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Shu-Hua Liu Jian-Wei Zhang Xiao Wang Li-Hong Wang Zhen-Hua Wang Yun-Bo Wei 《Journal of Cluster Science》2017,28(4):1955-1962
A new cadmium coordination polymer [Cd(L)(Cl)(H2O)]n (1) (L = 5-(imidazol-1-yl)-2-pyridine carboxylic anion) constructed from dinuclear cadmium clusters has been synthesized under hydrothermal condition and structurally characterized by single-crystal X-ray diffraction analysis. The compound crystallizes in triclinic system, space group P-1, with a = 6.8747(6), b = 9.7434(8), c = 9.9119(7) Å, α = 118.615(8)°, β = 104.445(7)°, γ = 94.815(7)°, V = 548.01(9) Å3, Z = 2. Compound 1 is a one-dimensional (1D) double chain structure based on dinuclear [Cd2(Cl)2] clusters, and is further extended to a 3D supramolecular framework by hydrogen bonds. As a Lewis acid catalyst, compound 1 exhibits excellent catalytic performance for the acetalization reaction under mild conditions and can be reused several times without a significant decrease of the catalytic activity. 相似文献
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A novel coordination polymer [Cd(bpda)(btx)·H2O]n (1) (H2bpda = 4,4′-carbonyldibenzoic acid, btx = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene) has been synthesized under hydrothermal condition and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. The crystal structure of complex 1 shows a novel three-dimensional framework based on Cd2O2 clusters with three-fold interpenetrated 6-connected net with point symbol of {412.63}. The photoluminescence of 1 in the solid state has also been investigated. 相似文献
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在水热反应条件下合成了1种新颖的U(Ⅵ)-K异核配位聚合物[UO2K2(pdc)2(H2O)3]n(H2pdc=吡啶-2,6-二羧酸),通过元素分析、红外、紫外光谱及热重对该配合物进行了表征。单晶结构表明:配合物属于单斜晶系,C2/c空间群;晶胞参数分别为a=1.888 5(6)nm,b=1.490 0(5)nm,c=0.740 2(2)nm,β=111.104(10)°。中心铀及钾原子通过2个氮原子和6个氧原子与吡啶-2,6-二羧酸配体结合。不同的[UO2K2(pdc)2].3H2O单元通过氧原子桥联组成三维链状配位聚合物。配位聚合物中存在π…π相互作用及氢键作用。 相似文献
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Guang-Xiang Liu 《Journal of Cluster Science》2013,24(3):935-944
A new coordination polymer, [Cd7(μ 3-O)2(glut)2(Hglut)2(trz)4]n (1) (H2glut = glutaric acid and Htrz = 1,2,4-triazole), has been synthesized under hydrothermal conditions, and further characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray diffraction. Complex 1 features a fairly complicated three-dimensional (3D) (3,3,6,10)-connected framework constructed from two-dimensional (2D) infinite [Cd7(μ 3-O)2(glut)4(Hglut)2]n layers and [Cd(trz)4]2? units. Moreover, the thermal stability and photoluminescent properties of 1 were also investigated. 相似文献
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Synthesis,Crystal Structure,Spectroscopic and Electrochemical Properties of a Copper Coordination Polymer with Unprecedented Topology
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A copper cyanide coordination polymer [Cu8(CN)8(bbtz)2]n ( 1 ) [bbtz = 1,4‐bis(1,2,4‐trizal‐1‐ylmethyl)benzene] was synthesized following a synchronous redox and self‐assembly reaction under the solvothermal condition, and characterized by elemental analysis, infrared spectroscopy, and single‐crystal X‐ray diffraction. Interestingly, complex 1 exhibits a two‐dimensional conjugated pillared double‐layer architecture and an unprecedented (3,3,4)‐connected network with the point symbol (6.7.10)2(6.72)2(62.73.10) topology. Moreover, the thermogravimetric analysis indicates complex 1 has highly thermal stability, and the solid‐state emission spectrum for its crystalline material displays a strong green luminescence band (λmax = 565 nm) at room temperature. The electrochemical behavior of complex 1 is determined by the scan rates in the range from –0.5 to +0.3 V at room temperature, and exhibits different redox processes. 相似文献
