The Synthesis and Structural Characterization of Two-dimensional Coordination Polymer {[Ni(phen)H_2O](μ_4-C_( 10)H_2O_8)_(1/2)}_n

The successful preparation of coordinationpolymers from modular precursors has provided afacile approach to develope solids and functionalmaterials[1— 4 ] . A popular strategy that could beemployed in the area is the adoption of bridgingligands such as cyanide,bi- pyridine,benzenetricarboxylate,etc.[3— 8] . In this context,multi- connecting carboxylates are at presentespecially interesting because they exhibit richcoordination chemistry by coordinating to metalions and have been proved to be…     

Synthesis and Structural Characterization of a Novel Coordination Polymer [Cd(C_4H_2O_4)(C_3H_4N_2)_3]_n·2nH_2O

1 INTRODUCTION In recent years, the design and synthesis of metalorganic coordination polymers have attracted considerable attention, for such supramolecular assemblies have interesting structures as well as potentiaapplications as smart optoelectronic, magnetic andporous materials. By judicious selection of ligandand metal coordination geometries, control over thetopology and geometry of the infinite networks canbe gained. As neutral donor ligands, 4,4?-bpy, pyrazine and imidazole which …     

Syntheses and Structures of Two New Coordination Polymers:[Cu(C_(14)H_9O_4)(C_(14)H_(10)O_4)(C_(12)H_(12)N_2)_2] and [Ag(C_(14)H_9O_4)(C_(13)H_(14)N_2)]·0.5H_2O

1 INTRODUCTION Supramolecular approaches to self-assembly of infinite molecular solids with novel structural topo- logies attract considerable attention for their po- tential applications as functional materials and their fascinating architectures[1]. In…     

Synthesis and Crystal Structure of (C_6N_3H_(18))_2Ti_4O_4(C_2O_4)_7·4H_2O

1 INTRODUCTION The open-framework inorganic materials have been synthesized before the early 1980s[1]. Parti- cularly, metal phosphates have been investigated widely during the past few years[2, 3]. In recent years, considerable efforts have been devote…     

Synthesis and Crystal Structure of a Coordination Polymer {[Co(phth)(phen)(H_2O)]·(C_2H_5OH)}_n

1 INTRODUCTION Metal-organic coordination polymer has particu- lar and special structure characters with some caves, holes and channels[1], and can be used in selected catalysis, molecular recognition, reversible exchan- ge of host-guest molecules (ions), super purity sepa- ration, biological conductor[2～5], etc. In the past ten years, polymers with bridging ligand have been widely investigated[6, 7]. The development of supra- molecular architectures of inorganic-organic hybrid molecules …     

Synthesis, Spectroscopic Properties and Crystal Structure of (C_4N_2H_(12))_2Zr(C_2O_4)_4·H_2O

1 INTRODUCTION The researches on transition metal coordination complexes have been rapidly expanded because of their fascinating structural diversity and potential applications[1～4]. As we know, zirconium oxalates can be used as precursors in the synth…     

Non-Isothermal Decomposion Kinetics of Supermolecule Compound [Eu(C_(10)H_9N_2O_4)(C_(10)H_8N_2O_4)(H_2O)_3]_2·phen·4H_2O

Europium(Ⅲ) compound with 2-oxopropionic acid salicyloyl hydrazone (C_(10)H_(10)N_2O_4,H_3L) and 1,10-phenan-throline (C_(12)H_8N_2,phen) has been prepared.A yellow prismatic crystal of the compound was obtained,and themolecule crystallized in the triclinic space group P-1.There are two 9-coordinated complex molecules in everystructure unit,where every Eu atom is coordinated by three water molecules and two tridentate C_(10)H_(10)N_2O_4 ligands,forming two stable pentacycles.The coordination polyhedron around Eu~(3+) was described as a single cap squareantiprism.In the crystal cell,there are one free 1,10-phenanthroline and four water molecules.The thermaldecomposition of the compound and its kinetics were studied by non-isothermal thermogravimetry.The Kissinger'smethod and Ozawa's method were used to calculate the activation energy value of the first-step decomposition.Thestages of the decompositions were identified by TG-DTG-DSC curve.The non-isothermal kinetic data were ana-lyzed by means of integral and differential methods.The possible reaction mechanism and the kinetic equationswere investigated by comparing the kinetic parameters.     

Hydrothermal Synthesis of a 1D Paddle-wheel Cu(Ⅱ) Coordination Polymer {[Cu_2(NBDOA)_2·(H_2O)_2]·2(H_2O)}_n Constructed by Flexible Carboxylic Acid

A 1-D paddle-wheel copper (II) coordination polymer constructed by 2-nitro-benzene-1,4-di(oxyacetic) acid has been synthesized by hydrothermal reaction,and its crystal structure was determined by X-ray diffraction. The crystal is of triclinic,space group P1 with a=7.7257(12),b=8.3648(13),c=11.5516(18),α=76.654(2),β=82.088(2),γ=63.636(2)o,C20H22Cu2N2O20,Mr=737.48,V=650.27(18)3,Dc=1.883 g/cm3,F(000)=374,μ=1.737 cm-1 and Z=1. The final refinement gave R=0.0345 and wR=0.0995 for 1996 observed reflections with I > 2σ(I). The coordination polymer demonstrates a 1-D microporous structure,and the channel is formed by two NBDOA2-and two Cu2+ ions. The ligand NBDOAH2 displays a good flexible characteristic. The 1-D chains are connected to a 3-D supramolecular network by hydrogen bonds.     

