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Helical Coordination Polymer with a 3-Fold Interpenetration Structure Based on 5-(Hydroxymethyl)isophthalic Acid 被引量:9
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作者 徐中轩 马钰璐 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第7期1193-1198,共6页
5-(Hydroxymethyl) isophthalic acid (H2HIA) as a novel organic ligand was prepared from 3,5-bis(methoxycarbonyl)benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold inter... 5-(Hydroxymethyl) isophthalic acid (H2HIA) as a novel organic ligand was prepared from 3,5-bis(methoxycarbonyl)benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold interpenetration structure, namely [Zn1/2(HIA)1/2(DPEE)1/2]n (1), was hydrothermally synthesized at 160 ℃, using H2HIA ligands to assemble with DPEE ligands and Zn2+ ions. Complex 1 crystalizes in orthorhombic system, space group Pnna, with a = 8.2118(5), b = 17.1698(7), c =14.9922(7) ?, V = 2113.82(18) ?3, μ = 1.194 mm-1, Z = 4 and S = 0.967. Moreover, some physical characteristics of complex 1, such as powder X-ray diffraction (PXRD), thermogravimetry analyses (TGA) and photoluminescent properties, were also investigated. 展开更多
关键词 5-(hydroxymethyl) isophthalic acid helical coordination polymer 3-fold interpenetration structure
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A 3-fold Interpenetrated lvt Cd(Ⅱ) Network Constructed from 4-[(3-pyridyl)methylamino]benzoate Acid
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作者 王庆伟 陈琳 +2 位作者 齐晓飞 王亚男 刘博 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第5期757-763,共7页
A new three-dimensional(3D) coordination polymer, [Cd(L)2H2O]n·5nH2O 1 with 4-[(3-pyridyl)methylamino]benzoate acid(HL), has been synthesized by slow evaporation solvent at room temperature, and structura... A new three-dimensional(3D) coordination polymer, [Cd(L)2H2O]n·5nH2O 1 with 4-[(3-pyridyl)methylamino]benzoate acid(HL), has been synthesized by slow evaporation solvent at room temperature, and structurally characterized by elemental analysis, IR spectrum, thermal analysis, fluorescence spectrum and single-crystal X-ray diffraction. Compound 1 crystallizes in the tetragonal system, space group I-4, with a = 20.7937(16), c = 13.515(2), V = 5843.5(11) 3, C26H34CdN4O10, Mr = 674.97, Dc = 1.534 g/cm3, μ(MoKα) = 0.808 mm-1, F(000) = 2768, Z = 8, the final R = 0.0276 and wR = 0.0691 for 5323 observed reflections(I 〉 2σ(I)). The result of thermal analysis shows that 1 is stable under 290 ℃. Moreover, it exhibits blue photoluminescence at room temperature. 展开更多
关键词 4-[(3-pyridyl)methylamino]benzoate acid lvt topology 3-fold interpenetrated luminescent property
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Interpenetrated Structures for Enhancing Ion Diffusion Kinetics in Electrochemical Energy Storage Devices
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作者 Xinzhe Xue Longsheng Feng +9 位作者 Qiu Ren Cassidy Tran Samuel Eisenberg Anica Pinongcos Logan Valdovinos Cathleen Hsieh Tae Wook Heo Marcus A.Worsley Cheng Zhu Yat Li 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第11期718-728,共11页
The architectural design of electrodes offers new opportunities for next-generation electrochemical energy storage devices(EESDs)by increasing surface area,thickness,and active materials mass loading while maintaining... The architectural design of electrodes offers new opportunities for next-generation electrochemical energy storage devices(EESDs)by increasing surface area,thickness,and active materials mass loading while maintaining good ion diffusion through optimized electrode tortuosity.However,conventional thick electrodes increase ion diffusion length and cause larger ion concentration gradients,limiting reaction kinetics.We demonstrate a strategy for building interpenetrated structures that shortens ion diffusion length and reduces ion concentration inhomogeneity.This free-standing device structure also avoids short-circuiting without needing a separator.The feature size and number of interpenetrated units can be adjusted during printing to balance surface area and ion diffusion.Starting with a 3D-printed interpenetrated polymer substrate,we metallize it to make it conductive.This substrate has two individually addressable electrodes,allowing selective electrodeposition of energy storage materials.Using a Zn//MnO_(2) battery as a model system,the interpenetrated device outperforms conventional separate electrode configurations,improving volumetric energy density by 221%and exhibiting a higher capacity retention rate of 49%compared to 35%at temperatures from 20 to 0℃.Our study introduces a new EESD architecture applicable to Li-ion,Na-ion batteries,supercapacitors,etc. 展开更多