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《结构化学》2015,(5)
The new title compound N-(2-hydroxy ethyl) tetrahydropalmatine ammonium bromide has been synthesized starting from palmatine hydrochloride.The structure of the product was confirmed by 1H NMR,MS(ESI) and single-crystal X-ray diffraction.The title compound crystallizes in the triclinic system,space group P1 with a = 10.5887(11),b = 10.8652(9),c = 12.0914(12) ,β = 84.808(9)o,V = 1253.3(2) ?3,Z = 2,Dc = 1.355 g/cm3,F(000) = 530,μ = 1.680 mm-1,the final R = 0.0833 and w R = 0.2371 for 5112 observed reflections(I 2?(I)).X-ray analysis indicates that the two planar parts(C(2) C(3) C(4) C(5) C(6) C(7) N(1) C(20) C(21) C(21)) and(C(7) C(8) C(9) C(10) C(12) C(14) N(15) C(16) C(17)) are not coplanar,with the dihedral angles to be 67.9°.Weak interactions mainly between O(5)–H(5)···O from two water molecules and O(5)···Br are observed. 相似文献
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《结构化学》2016,(7)
A new phosphovanadate metal-organic complex Cu(mbpy)(VO_2)(PO_4)(1, mbpy = 5,5?-dimethyl-2,2?-dipyridyl) has been hydrothermally synthesized and structurally characterized. Single-crystal structure analysis reveals that compound 1 crystallizes in the monoclinic space group P21/c with a = 7.6640(4), b = 18.8832(10), c = 10.1893(5) ?, β = 94.782(1)o, V = 1469.47(13) ?3, Z = 4, Mr = 425.69, Dc = 1.924 g/cm~3, F(000) = 852, μ(Mo Kα) = 2.224 mm-1, R = 0.0291 and w R = 0.0980. The crystal structure of 1 features a one-dimensional framework constructed by inorganic {Cu(VO_2)(PO_4)}∞ neutral chain and organic mbpy ligands. The electrochemical property of compound 1 modified carbon paste electrode has also been investigated. 相似文献
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《结构化学》2017,(5)
A new one-dimensional Mg(Ⅱ) coordination polymer, [Mg(L)(phen)(H_2O)](1), has been hydrothermally synthesized by using 3,5-dinitro-salicylic acid(H2L) and 1,10-phenanthroline(phen). It crystallizes in monoclinic, space group C2/c with a = 33.038(7), b = 6.6481(13), c = 22.750(5) ?, β = 126.99(3)o, V = 3991.1(14) ?3, Z = 8, C19H12 MgN_4O_8, Mr = 448.64, Dc = 1.493 g/cm3, F(000) = 1840, μ(Mo Ka) = 0.146 mm-1, R = 0.0559 and w R = 0.0975. In 1, each L anion bridges two Mg(Ⅱ) atoms to give one-dimensional zigzag chains with the Mg···Mg separation of 5.34 ?, which are extended by π-π stacking interactions between 1,10-phenanthroline ligands into a two-dimensional supramolecular layer. Moreover, the O–H···O hydrogen-bonding interactions further stabilize the layer structure of 1. The luminescent property was also studied for 1 in solid state at room temperature. In addition, natural bond orbital(NBO) analysis was performed by the B3LYP/LANL2 DZ method in Gaussian 09 Program. The calculation results show obvious covalent interaction between the coordinated atoms and Mg(Ⅱ) ion. 相似文献
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通过水热法合成了2个金属-有机配位聚合物[Zn(boba)(bix)]n(1)和[Cd(L1)(L2)]2n·nH2O(2)(H2boba=4,4′-(丁烷-1,2-二氧基)-二苯甲酸,bix=1,4-双(咪唑基-1-基)苯,H2L1=4-(羧基甲氧基)苯甲酸,L2=2-(4-羟基)-1H-咪唑并[4,5-f][1,10]菲咯啉)。并对其进行了元素分析、红外光谱、热重和X-射线单晶衍射测定。配合物1为二维网状结构,配合物2为一维双链结构。此外,还研究了它们的荧光性质。 相似文献
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通过水热法合成了2个金属-有机配位聚合物[Zn(boba)(bix)]n=(1)和[Cd(L1)(L2)]2n=·nH2O(2)(H2boba=4,4’-(丁烷-1,2-二氧基)-二苯甲酸,bix=1,4-双(咪唑基-1-基)苯,H2L1=4-(羧基甲氧基)苯甲酸,L2=2-(4-羟基)-1H-咪唑并[4,5-f][1,10]菲咯啉)。并对其进行了元素分析、红外光谱、热重和X-射线单晶衍射测定。配合物1为二维网状结构,配合物2为一维双链结构。此外,还研究了它们的荧光性质。 相似文献
