Crystal Structure, Thermal Stability and Luminescence of Coordination Polymer [Cd（BBP）（p-PDOA）]n

Hydrothermal reaction of Cd（NO3）2·4H2O with bbp and p-PDOAH2 at 140 ℃ yielded a novel 1D cadmium（Ⅱ） coordination polymer, [Cd（bbp）（p-PDOA）]n （bbp=2,6-bis（benzimidazol-2-yl）pyridine, p-PDOA=p-phenylenedioxydiacetate dianion）, in which CdN3O4 pentagonal bipyramids were linked by p-PDOA ligands in a bis-bidentate mode to construct a zigzag chain with the adjacent Cd…Cd distance of 1.14（1） nm, There exists a 2D supramolecular network linked by π-π stacking with a face-to-face distance of 0.35（1） nm between the 2,6-bis（benzimidazol-2-yl） pyridine ligands and hydrogen-bonding interactions （0.27（4） nm）. A 3D supramolecular network was further constructed by these non-covalent interactions between the zippers. The TG/DTG showed that its chain skeleton was thermally stable up to 389 ℃ and the blue fluorescent emission of the complex was determined at 428 nm in a solid state with its long decay lifetime of 7.24 ns.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium（Ⅱ） Polymer with One-dimensional Chain Structure： [Cd（MDPPz）（BDC）（H2O）]n

A metal-organic coordination compound formulated as [Cd(MDPPz)(BDC)(H2O)]n 1 (MDPPz=11-methyldipyrido[3,2-a:2',3'-c]phenazine,BDC=1,4-benzenedicarboxylate) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system,space group C2/c,with a=30.673(8),b=9.623(3),c=20.784(6) ,β=98.646(3)o,V=6065(3)3,C27H17CdN4O5,Mr=589.85,Dc=1.292 g/cm3,μ(MoKα)=0.757 mm-1,F(000)=2360,Z=8,the final R=0.0381 and wR=0.0855 for 4191 observed reflections (I>2σ(I)). 1 exhibits blue fluorescence property at room temperature.     

Synthesis and Crystal Structure of a 1-D Coordination Polymer [Pb（ANS）2（phen）]n

A new one-dimensional coordination polymer, [Pb(phen)(ANS)2]n (ANS = 2-ami- nonaphthalene-1-sulfonate, phen = 1,10-phenanthroline), has been prepared by hydrothermal synthesis and structurally characterized by elemental analysis, IR and single-crystal X-ray diffrac- tion. The results determined by XRD reveal that the complex crystallizes in monoclinic, space group P21/c with a = 16.8374(14), b = 16.9825(14), c = 9.9392 (8) , β = 95.9830(10)o, V = 2826.5(4) 3, Mr = 831.86, Dc = 1.955 g/cm3, μ(MoKα) = 6.173 mm-1, F(000) = 1624, Z = 4, the final R = 0.0272 and wR = 0.0694 for 4305 observed reflections (I > 2σ(I)). In the complex, the adjacent lead(II) ions are bridged through the oxygen atoms of sulfonate groups in a syn-syn conformation, yielding an infinite zigzag chain. And the intermolecular N–H···O hydrogen bonds link the chains into two-dimensional layered networks, which are further assembled into a separate two-layer-film-like packing structure.     

Synthesis,Crystal Structure and Characterization of a Cobalt Coordination Polymer： [Co（suc）（L）]n

The title complex, [Co（suc）（L）], 1 （L = 2-phenyl-lH-1,3,7,8-tetraazacyclopenta- [1]phenanthrene and H2suc = succinic acid） has been hydrothermally obtained and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. It crystallizes in orthorhombic, space group Pcca with a = 13.936（3）, b = 9.918（2）, c = 28.670（6）A, V = 3962.4（14）A^3, Z = 8, CoC23H16N4O4, Mr = 471.33, Dc = 1.580 g/cm^3, F（000） = 1928,μ（MoKa） = 0.907 mm^-1, R = 0.0543 and wR = 0.1336. Compound 1 exhibits one-dimensional chain structures which are further stacked by π-π interactions to give a supramolecular layer. Finally, the N-H...O hydrogen bonds between the nitrogen atom of L and carboxylate oxygen atom stabilize the structure of 1.     