关键词 interpenetrated structure 3D printing Electrochemical energy storage Ion diffusion length Inter-electrode distance
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A New 4-Connected Ni^Ⅱ Coordination Polymer with a Novel 3D 2-Fold Interpenetrated Framework
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作者 郭锋 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第2期187-190,共4页
A coordination polymer [Ni(pbc)2(H2O)]n(Hpbc = 3-pyrid-4-ylbenzoic acid) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction,IR and elemental analysis.The crystal is... A coordination polymer [Ni(pbc)2(H2O)]n(Hpbc = 3-pyrid-4-ylbenzoic acid) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction,IR and elemental analysis.The crystal is of monoclinic,space group C2/c with a=19.624(5),b=12.029(5),c=19.452(5)A,β=104.45(5)°,C24H18NiN2O5,Mr=473.11,V=4447(2)A^3,Dc=1.413 g/cm^3,F(000)=1952,μ = 0.91 cm^-1,Z = 8,the final R=0.0424 and wR=0.0871 for 3757 reflections with I〉2σ(I).X-ray diffraction analysis reveals that the pbc-ligands act as diconnectors to link two Ni(Ⅱ) centers and adopt two coordination modes of μ2-N,O and μ2-N,O,O to form infinite wavy nickel-carboxylate chains along the bc plane.The topological analysis of compound [Ni(pbc)2(H2O)]n reveals that it is a typical CdS framework. 展开更多
关键词 coordination polymer 2-fold interpenetrated NICKEL
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Two 3D Metal-organic Frameworks with 4-Fold [2+2]-type Interpenetrated hms Nets Based on a Flexible Tricarboxylic Acid
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作者 樊义康 谢斌 +4 位作者 谢峰 吴威平 邹立科 那仁.格日勒 魏健 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第4期605-614,共10页
Two 3D 4-fold interpenetrated metal-organic frameworks, [Mn(L)(bpy)]n (1) and [Cu(HL)(bpy)]n (2)(H3L = 4,4',4''-(benzene-1,3,5-triyl-tri(methyleneoxy)) tribenzoic acid, bpy = 4,4′-bipyridine), we... Two 3D 4-fold interpenetrated metal-organic frameworks, [Mn(L)(bpy)]n (1) and [Cu(HL)(bpy)]n (2)(H3L = 4,4',4''-(benzene-1,3,5-triyl-tri(methyleneoxy)) tribenzoic acid, bpy = 4,4′-bipyridine), were synthesized under hydrothermal conditions, and characterized by element analyses, IR spectra, thermogravimetric analyses, X-ray powder diffraction and magnetic property studies. The single-crystal X-ray analyses revealed that 1 and 2 are homogeneous. 1 crystallizes in monoclinic, space group Cc with a = 26.794(2), b = 11.6346(10), c = 21.4614(18) ?, β = 91.570(2)°, V = 6687.9(10) A^3, Z = 8, Mr = 736.59, D = 1.463 g·cm^(-3), μ = 0.458 mm^-1c, R(int) = 0.0524, F(000) = 3040, the final R = 0.0844 and wR = 0.2266 for 8092 observed reflections(I 〉 2σ(I)). 2 crystallizes in monoclinic, space group Cc with a = 27.609(12), b = 11.126(10), c = 21.490(9) ?, β = 92.131(2)°, V = 6597(5) A^3, Z = 8, Mr = 746.21, Dc = 1503 g·cm^(-3), μ = 0.726 mm^-1, R(int) = 0.0542, F(000) = 3080, the final R =0.0681 and wR = 0.1831 for 6777 observed reflections(I 〉 2σ(I)). Two compounds are 3D [2+2]-type 4-fold interpenetrated frameworks with(6^3)(6^9.8) hms topology. The magnetic study of compound 2 shows the presence of weak antiferromagnetic interaction between the Cu^Ⅱ ions in 2. 展开更多
关键词 metal-organic frameworks 4 4' 4''-(benzene-1 3 5-triyl-tri(methyleneoxy)) tribenzoic acid 4-fold interpenetration hms networks
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3-fold Morse序列的因子复杂度以及与其相似的一个排列(英文)
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作者 刘秋霞 牛敏 《应用数学》 CSCD 北大核心 2014年第4期899-905,共7页
我们证明3-fold Morse序列的一些性质,并且给出它的子词复杂度公式.此外,通过迭代一个映射产生一个实数序列,我们研究它的一些性质.最终证明这个实数序列与3-fold Morse产生相同的无穷排列.