Synthesis and Crystal Structure of a 1-D Coordination Polymer {[Cu(NIT4py)_2(ip)]·6H_2O}_n

1 INTRODUCTION Pyridyl-substituted nitroxide radicals have at- tracted considerable attention in recent years due to the ability to coordinate with metal ions and act as magnetic couplers, giving rise to new functional ma- terials with particular magnetic and optical prope- rties as well as a variety of structural topologies[1~3]. Considerable efforts have been made in designing and preparing multi-dimensional materials with app- ropriate bridges, such as pseudohalide, dicyanide, dicyanoa…     

Hydrothermal Synthesis and Crystal Structure of a Novel Polyoxometalate K(C_4N_2H_(12))_4(C_4N_2H_(11))_(2-)[Mo_8~ⅤMo_4~ⅥCdP_8O_(54)(OH)_8]F·6H_2O

The title compound 1 has been synthesized by the reaction of H_2MoO_4, CdCl_2, H_3PO_4, KF, piperazine hexahydrate and water in aqueous solution under mild hydrothermal conditions. Single-crystal X-ray analysis reveals that the title compound crystallizes in the triclinic system, space group P(-1) with a = 14.049(3), b = 15.972(3), c = 20.043(4) (A), α = 85.82(3), β = 81.28(3),γ = 67.15(3)°, V= 4095.9(14) (A)~3, M_r = 3204.62, Z=2,D_c = 2.598 g/cm~3,μ = 2.360 mm~(-1), F(000) = 3124, the final R = 0.0314, wR = 0.0826 and S = 0.989 for 18592 observed reflections with I > 2σ(I). The crystal packing is stabilized by N-H…O and O-H…O intra- and intermolecular hydrogen bonds to form an infinite 3D network.     

A 2-D Copper Coordination Polymer [Cu(4,4''''-bpy)(H_2O)_4](C_4H_2O_4)(H_2O)_4 Integrated by Hydrogen Bonds and VDW Interactions

1 INTRODUCTION A great deal of interest in transition metal com- plex assembly has recently been devoted to the development of rational synthetic routes to novel one-, two- and three-dimensional crystal frameworks, due to their potential applications in…     

Synthesis and Structural Characterization of Two Molybdenum~phosphate Cluster Compounds: (C_(14)N_(14)H_(63) )Na(H_2Mo_6P_4O_(31))_2·8H_2Oand(C_(14)N_(14)H_(63))Na(H_2Mo_6P_4O_(31) )_2·5H_2O

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｙｎｔｈｅｓｉｓａｎｄｓｏｒｐｔｉｏｎｐｒｏｐｅｒｔｉｅｓｏｆｏｐｅｎｆｒａｍｅ ｗｏｒｋｓｏｌｉｄｓｓｕｃｈａｓｚｅｏｌｉｔｅｓ1ａｎｄｍｅｔａｌｍｏｌｙｂｄｅｎｕｍｐｈｏｓ ｐｈａｔｅ2 ,3ｗｉｔｈｌａｒｇｅｃａｖｉｔｉｅｓｐｒｏｖｏｋｅｄｅｎｏｒｍｏｕｓｉｎｔｅｒｅｓｔｂｅ ｃａｕｓｅｏｆｔｈｅｉｒｐｏｔｅｎｔｉａｌａｐｐｌｉｃａｔｉｏｎｉｎｃａｔａｌｙｓｉｓ .Ｏｎｅ ,ｔｗｏ ａｎｄｔｈｒｅｅ ｄｉｍｅｎｓｉｏｎａｌｓｏｌｉｄｃｏｍｐｏｕｎｄｓｃｏｎｓｉｓｔｉｎｇｏ…     

Crystal Structure of a Three-dimensional Coordination Polymer {[Ca_3(μ_5-OOCCH_2OCH_2COO)_3(H_2O)_4]·4H_2O}_n

A novel three-dimensional coordination polymer, {[Ca3(μ5-OOCCH2OCH2COO)3(H2O)4]- 4H2O}n, has been synthesized with oxydiacetate as bridge ligand and structurally determined by X-ray crystallography. The crystal belongs to monoclinic, space group C2/c with a = 17.805(2), b = 9.3923(12), c = 17.255(2) A, β = 107.838(5)°, V = 2746.8(6) A3, Mr = 660.58, C12H28Ca3O23, Dc = 1.597 g/cm3, μ = 0.695 mm-1, Z = 4, F(000) = 1376, GOOF = 1.027, R = 0.0303 and wR = 0.0660. In the complex there are two coordination modes for Ca(II) ions, one coordinated by three μ5-OOCCH2OCH2COO2- bridge ligands together with two H2O molecules, and the other by five μ-5-OOCCH2OCH2COO2 bridge ligands. In both coordination modes each Ca(II) ion assumes a distorted dipentapyramidal CaO7 geometry; whereas each oxydiacetate is coordinated with five Ca(II) ions and acts as a pentdentates bridge ligand.     