Synthesis and Crystal Structure of a 2-D Framework Supramolecular Complex [Cd2（phen）2（adip）（NO3）2]

1 INTRODUCTION In the design of crystal molecule, inorganic crystal engineering is one of the focused fields that are ever developing[1]. The introduction of different metal ions and bridging ligands often gives rise to novel physical and chemical properties[2~4]. Conse- quently, the supramolecular compounds constructed from weak interactions, such as hydrogen bond, π-π stacking, C–H???O interaction, ion-π interaction and hy- drophobing interaction, have become the new focus of cryst…     

Hydrothermal Synthesis and Crystal Structure of a Cadmium（Ⅱ） Polymer with a Two-dimensional Network Structure： [ Cd（pzdc）（2,2＇-bipy） ]n·nH2O

A metal-organic coordination compound formulated as [Cd（pzdc）（2,2＇-bipy）]n·nH2O 1 （Hzpzdc = pyrazine-2,3-dicarboxylic acid, 2,2＇-bipy = 2,2＇-bipyridine） has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TG fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P2 1/c with a = 10.8081（13）, b = 14.4328（17）, c = 10.2530（12） A, β = 98.504（2）°, V= 1581.8（3） ]A3, C16H14CdN4O5, Mr= 454.71, Dc = 1.909 g/cm^3, μ（MoKa） = 1.420 mm^-1, F（000） = 904, Z = 4, the final R = 0.0230 and wR = 0.0554 for 2901 observed reflections （I 〉 2σ（I））. It exhibits an interesting two-dimensional network structure and shows yellow photoluminescent property at room temperature.     

Synthesis and Crystal Structure of a Manganese Coordination Polymer [（phen）MnCl2]n

1 INTRODUCTION Polymeric manganese complexes with fascinating topological chemistry have received considerable interest[1, 2]. The complexation of phen with man- ganese ion gives rise to a wide variety of coordi- nation complexes; however, (phen)Mn coordina- tion polymers are rare since the chelation of phen results in 1 to 3 5-membered chelating rings, ob- structing the way towards the coordination poly- mer. Similar situation has also been observed for 2,2?-bipyridine (bpy) which has si…     

二维配位聚合物[Cd(nicotinate)2(H2O)]n的水热合成、晶体结构及荧光性质

在中温水热条件下,用醋酸镉和烟酸自组装合成了二维配位聚合物[Cd(n icotinate)2(H2O)]n.对其进行了元素分析、红外光谱表征、热分析、荧光分析和X射线单晶衍射测定.该配位聚合物属正交晶系,Pbca空间群,晶胞参数为:a=1.144 6(7)nm,b=1.209 9(4)nm,c=1.742 2(4)nm,V=2.412 9(2)nm3,Z=8,Mr=374.62,Dc=2.062 g/cm3,F(000)=1 472,μ=1.832 mm-1,R1=0.023 4,wR2=0.061 0.     

配合物形成的三维超分子体系—[Ni(C_6H_4O_2N)_2(H_2O)_4]的水热法合成、晶体结构及热分析

采用水热法用Ni(NO3)26H2O和异烟酸制备出了一种新的由配合物形成的三维超分子体系—[Ni(C6H4O2N)2(H2O)4],并通过X射线衍射对其晶体结构进行了测定。 该晶体属三斜晶系,空间群为Pī, 所得晶胞参数为: a = 6.9228(4), b = 9.6664(19),c = 6.322(1) , a = 96.86(3), b = 113.33(3), g = 110.35(3)°, V = 347.6(1) 3, Z = 1, Mr = 374.98, Dc = 1.791 g/cm3, F(000) = 194, m = 1.443 mm-1。用1362个可观察的 (I > 2s(I))衍射点,修正123个结构参数, 最终偏离因子R = 0.0444,wR = 0.1271。在组成该化合物的基本结构单元[Ni(C6H4O2N)2(H2O)4]中,Ni处于1个稍微拉长的八面体的中心; 各个结构单元之间通过氢键OH…O相互连接,形成了无限伸展的具有层状结构的三维超分子体系。 另外,从差热及热重曲线可以看出,该化合物加热到154 ℃时开始分解, 首先失去4个H2O,再失去2个异烟酸根,最后残余物为NiO。     

Hydrothermal Synthesis, Crystal Structure and Photoluminescent Property of a Zinc(II) Coordination Polymer Assembled by Phthalate and 4,4''-Bipyridine

A metal-organic coordination polymer {[Zn(Pht)(4,4′-bipy)(H2O)2]·2H2O}n (Pht = phthalate, 4,4′-bipy = 4,4′-bipyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, fluorescence spectrum and single-crystal X-ray diffraction. Yellow crystals crystallize in the monoclinic system, space group P2/n, a = 7.6346(14), b = 11.316(2), c = 10.8133(19) (A), β = 92.444(3)o, V = 933.3(3)(A)3, C18H20N2O8Zn, Mr = 457.73, Dc = 1.629 g/cm3, F(000) = 472, Z = 2, μ(MoKα) = 1.367 mm-1, the final R = 0.0323 and wR = 0.0821 for 1859 observed reflections (I > 2σ(I)). The structure of 1 exhibits a two-dimensional bilayer framework formed by hydrogen bonding interactions. Furthermore, 1 shows yellow photoluminescent pro- perty at room temperature.     