关键词 3-fold Morse序列 无穷排列 因子复杂度
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Synthesis, Crystal Structure and Gas Adsorption of a Two-fold Interpenetrated Three-dimensional Framework {[Cd(2-NO_2-BDC)(4,4?-DPA)]·(DMF)}_n 被引量:1
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作者 刘瑛 王玉玲 +2 位作者 陈岭 刘庆燕 姚阳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第6期921-928,共8页
The reaction of Cd(NO_3)_2·4H_2O with 4,4?-dipyridylacetylene(4,4?-DPA) and 2-nitroterephthalic acid(2-NO_2-H_2BDC) in DMF/H_2O mixed solvent has afforded a compound {[Cd(2-NO_2-BDC)(4,4?-DPA)]·... The reaction of Cd(NO_3)_2·4H_2O with 4,4?-dipyridylacetylene(4,4?-DPA) and 2-nitroterephthalic acid(2-NO_2-H_2BDC) in DMF/H_2O mixed solvent has afforded a compound {[Cd(2-NO_2-BDC)(4,4?-DPA)]·(DMF)}_n(1). Compound 1 has been characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetry analysis, and IR spectrum. Compound 1 crystallizes in the monoclinic system, space group P21/n, with a = 12.1488(3), b = 14.6689(3), c = 13.1615(3) ?, β = 111.809(3)o, V = 2177.63(9) ?~3, Z = 4, C_(23)H_(18)N_4O_7 Cd, M_r = 574.81, D_c = 1.753 g/cm^3, μ = 8.523 mm^(-1), F(000) = 1152, the final R = 0.0411 and wR = 0.1064 for 3589 observed reflections with I 〉 2s(I). In compound 1, the Cd(Ⅱ) ions are linked by the carboxylate groups of 2-NO_2-BDC ligands to give a two-dimensional layered structure based on the centrosymmetric dinuclear Cd_2(COO)_2 units, which are further connected by the 4,4?-DPA ligands to produce a three-dimensional framework with pcu topology. Careful examination revealed that compound 1 is a 2-fold interpenetrating framework. Furthermore, the gas adsorption properties of 1 for N_2 and CO_2 have also been investigated. 展开更多
关键词 synthesis 2-fold interpenetrating framework crystal structure gas adsorption
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Interpenetrating structure for efficient Sb_(2)Se_(3) nanorod array solar cells loaded with CuInSe_(2) QDs sensitizer
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作者 Cong Liu Zhenxiao Pan +7 位作者 Kai Shen Jianzha Zheng Xiaoyang Liang Hongbing Zhu Fei Guo Zhiqiang Li Ruud E.I.Schropp Yaohua Mai 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第5期521-528,共8页
The strong anisotropic electrical properties of one-dimensional(1 D) nanostructure semiconductors,especially the anisotropic carrier transport, have a negative and significant influence on the performance of solar cel... The strong anisotropic electrical properties of one-dimensional(1 D) nanostructure semiconductors,especially the anisotropic carrier transport, have a negative and significant influence on the performance of solar cells if the nanostructures have random orientation. Considering the advantages of nanorod solar cells in carrier transport, we have achieved growth of vertically aligned Sb_(2)Se_(3) nanorod array with highly(hk1) orientation on Cd S substrate, and constructed superstrate nanorod solar cells for the first time. The Sb_(2)Se_(3) nanorod array solar cells exhibit the more efficient and long-range carrier transport in vertical direction. Furthermore, in order to suppress interface recombination, a CuInSe_(2) quantum dots(QDs) sensitizer has been applied to fill the volume between the nanorods completely, thus forming an interpenetrating nanocomposite structure. The CuInSe_(2) QDs can