Synthesis, Properties and Crystal Structure of a Novel Coordinated Polymer:{(H_2en)(H_3O)[(BiPb(C_2O_4)_4(H_2O)_2)]·2(H_2O)}_n

1 INTRODUCTION It is well-known that bismuth and lead display attractive properties as promoting elements in noble metal-based catalysts[1], and thermal decomposition of ammonium metal oxalates can yield crystalline porous materials with a high surface area. This feature makes them attractive as precursors for catalysts and other nanocrystalline oxides[2]. Because of their topology, the oxalates themselves also possess inte- resting properties such as the capability of ion-exchange. The …     

C_4H_4N_8O_(14)的晶体与分子结构

C_4H_4N_8O_(14)的晶体属单斜晶系,空间群P2_1/n。晶胞参数为:a=11.820,b=6.162,c=18.229,β=96.1°,Z=4,在PW1100四圆衍射仪上收集到I>2σ(Ⅰ)的衍射点2024个。晶体结构以自编的直接法计算程序解出,最后偏离因子R=0.105。     

［Cu（C_（14）H_（11）O_3）（C_（10）H_8N_2）_2］NO_

合成了［Ｃｕ（Ｃ_（１１）Ｈ_（１１）Ｏ_３）（Ｃ（１０）Ｈ_８Ｎ_２）_２］ＮＯ_３·Ｃ_２Ｈ_５ＯＨ化合物并测定其晶体结构。晶体属Ｐ１空间群，ａ＝１．１９１１（２）ｎｍ，ｂ＝１．５３２２（２）ｎｍ，ｃ＝１．０４９２（２）ｎｍ，ａ＝１０８．９８（１）°，β＝１０７．０４（１）°，γ＝７０．２５（１）°，Ｚ＝２．在［Ｃｕ（Ｃ_（１１）Ｈ_（１１）Ｏ_３）（Ｃ_（１０）Ｈ_８Ｎ_２）_２］￣＋配合阳离子中，２个２，２’－联吡啶的４个氮原子和二苯羟乙酸的１个羧基氧原子位于铜原子周围，从而使铜原子子具有畸变的三角双锥配位构型。对红外光谱进行了归属。     

双核铜配合物{Cu[μ-S_2P(C_2H_5O)_2](C_(10)H_8N_2)}_2的合成和晶体结构

二烃基二硫代磷酸酯及其过渡金属配合物能阻止烃类自动氧化,是一种很重要的抗氧、抗磨和防腐蚀的添加剂[1] 。在生物学上也具有十分重要的地位,具有杀虫、抗菌、抗癌和抑制酶水解等特性[2] 。也广泛应用于钻镍、钻锰等金属的萃取分离[3] 。因此,对该领域的研究也十分活跃。对二烃基二硫代磷酸酯合过渡金属配合物及其加合物的研究,我们已作过多次报导 [4-7],但迄今为止,许多研究工作者希望得到二乙基二硫代磷酸酯合铜的晶体结构,均未获得成功。我们利用二乙基二硫代磷酸酯合钢与2 ,2 ’一联吡啶的加合反应,得到了标题配合物的晶体,…     

Synthesis and Characterization of a One-dimensional Chain Polymer{[Cu(4-CPOA)(3-PyOH)_2(H_2O)_2]·H_2O}_n

1 INTRODUCTION Molecular self-assembly of coordination architec- tures is a rapidly developing research area of supra- molecular chemistry in recent years[1～6]. 4-Carboxy- phenoxyacetic acid (4-CPOAH2) is a multidentate flexible and rigid ligand, which is capable of coor- dinating to metal centers in versatile binding fashi- ons and can also form regular hydrogen bonds as both hydrogen-bond donors and acceptors. To date, only Na(I), Ni(II), Mn(II) and Co(II) complexes con- taining…     

Hydrothermal Synthesis,Crystal Structure and Fluorescent Property of a Novel Mo(V) Phosphate [Zn(Mo~v_6P_4O_(31)H_(10))_2(C_4H_(14)N_3)_2]·2C_4H_(13)N_3·8H_2O

1 INTRODUCTION Hydrothermal synthesis of Mo(V) phosphates has allowed various structures, all characterized by the presence of identical clusters with the composition Mo12MP8X62 (X = O, OH) to be stabilized[1～6]. Many Mo(V) phosphates with such clusters have been iso- lated to date. The first compound was discovered by Haushalter and Lai[1] for M = Na with the formula (PPh4)2[(H3O)2NaMo6P4O24(OH)7]?5H2O. Recently, a second type of structure has been observed for M = Na (Na8(…