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Synthesis, Structure and Fluorescence of a Copper(II) Complex [Cu_2(bipy)_2(Hpht)_2Cl](Hpht)(bipy=2,2'-Bipyridine,H_2pht=o-Phthalic Acid) 被引量:4
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作者 李强 郑发鲲 +3 位作者 蔡丽珍 陈文通 郭国聪 黄锦顺 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第3期354-358,共5页
The title complex [Cu2(bipy)2(Hpht)2Cl](Hpht) (bipy = 2,2?-bipyridine, H2pht = o-phthalic acid) has been synthesized in the NaOH aqueous solution of CuCl2, Gd(NO3)3, bipy and H2pht, and its crystal structure was det... The title complex [Cu2(bipy)2(Hpht)2Cl](Hpht) (bipy = 2,2?-bipyridine, H2pht = o-phthalic acid) has been synthesized in the NaOH aqueous solution of CuCl2, Gd(NO3)3, bipy and H2pht, and its crystal structure was determined by single-crystal X-ray diffraction method. It crys- tallizes in triclinic, space group P1, C44H31ClCu2N4O12, Mr = 970.26, a = 8.175(2), b = 16.254(4), c = 16.946(4) ?, α = 62.966(6), β = 84.833(8), γ = 84.348(8)°, V = 1993.4(8) ?3, Z = 2, Dc = 1.616 g/cm3, F(000) = 988 and μ = 1.207 mm-1. The final R = 0.0429 and wR = 0.0843 for 5682 observed reflections with I > 2σ(I). Each copper(II) atom displays a distorted square-pyramidal geometry with two nitrogen atoms of one chelate 2,2?-bipy molecule, two oxygen atoms from two different bridging carboxylate groups of Hpht- and one bridging chloride atom occupying the apical position. The two copper(II) atoms are connected by a μ2-Cl atom and two bridging Hpht- ligands in a syn-syn coordination mode to form an isolated dinuclear unit. The molecular structure is extended to a one-dimensional wavy chain through hydrogen bonds. The title complex exhibits blue fluorescent emission at 443 nm (λex = 372 nm) in the solid state at room temperature. 展开更多
关键词 copper(ii) complex crystal structure SYNTHESIS LUMINESCENCE
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Hydrothermal Synthesis and Structure of a Copper(II) Complex, [Cu(4,4'bpy)(H_2O)_3]SO_42H_2O 被引量:3
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作者 LIN Bi-Zhou② LIU Pei-De (Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou, Fujian 362011, China) 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2003年第6期673-676,共4页
The title complex [Cu(4,4?bpy)(H2O)3]SO42H2O (Mr = 405.86) was synthesized under hydrothermal conditions and its crystal structure has been determined by X-ray diffraction. It crystallizes in the hexagonal system, spa... The title complex [Cu(4,4?bpy)(H2O)3]SO42H2O (Mr = 405.86) was synthesized under hydrothermal conditions and its crystal structure has been determined by X-ray diffraction. It crystallizes in the hexagonal system, space group P61 with a = 11.1870(4), c = 21.578(1) ? V = 2338.6(2) ?, Dc = 1.729 g/cm3, Z = 6, m(MoKa) = 1.583 mm-1 and F(000) = 1254. The final R and wR are 0.0253 and 0.0416 for 1458 observed reflections with I≥2s(I), respectively. It was revealed that the square pyramidal Cu(II) sites are linked through 4,4?bipyridine groups, forming infinite one-dimensional chains, with the sulfate anions and lattice water molecules occupying the inter-chain positions. During the electrostatic interactions, there exist O…O hydrogen bonds and p-p stacking interactions between the parallel aromatic bipy rings in the structure. 展开更多
关键词 hydrothermal synthesis crystal structure copper complexes
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Synthesis and Crystal Structure of a New Copper(II) Complex with 4-Cyanobenzoic Acid 被引量:6
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作者 LI Yan WU A-Qing +3 位作者 ZHENG Fa-Kun GUO Guo-Cong LU Can-Zhong HUANG Jin-Shun 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第11期1281-1285,共5页
A new Cu(Ⅱ) complex [Cu(4-cba)(1,10-phen)(H2O)2](NO3) (4-Hcba = 4-cyanobenzoic acid) has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characteriz... A new Cu(Ⅱ) complex [Cu(4-cba)(1,10-phen)(H2O)2](NO3) (4-Hcba = 4-cyanobenzoic acid) has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characterized by single-crystal X-ray diffraction. Crystallographic data: C20H16CuN4O7, Mr= 487.91, triclinic, space group PI, a = 7.8420(2), b = 9.1070(2), c = 15.1140(6) A, a = 76.889(9), β = 81.332(11), γ = 74.844( 11)°, V = 1009.89(5) A^3, Z = 2, Dc = 1.605 g/cm^3, F(000) = 498, μ = 1.134 mm^-1, the final R = 0.0379 and wR = 0.0865 for 2977 observed reflections with 1 〉 2σ(Ⅰ). The Cu(Ⅱ) atom is coordinated by two terminal water molecules, one chelating 1,10-phen molecule and one monodentate 4-cba ligand to form a slightly distorted square pyramid. The title complex molecules are connected through hydrogen bonds and π-π stacking interactions to generate a 2D layered network. The thermogravimetric analysis of the title complex has also been discussed. 展开更多