harvest additional light by absorption of visible light and contribute photocurrent. Meantime, the QDs function as a hole transport material and thus reduce the dependence of lateral transport. Consequently, the interpenetrating nanocomposite CuInSe_(2) / Sb_(2)Se_(3) solar cells display a power conversion efficiency of 7.54% with significant enhancements in the short-circuit current density and open-circuit voltage over pure Sb_(2)Se_(3) nanorod cells. This is the highest efficiency for superstrate solar cells based on Sb_(2)Se_(3) nanorod arrays. 展开更多
关键词 Superstrate solar cells Sb_(2)Se_(3)nanorod arrays Carrier transport interpenetrating structure CuInSe_(2)QDs
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The 4-canonical Maps of 3-folds of General Type
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作者 董佳琦 《Northeastern Mathematical Journal》 CSCD 2006年第1期119-126,共8页
The aim of this paper is to show that the 4-canonical maps of 3-folds of general type is birational when pg≥7 under some given conditions.
关键词 4-canonical map 3-fold general type birational equivalence
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AlSi11/ Si<sub>3</sub>N<sub>4</sub>Interpenetrating Composites Tribology Properties of Aluminum Matris Composites
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作者 Hongyan Wang Shouren Wang +1 位作者 Gaozhi Liu Yingzi Wang 《Advances in Materials Physics and Chemistry》 2012年第4期130-133,共4页
In present work, the metal-ceramic interpenetrating composites (IPCs) as AlSi11/ Si3N4 are fabricated by infiltrating technique. IPCs exhibit special characterization of brittle ceramic reinforced phase introduced by ... In present work, the metal-ceramic interpenetrating composites (IPCs) as AlSi11/ Si3N4 are fabricated by infiltrating technique. IPCs exhibit special characterization of brittle ceramic reinforced phase introduced by ductile metal matrix phase. During the sliding wear processes, IPCs exhibit four wear mechanism such as initial adhesive wear, mixed adhesive and abrasive wear, adhesive wear and final abrasive wear. Reinforcements inhibit plastic flow and restrict propagation of wear cracks. Increase in the volume fraction of reinforcement leads to improvement in the wear resistance. Under higher load and lower round speed conditions, the friction coefficients are lower than that of relative conditions. 展开更多
关键词 interpenetrating COMPOSITES SI3N4 ALUMINUM Network Structure TRIBOLOGY
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The Production of CNT Flower-Like Structures with 3-Fold and 4-Fold Symmetries on a Pt/Si Substrate
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作者 Madjid Arab Marjorie David +1 位作者 Jean-Christophe Valmalette Christophe Ramseyer 《Advances in Chemical Engineering and Science》 2013年第1期78-81,共4页
Carbon nanotubes flower (CNTs-F) films were prepared by catalytic chemical vapor deposition (CVD) on a platinum (Pt) thin layer, supported on a silicon wafer. The products were synthesized from an aerosol composed of ... Carbon nanotubes flower (CNTs-F) films were prepared by catalytic chemical vapor deposition (CVD) on a platinum (Pt) thin layer, supported on a silicon wafer. The products were synthesized from an aerosol composed of ferrocene and toluene, as catalyst and carbon precursor respectively, at 820. The high synthesis temperature induces a modification of a Pt thin layer to a nano-structured island giving rise to the formation of CNTs-F during the following films growth step by CVD process. The suggested mechanism involves the selective diffusion of the catalyst and carbon atoms through the Pt grain boundaries. This results in the appearance of flower-like structures with 3-and 4-fold symmetries. 展开更多