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本文合成了一个新的配合物Co(H2CA)2(H2O)2(H3CA=三聚氰酸),并通过元素分析、红外、荧光和单晶X-Ray射线进行了表征。标题化合物属于三斜晶系,P1空间群,a=0.503 83(7)nm,b=0.699 82(10)nm,c=0.911 08(13)nm,α=90.107(2)°,β=98.032(2)°,γ=110.788(2)°,V=0.296 92(7)nm3,Z=1,R=0.038 2。在配合物中,Co(Ⅱ)离子与三聚氰酸配体上的N原子,配位水的O原子配位,形成规则的平面正方形配位构型。相邻的2个Co(Ⅱ)平面四边形单元通过配体三聚氰酸上的氢键形成三维网状结构。室温荧光光谱测定表明该化合物在420 nm处有强的荧光发射。 相似文献
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利用刚性配体6-(3-吡啶基)间苯二甲酸(H2PIAD),制备了一种基于Mn (Ⅱ)的配位聚合物{[Mn (PIAD)(DMF)]·H2O}n(1)。采用后合成Ag纳米颗粒的策略制备了复合材料(Ag@1)以提高葡萄糖传感的电催化活性。在优化的外加电位下,通过计时电流法评估了Ag@1修饰的玻碳电极(GCE)的电催化性能。配位聚合物1为在其表面的Ag纳米颗粒均匀分布提供了固定基质,而且Ag@1传感器可以最大限度地发挥Ag与1结合对葡萄糖氧化的电催化协同效应。结果表明,Ag@1修饰的GCE对葡萄糖的检测性能良好,检出限低(6.36 μmol·L-1),选择性和灵敏度好(166.71 μA·L·mmol-1·cm-2)。 相似文献
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A novel double ladder-like cadmium coordination polymer with isophthalate as bridging ligands and imidazole as non-chelating capping ligands was obtained by a hydrothermal reaction. The crystal is of triclinic, space group P1 with a = 10.266(2), b = 11.573(2), c = 12.651(3) A, α = 89.95(3), β= 74.64(3),γ = 68.54(3)°, C50H44Cd4N12O18, Mr = 1550.57, V= 1341.1(5)A3, Dc = 1.920 g/cm3, F(000) = 764, p = 1.651 cm-1 and Z = 1. The final refinement gave R = 0.0342 and wR = 0.0738 for 5925 observed reflections with I 〉 2σ(I). The crystal structure involves two different ladder-like chains, which are further connected to form a ladder-like double chain architecture via hydrogen bonding interactions, extending along the b axis. The weak interactions including hydrogen bonds and π-π staking interactions contribute to the alignment of the complex in the crystalline state. 相似文献
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A new manganese coordination polymer(CP)has been synthesized under hydrothermal conditions.It’s formula is{Mn2(Oaobtc)(bpe)(H2O)4]}n,where H4Oobtc represents oxide azobenzene 2,2',3,3'-tetracarboxyl acid,and bpe is 1,2-bis(4-pyridine)ethylene.It was characterized by elemental analysis,infrared spectrum and X-ray single-crystal diffraction.The coordination polymer crystallizes in the monoclinic system,space group P21/c.The central ion was coordinated with H4Oobtc ligands using bridging model,and carboxylic group connects two adjacent Mn(Ⅱ)ions into dimer units.The oxygen from carboxylates connect these dimer units into a one-dimensional(1D)chain,and N atoms from the bpe further expanded them into three-dimensional(3D)supramolecular edifice,eventually.Variable-temperature magnetic measurements of CP 1 indicate the presence of weak antiferromagnetic exchange between two nearest Mn(Ⅱ)ions with J=–0.367 cm-1. 相似文献
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《结构化学》2016,(2)
A new cadmium(Ⅱ) coordination polymer,[Cd(Hcna)_2]_n(1),was hydrothermally synthesized based on 5-(4-carboxyphenoxy)nicotinic acid(H_2cna) organic linker.X-ray singlecrystal diffraction determination reveals that 1 crystallizes in the monoclinic P2_1/c space group,with a = 10.101(2),b = 7.9139(17),c= 15.627(3) A,β= 103.364(3)°,V= 1215.4(4) A~3,Z=2,M_r= 628.81,D_c = 1.718 Mg/m~3,μ= 0.963 mm~(-1),F(000) = 628,the final R = 0.0177 and wR = 0.0432 for 2263 observed reflections with I 2σ(I).In 1,the Cd(Ⅱ) cations are connected by nicotiniate units to form a two-dimensional(2D) layer,and it is further linked through benzoate units to form a three-dimensional(3D) structure.Topologically,the structure of 1 represents a 3,6-connected 3D rtl topology.Furthermore,thermal stability and photoluminescent property of 1 have also been investigated. 相似文献