Hydrothermal Synthesis, Crystal Structure and Photoluminescent Property of a Zinc(II) Coordination Polymer Assembled by Phthalate and 4,4′-Bipyridine

1 INTRODUCTION Inorganic coordination polymers or solid-state po- lymers have received considerable attention in the past few years due to their possible applications as new materials in catalysis, adsorption, ion exchange, separation, magnetic devices, etc.[1] Metal coordina- tion polymers containing dicarboxylate ions as the organic spacer have been the subject of particular interest due to their fascinating architectures and ad- vantageous properties, such as bulk magnetic beha- vior, h…     

Hydrothermal Synthesis, Crystal Structure and Fluorescence Property of a Novel Coordination Polymer [Eu2(C6H8O4)3(H2O)2]n·n(4,4''-bpy)

A novel coordination polymer [Eu2(C6H8O4)3(H2O)2]n·n(4,4’-bpy) (Mr = 928.51) was synthesized by the hydrothermal reaction of EuCl3·6H2O, adipic acid and 4,4’-bpy, and determined by elemental analysis, IR spectroscopy, thermal gravimetric analysis, single-crystal diffraction and fluorescence property. X-ray analysis reveals that a three-dimensional network has been formed between Eu3+ by carboxyl of adipic acid. The crystal is of orthorhombic, space group Pbcn with a = 21.870(7), b = 7.652(2), c = 19.624(6) (A), V = 3284.1(17)(A)3, Z = 4, Dc = 1.878 g/cm3, μ = 3.854 mm-1, F(000) = 1824, R = 0.0345 and wR = 0.0565. The coordination polymer exhibits intensive red light under UV excitation at room temperature, which is attributed to the 5D0→7F2 transition of Eu(Ⅲ) ions.     

Hydrothermal Synthesis and Crystal Structure of a Cd~(2+) Supramolecular Coordination Complex{[Cd_2(HCAM)_2(H_2O)_4]·3.5H_2O}_n with a 3D Metal-organic Open Framework

<正>A three-dimensional coordination polymer {[Cd_2(HCAM)_2(H_2O)_4]·3.5H_2O}_n was synthesized by the hydrothermal reaction of H_3CAM(H_3CAM=4-hydroxypyridine-2,6-dicerboxylic acid)and Cd(NO_3)_2·4H_2O.The structure was characterized by elemental analysis,thermal gravimetric analysis,infrared spectroscopy and single-crystal X-ray diffraction.It crystallizes in triclinic,space group P_1~-with a= 9.4389(19),b=11.009(2),c=11.192(2)(?),α=87.87(3),β= 74.63(3),γ=81.22(3)°,V=1108.2(4)(?)~3,Z=2,D_c=2.164g/cm~3,μ=2.011 mm~(-1),F(000)=710,R =0.0419 and wR=0.1170.X-ray analysis reveals that the title compound adopts a one-dimensional staircase structure by carboxyl of H_3CAM and water molecules,and it is further linked by hydrogen bonds to form a 3-D metal-organic open framework.The thermal gravimetric analysis displays that the framework exists stably below 300℃.     

Synthesis, Crystal Structure and Fluorescence Property of [Y（sip）（H2O）4]n with 5-Sulfoisophthalate Ligand

1 INTRODUCTION Recently, much attention has been focused on metal- organic coordination polymers for their structural novelty and potentially important applications as advanced materials[1～3]. With the development of crystal engineering and supramolecular chemistry, it is possible to use organic ligands and metal salts to construct metal-organic coordination polymers pos- sessing some specific properties. Furthermore, inve- stigations on coordination complexes containing rare earth ion ha…     

Hydrothermal Synthesis, Crystal Structure and Photoluminescent Property of a New Isophthalate- bridged Zinc(II) Polymer with One-dimensional Chain Structure: [Zn(ipt)(im)_2]_(2n)·3nH_2O (ipt = Isophthalate, im = Imidazole)

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

一维链状[Mn(9-AC)2(4,4'-bpy)(H2O)2]n配位聚合物的合成及晶体结构

在水热条件下(120 ℃), 将醋酸锰、4,4'-联吡啶(4,4'-bpy)与9-蒽酸(9-HAC)反应, 得到了配位聚合物[Mn(9-AC)2(4,4'-bpy)(H2O)2]n, 通过元素分析、红外光谱、X射线单晶衍射对其进行了表征, 并用TGA研究了该配位聚合物的热稳定性. 结构解析结果表明, 该晶体属于正交晶系, Fdd2空间群, a=1.66772(12) nm, b=3.36471(16) nm, c=1.1687(4) nm, V=6.558(2) nm3, Z=8, Mr=689.60, Dc=1.397 Mg/m3, R=0.0356, wR2 = 0.0604. 在该配位聚合物中, 中心锰原子采取略微变形的八面体构型, 与两种配体共同构筑了一维直线形链结构, 链与链之间通过氢键相互作用构筑成三维超分子网络.