关键词 Carbon Nanotube Aerosol-CVD 3-fold and 4-fold Symmetries Flower Shape
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Two Interpenetrated and Polycatenated Zn(Ⅱ)Coordination Polymers:Syntheses,Structures and Luminescent Properties 被引量:1
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作者 吕丛 陈琳 +1 位作者 刘博 周实 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第11期1786-1794,共9页
Two fascinating Zn(II)entangled coordination polymers,[Zn(eoba)(bbi)];·nH;O(1)and[Zn(boba)(bbi);];(2),(bbi=1,1?-(1,4-butanediyl)-bis(imidazole),H;eoba=4,4?-(ethane-1,2-diyldioxy)-dibenzoic acid,H;... Two fascinating Zn(II)entangled coordination polymers,[Zn(eoba)(bbi)];·nH;O(1)and[Zn(boba)(bbi);];(2),(bbi=1,1?-(1,4-butanediyl)-bis(imidazole),H;eoba=4,4?-(ethane-1,2-diyldioxy)-dibenzoic acid,H;boba=4,4?-(butane-1,4-diyldioxy)-dibenzoic acid),were obtained by hydrothermal technology and characterized by elemental analysis,infrared spectrum,thermogravimetric analysis and single-crystal X-ray diffraction.1 is a rare 2D→3D example with a 3-fold parallel interpenetration and polycatenaned architecture.2 features a scarce2D→2D example with a 3-fold parallel interpenetrating network which possesses polyrotaxane and polycatenane characters.Moreover,the luminescent properties of 1 and 2 have been discussed. 展开更多
关键词 3-fold interpenetration luminescent property crystal structure
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Interpenetrating LiB/Li_(3)BN_(2) phases enabling stable composite lithium metal anode
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作者 Piao Qing Shaozhen Huang +11 位作者 Tuoya Naren Quan Li Haifeng Huang Kecheng Long Zhijian Liu Lin Mei Fu Sun Weifeng Wei Yu Zhang Jianmin Ma Zhibin Wu Libao Chen 《Science Bulletin》 SCIE EI CAS CSCD 2024年第18期2842-2852,共11页
Host-less lithium metal anode generally suffers from large volume changes and serious dendrite growth during cycling,which poses challenges for its practical application.Interpenetrating phase composites with continuo... Host-less lithium metal anode generally suffers from large volume changes and serious dendrite growth during cycling,which poses challenges for its practical application.Interpenetrating phase composites with continuous architectures offer a solution to enhance mechanical properties of materials.Herein,a robust composite Li anode(LBN)material is fabricated through the metallurgical reaction between Li and hexagonal boron nitride(h-BN)with the formation of interpenetrating LiB/Li_(3)BN_(2)phases.As LiB fibers are anchored by Li_(3)BN_(2)granules,the collapse and slippage of LiB fibers are suppressed whilst the mechanical strength and structural stability of LBN are reinforced.By rolling,ultrathin(15μm),freestanding,and electrochemically stable LBN foil can be obtained.The LBN anode exhibits a high average Coulombic efficiency of 99.69%(1 mA cm^(-2),3 mAh cm^(-2))and a long lifespan of 2500 h(1 mA cm^(-2),1 m Ah cm^(-2)).Notably,the LiCoO_(2)(with double-sided load 40 mg cm^(-2))|LBN pouch cell can operate over450 cycles with a capacity retention of 90.1%.The exceptional cycling stability of LBN can be ascribed to the interpenetrating reinforcement architectures and synergistic electronic/ionic conductivity of the LiB/Li_(3)BN_(2)dual-lithiophilic-phases.This work provides a new methodology for thin Li strip processing and reinforced-architecture design,with implications beyond battery applications. 展开更多
