn（Ⅱ） atom assumes a distorted trigonal bipyramidal geometry, involving two carboxyl O atoms from two different p-pdoa ligands and three N atoms from the bbp ligand. The Zn（Ⅱ） atom is alternately interlinked by p-pdoa ligands in a bismonodentate mode into a helical chain with a long pitch of 12.661 A and the adjacent Zn…Zn distance of 11.056 and 12.245 A. There exists a 2D supramolecular framework linked by π-π stacking （3.312 A） between adjacent benzimidazoles of bbp ligands and intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate oxygen atoms （O（2）, 0（5）） and the uncoordinated imidazolyl N atoms （N…O distances 2.706 and 2.786 A）. There also exist two interlayer π-π stacking interactions of 3.299 A between adjacent central pyridines of bbp ligand and 3.176 A between the phenyl groups of p-pdoa ligand. Such π-π stacking interactions extend the two-dimensional layers into a 3D supramolecular network.     

[Ni(C_5H_5N)_2(C_7·H_6O_2N)_2]H_2O三元配合物的合成及晶体结构

合成了标题化合物。该化合物的分子式[Ni(C5H5N)2(C7H6O2N)2]H2O(C24H24N4NiO3),分子量475.18,采用单色的MoKα (λ = 0.71073 )射线测定,共收集7408个数据,其中独立衍射点2567个(Rint = 0.0272),I > 2s(I)可观测点数1926个,结果表明该化合物属单斜晶系, 空间群C2/c其晶胞参数为: a = 14.466(2),b = 12.193(2),c = 14.072(2) ;β = 116.229(2)°,V = 2226.6(5) 3,Z = 4,Dc = 1.418 g/cm3 ,μ = 0.905 mm-1,F(000) = 992. 2个水杨醛亚胺各提供2个配位原子参与配位,2个吡啶各提供1个配位原子参与配位,该配合物是六配位的八面体构型,同时讨论了该体系中不同配位原子的配位能力的差异。     

有机-无机复合物[H2(PW12O40){Zn(C10H8N2)2(H2O)}]·1.5[Zn(C10H8N2)3]·1.75H2O的合成、结构及性能

An organic-inorganic hybrid complex, [H₂(PW₁₂O₄₀){Zn(C₁₀H₈N₂)₂(H₂O)}]·1.5[Zn(C₁₀H₈N₂)₃]·1.75H₂O has been synthesized hydrothermally and structurally characterized by X-ray crystallography. The crystal belongs to monoclinic, space grounp C2/c, with a=4.709 4(2) nm, b=1.431 77(7) nm, c=2.621 07(1) nm, β=90.125(4)°, V=17.673 4(2) nm³, Z=8, D_c=3.087 Mg·m^-3, F(000)=14 884, μ(Mo Kα)=16.327 mm^-1. The structure was refined to R₁=0.068 7 and wR₂=0.158 0 for 20 128 observed reflections with I>2σ(I). Single crystal structure shows that the title compound is constructed from [PW₁₂O₄₀]^3- cluster anion and [Zn(C₁₀H₈N₂)₂(H₂O)]²⁺ metal-organic complex cation, in which metal Zn(Ⅱ) cation are coordinately bonded to the terminal oxygen of Keggin polyanions. The title compound exhibits good catalytic activity for oxidation of benzaldehyde to benzoic acid. CCDC: 624772.     

配合物(n-Bu)2Sn(C10H8N2O4)(C2H5OH)的合成和晶体结构

以2-羰基丙酸水杨酰腙作为配体与二正丁基氧化锡(Ⅳ)在苯/乙醇混合溶剂中反应, 合成了新型配合物(n-Bu)2Sn(C10H8N2O4)(C2H5OH)(C10H8N2O42为2-羰基丙酸水杨酰腙负二价离子)。用单晶X-射线衍射分析法测定了该配合物的晶体结构。晶体属四方晶系, I41/a空间群, 晶胞参数a = 2.5113(7), b = 2.5113(7), c = 1.5062(6) nm, V = 9.499(5) nm3, Z = 16, Dc = 1.396 g/cm3, m(MoKa) = 1.105 mm1, F (000) = 4096。对于2499 (I >2s(I))个可观测点, 最终可靠因子R = 0.0349, wR = 0.0793。在该配合物的分子结构中, 中心锡原子与3个O原子、1个N原子和2个C原子形成扭曲的八面体几何构型, 其中3个O原子和1个N原子为赤道配位原子, 而CSnC为配合物的轴。相邻配合物分子间因Sn…O的弱相互作用和分子间氢键的作用而以二聚体的结构形式存在。     

Synthesis and Crystal Structure of [VO2（C17H11N3O2） ] [VO （C4H13N3）（C6H5N3O） ]（C2H5OH）

The reaction of VO（acac）2 with 2-hydroxyl-1-naphthaldehyde isonicotinyl hydrazone and amines （ethylenediamine or diethylenetriamine） in CH3OH yields crystals of novel vanadium compounds characterized by IR, NMR spectroscopic methods and X-ray single-crystal structure determination. Two different vanadium units exist in the crystal cell of [VO2（C17H11N3O2）][VO- （C4H13N3）（C6H5N3O）]（C2H5OH） which crystallizes in the triclinic system, space group P1 with a = 8.0104（17）, b = 13.898（3）, c = 14.955（3）A, α = 89.103（4）, β = 79.551（4）, γ = 78.352（4）°, V = 1603.3（6）A^3, Mr = 723.54, Dc = 1.499 g/cm^3, Z = 2, λ（MoKα） = 0.71073 ]A,μ= 0.644 mm^-1, F（000） = 748, the final R = 0.0547 and wR = 0.0997 for 8920 observed reflections with I 〉 2σ（I）. According to structure analysis, two different molecules are arranged in the lattice and the two vanadium atoms adopt octahedral and square pyramidal coordination geometries, respectively. The interactions between DNA and vanadium complexes have been investigated by UV-Vis absorption spectro- photometry.     

一维链状镨配位聚合物[Pr(C_5H_4NCOO)_3(H_2O)_)2]_n的合成及晶体结构

合成了一维配位镨聚合物[Pr(C5H4NCOO)3(H2O)2]n,表征了其晶体结构.结果表明,该配合物属单斜晶系,P21/c空间群;晶胞参数:a=0.970 77(12)nm,b=1.985 2(2)nm,c=1.165 82(14)nm,β=112.023(10)°,V=2.082 8(4)nm3,Z=2;每个镨离子同6个异烟酸配体的氧原子和2个配位水的氧原子配位,形成畸变的反四方棱柱体配位构型.配体异烟酸将相邻的2个镨离子相连,形成一维链状结构.     

铋配合物[Bi(S2CNC5H10)2(NO3)]·[1，10-Phen]·0.5H2O的合成及晶体结构

The bismuth complex with dithiopiperdylcarbamate [Bi(S₂CNC₅H₁₀)₂(NO₃)]·[1，10-Phen]·0.5H₂O was synthesized. The crystal and molecular structure were determined by X-ray single crystal diffraction. The crystal belongs to monoiclinic with space group C2/c, a=3.140(2) nm, b=1.176 4(9) nm, c=2.021 6(15) nm, β=103.081(12)°, V=5.713(7) nm³, Z=8, F(000)=3064, D_c=1.815 g·cm^-3, μ=6.502mm^-1. The final R₁=0.0332, wR₂=0.040 3. In the complex, the bismuth atom is eight-coordinated in a capped distorted pentagonal bipyramidal geometry. CCDC: 222655.