关键词 Li metal anode ULTRATHIN interpenetrating Li-B alloy Li_(3)BN_(2)
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3,5-二(吡啶-4-甲氧基)苯甲酸和芳香二羧酸配体构建的具有3,4-连接四重和三重穿插的d^(10)金属配位聚合物(英文)
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作者 王桂仙 曹可利 +1 位作者 王晓娟 冯云龙 《无机化学学报》 SCIE CAS CSCD 北大核心 2016年第3期545-554,共10页
以3,5-二(吡啶-4-甲氧基)苯甲酸(HL)与芳香二羧酸为配体,在水热条件下与Zn(Ⅱ)或Cd(Ⅱ)盐反应得到4个具有3,4-连接多重穿插结构的配位聚合物:[Zn_2L_2(tdc)]_n(1),{[Zn_4L_4(Hhdc)_2]·H_2O}n(2),{[Zn_2L_2(Hhdc)]·H_2O}n(3),{... 以3,5-二(吡啶-4-甲氧基)苯甲酸(HL)与芳香二羧酸为配体,在水热条件下与Zn(Ⅱ)或Cd(Ⅱ)盐反应得到4个具有3,4-连接多重穿插结构的配位聚合物:[Zn_2L_2(tdc)]_n(1),{[Zn_4L_4(Hhdc)_2]·H_2O}n(2),{[Zn_2L_2(Hhdc)]·H_2O}n(3),{[Cd_2L_2(bdtc)(H_2O)]·0.5H_2O}n(4)(H_2tdc=2,5-噻吩二甲酸,H_3hdc=5-羟基间苯二甲酸,H_2bdtc=1,4-苯二硫乙酸)。晶体结构分析表明,聚合物1~3具有3,4-连接四重穿插的三维网络结构,拓扑符号分别为(4.82)(4.85)(1)、(63)(65.8)(2)和(63)(65.8)(3)。4为3,4-连接三重穿插的二维平面结构,拓扑符号为(6~3)(6~6)。测定了配位聚合物1、3和4的热稳定性和荧光性质。 展开更多
关键词 配位聚合物 3 5-二(吡啶-4-甲氧基)苯甲酸 晶体结构 荧光性质
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Synthesis, Crystal Structure, and Topology Analysis of One Novel Interpenetrated 2D Cobalt Coordination Polymer, {[Co(HTCB)(4,4'-btb)]·H_2O}_n 被引量:3
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作者 高艳 范黎明 +2 位作者 宋维阔 刘新征 张修堂 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第9期1333-1338,共6页
One novel cobalt coordination polymer, {[Co(HTCB)(4,4'btb)]'HzO}n (1, H3TCB = 1,3,5-tris(4-carboxyphenyl)benzene, 4,4'-btb = 4,4'-bis(1,2,4-triazol-3-yl)biphenyl), has been synthesized and characterized ... One novel cobalt coordination polymer, {[Co(HTCB)(4,4'btb)]'HzO}n (1, H3TCB = 1,3,5-tris(4-carboxyphenyl)benzene, 4,4'-btb = 4,4'-bis(1,2,4-triazol-3-yl)biphenyl), has been synthesized and characterized by elemental analysis, IR, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. X-ray diffraction analysis reveals that complex 1 is a 2D 2-fold interpenetrated {44,62}-sql [Co(HTCB)(4,4'-btb)] sheet based on the 1D [Co(HTCB)]n chains and 1D [Co(4,4'-btb)]n chains. The crystal of 1 crystallizes in triclinic, space group P1 with a = 9.529(12), b = 13.914(16), c = 14.906(17) A, V= 1903(4) A3, Z = 2, C45H34N6CoO71 Mr= 829.71, Dc = 1.448 g/cm3, F(000) = 858 andμ(MoKa) = 0.514 mm-1. The final R = 0.0655 and wR = 0.1136 for 6603 observed reflections with 1 〉 2a(/) and R = 0.1136 and wR = 0.1747 for all data. 展开更多
关键词 1 3 5-tris(4-carboxyphenyl)benzene 4 4'-bis(1 2 4-triazol-3-yl)biphenyl cobalt interpenetrated topology
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A(3,4)-Connected 3D Heteronuclear Framework with Three Kinds of Discrete Cadmium(Ⅱ) Ions: Synthesis,Crystal Structure and Luminescence Property 被引量:3
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作者 李荣芳 刘新芳 +2 位作者 王玉芳 冯勋 马录芳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第12期1936-1943,共8页
A novel 3D hetero-nuclear framework,namely [K_2Cd_5(Hbptc)_4(H_2O)_(12)·12H_2O]_n(1,H4 bptc = biphenyl-2,3,3?,5?-tetracarboxylic acid),was obtained by hydrothermal reaction. X-ray singlecrystal structur... A novel 3D hetero-nuclear framework,namely [K_2Cd_5(Hbptc)_4(H_2O)_(12)·12H_2O]_n(1,H4 bptc = biphenyl-2,3,3?,5?-tetracarboxylic acid),was obtained by hydrothermal reaction. X-ray singlecrystal structure analysis reveals that polymer 1 crystallizes in orthorhombic,space group Pbcn with a = 26.6152(13),b = 11.7449(5),c = 29.5923(14) ?,V = 9250.3(7) ?~3,C_(64)H_(76)Cd_5K_2O_(56),Mr = 2381.44,Dc = 1.710 g/cm^3,μ(MoK α) = 1.323 mm^(-1),F(000) = 4744,Z = 4,the final R = 0.0668 and wR = 0.1135 for 10613 observed reflections(I 〉 2σ(I)). Polymer 1 displays a 3D network that is built on the unprecedented heterobimetallic [Cd_3Cd_2K] molecular building block with a(3,4)-connected(6·8·8)2(6·6·82·82·126·126) topology which represents a rare 2-fold interpenetrating 3D framework topology network. The luminescence analyses reveal that polymer 1 shows obvious emission at room temperature in the solid state. In addition,it was also characterized by elemental,IR spectra and TG analyses. 展开更多
关键词 hetero-nuclear mental framework Cd/K 2-fold interpenetrating luminescence
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Synthesis and Crystal Structure of an Interpentateing 3-D Framework Constructed from Mixed Ligands
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作者 郭鸿旭 李西忠 +2 位作者 翁文 吴小伟 吴文炳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第6期683-688,共6页
A novel organic-inorganic hybrid compound constructed from mixed ligands, Co3(SIP)2(bipy)4(H2O)6·6.5H2O (H3SIP = 5-sulfoisophthalic acid, bipy = 4,4′-bipyridyl), has been hydrothermally synthesized and c... A novel organic-inorganic hybrid compound constructed from mixed ligands, Co3(SIP)2(bipy)4(H2O)6·6.5H2O (H3SIP = 5-sulfoisophthalic acid, bipy = 4,4′-bipyridyl), has been hydrothermally synthesized and characterized by IR, TGA and single-crystal X-ray diffraction. The crystal belongs to orthorhombic, space group P212121 with a = 11.395(2), b = 19.395(4), c = 30.675(6) A^°, Mr = 1513.05, V= 6779(2) A^°^3, Dc= 1.482 g/cm^3, F(000) = 3120, μ = 0.873 mm^-1, Z= 4, the final R = 0.0439 and wR = 0.119 for 13421 observed reflections with I〉 2σ(I). The structure of the compound presents a 3-D framework containing Co-bipy 1-D chain and 2-D bilayer motifs and carboxylate spacers, and the connection of 1-D chain and 2-D bilayer motifs by carboxylate ligand results in the final open framework with twofold interpenetration net. A probe reaction of the oxidation of benzaldehyde with H2O2 using the title compound as catalyst was carded out in a liquid-solid system, showing that the compound has high oxidative catalytic activity to the reaction. 展开更多
关键词 3-D framework co-coordlnation complex twofold interpenetration net hydrothermal synthesis crystal structure catalytic activity
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The Influence Factors Analysis to Improve the Compatibility and the Mechanical Behavior of IPN, Gradient IPN and BaTiO<sub>3</sub>Filled IPN
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作者 Yudi Guo Dongyan Tang Ying Wang 《Materials Sciences and Applications》 2012年第9期606-611,共6页
Interpenetrating polymer network (IPN), gradient IPN and BaTiO3 filled IPN, composed of poly(ethylene glycol urethane) (PEGPU) and unsaturated polyester resin (UP) curing at room temperatures were prepared. Then the e... Interpenetrating polymer network (IPN), gradient IPN and BaTiO3 filled IPN, composed of poly(ethylene glycol urethane) (PEGPU) and unsaturated polyester resin (UP) curing at room temperatures were prepared. Then the effect of soft/hard segment ratio in polyurethane (PU), component ratio of PU to UP in IPN, adding amount of BaTiO3 in filled IPN, the component sequences and interval times between each IPN for gradient IPN, on morphology and mechanical behavior of IPN and BaTiO3/IPN nanocomposites with different molecular weight of PU were studied systematically. Moreover, the investigation on the relationship between the morphologies and the mechanical properties indicated that the IPN with finer morphology exhibited an excellent consistency of the higher strengths and elongations. 展开更多
关键词 Poly(ethylene GLYCOL Urethane) (PEGPU) GRADIENT interpenetrating Polymer Networks (Gradient IPN) BaTiO3 Morphology Mechanical Property
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Synthesis,Characterizations,Magnetism and Thermal Degradation of a 2-Fold Interpenetrated 3D Cobalt-Organic Framework 被引量:1
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作者 Linyan Yang Liangliang Xin +8 位作者 Wen Gu Shengyun Liao Peiyao Du Jinlei Tian Yanping Zhang Rui Lv Xiaohua Wei Xin Liu Daizheng Liao 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2014年第3期227-232,共6页
A new coordination polymer,[Co_(2)(L)_(2)(4,4'-bipy)]_(n)·3nH_(2)O(1)based on 5-(3-methyl-5-phenyl-4H-1,2,4-tri-azol-4-yl)isophthalic acid(H_(2)L)and 4,4'-bipyridine(4,4'-bipy)has been hydrothermally ... A new coordination polymer,[Co_(2)(L)_(2)(4,4'-bipy)]_(n)·3nH_(2)O(1)based on 5-(3-methyl-5-phenyl-4H-1,2,4-tri-azol-4-yl)isophthalic acid(H_(2)L)and 4,4'-bipyridine(4,4'-bipy)has been hydrothermally synthesized and character-ized by single-crystal X-ray diffraction,XRPD,IR,and elemental analysis.Temperature-dependent magnetic sus-ceptibility and thermal degradation for 1 were also studied.The asymmetric unit of compound 1 consists of two crystallographically independent Co(II)ion,two L^(2−)ligand,one 4,4'-bipy ligand,and three lattice water molecules.The 2D triangle networks were linked by the bridging 4,4'-bipy ligand to give rise to a 2-fold interpenetrated 3D architecture.The simplest cyclic motif of the 2D networks is a triangle ring consisting of three Co(II)cations and three L^(2−)ligands.So we can define Co(II)ions as 4-connected nodes and the L^(2−)ligands as 3-connected nodes.Thus,the 3D structure can be described as a 2-fold parallel interpenetrated ins InS 3,4-conn topology. 展开更多
关键词 cobalt-organic framework 2-fold interpenetrated MAGNETISM thermal degradation
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一个由4,4′-(丁烷-1,4-二氧基)-二苯甲酸和双咪唑配体构筑的三重穿插金属有机骨架化合物(英文) 被引量:2
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作者 王庆伟 齐晓飞 +4 位作者 陈琳 王丽娟 李佳 王文晶 刘博 《无机化学学报》 SCIE CAS CSCD 北大核心 2014年第8期1920-1924,共5页
采用水热法合成了1个二维缠结金属有机框架化合物[Cu(bbi)0.5(boba)]n(1)(bbi=1,1′-(1,4-丁烷基)-二(咪唑);H2boba=4,4′-(丁烷-1,4-二氧基)-二苯甲酸),并通过元素分析、红外光谱和单晶X-射线衍射对其进行了结构表征。结构分析显示:化... 采用水热法合成了1个二维缠结金属有机框架化合物[Cu(bbi)0.5(boba)]n(1)(bbi=1,1′-(1,4-丁烷基)-二(咪唑);H2boba=4,4′-(丁烷-1,4-二氧基)-二苯甲酸),并通过元素分析、红外光谱和单晶X-射线衍射对其进行了结构表征。结构分析显示:化合物1是具有聚轮烷和聚锁烃结构特征的三重平行穿插网络。此外还研究了它的荧光和热稳定性。 展开更多
关键词 三重穿插 4 4’-(丁烷-1 4--二氧基)-二苯甲酸 晶体结构
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