关键词 copper(Ⅱ) complex 4-cyanobenzoic acid crystal structure hydrogen bonds π-π stacking
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Synthesis, structure, DNA binding and cleavage activity of a new copper(II) complex of bispyridylpyrrolide 被引量:2
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作者 闵睿 胡晓惠 +1 位作者 易小艺 张寿春 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第5期1619-1625,共7页
A copper-bispyridylpyrrolide complex [Cu(PDPH)Cl](PDPH = 2,5-bis(2′-pyridyl)pyrrole) was synthesized and characterized. The complex crystallizes in the orthorhombic system with space group Pccn, a = 0.9016(3) nm, b =... A copper-bispyridylpyrrolide complex [Cu(PDPH)Cl](PDPH = 2,5-bis(2′-pyridyl)pyrrole) was synthesized and characterized. The complex crystallizes in the orthorhombic system with space group Pccn, a = 0.9016(3) nm, b = 1.0931(4) nm, c =2.5319(8) nm, and V = 2.4951(15) nm3. The copper center is situated in a square planar geometry. The interaction of the copper(II)complex with calf thymus DNA(CT-DNA) was investigated by electronic absorption, circular dichroism(CD) and fluorescence spectra. It is proposed that the complex binds to CT-DNA through groove binding mode. Nuclease activity of the complex was also studied by gel electrophoresis method. The complex can efficiently cleave supercoiled p BR322 DNA in the presence of ascorbate(H2A) via oxidative pathway. The preliminary mechanism of DNA cleavage by the complex with different inhibiting reagents indicates that the hydroxyl radicals were involved as the active species in the DNA cleavage process. 展开更多
关键词 copper complex bispyridylpyrrolide DNA-BINDING DNA cleavage
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Hydrothermal Synthesis,Crystal Structure and Electrochemical Properties of the Copper(II) Complex [Cu_4O_4(phen)_4(ClC_6H_4COO)_2(H_2O)_2]·(H_2O)_3 被引量:3
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作者 LI Wei LI Chang-Hong +1 位作者 YANG Ying-Qun KUANG Yun-Fei 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第11期1331-1336,共6页
The title complex of copper(Ⅱ) with m-chlorobenzoic acid, 1,10-phenanthroline (phen) and copper perchlorate has been synthesized and characterized in the solvent mixture of water and methanol. Crystal data for th... The title complex of copper(Ⅱ) with m-chlorobenzoic acid, 1,10-phenanthroline (phen) and copper perchlorate has been synthesized and characterized in the solvent mixture of water and methanol. Crystal data for this complex: triclinic, space group PI^-, a = 1.06853(12), b = 1.30740(16), c = 1.49546(17) nm, α= 101.791(2),β = 103.413(2), γ = 105.815(2)°, V= 1.8736(4) nm^3, Mr = 904.67, Dc = 1.604 g/cm^3, Z = 2,/7(000) = 924,μ = 1.34 mm^-1, GOOF = 1.049, the final R = 0.0324 and wR = 0.0797. The structure analysis shows that a chair-like structure [Cu4O4] is defined by three quadrilaterals shaped by four copper and four oxygen atoms, and every copper ion is coordinated by three oxygen atoms from three wate: molecules and two nitrogen atoms from one 1,10-phenanthroline molecule, giving a distorted square-pyramidal coordination geometry. The CV analysis results indicate that the electron transfer in the electrode reaction is quasi-reversible. 展开更多
关键词 copper(Ⅱ) complex hydrothermal synthesis electrochemical property
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Synthesis, Structure and Spectral Characterization of a Discrete Binuclear Copper (II) Complex 被引量:1
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作者 王瑞虎 苏伟平 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2001年第1期37-39,共3页
A discrete binuclear copper (II) complex containing Cu 2O 2 unit has been synthesized by the reaction of Cu (ClO 4) 2·6H 2O with 2 aminopyridine in the CH 3OH solution and characterized by X ray diffracti... A discrete binuclear copper (II) complex containing Cu 2O 2 unit has been synthesized by the reaction of Cu (ClO 4) 2·6H 2O with 2 aminopyridine in the CH 3OH solution and characterized by X ray diffraction study and IR spectroscopy. The crystal is monoclinic, space group: P2 1/n, with unit cell parameters: a=8.2952(2), b=18.4633(3), c=10.5049(2) . β=108.965(1)°, V=1521.56(5) 3, Z=2, C 22 H 30 N 8O 10 Cl 2Cu 2, M r =764.52, D c =1.669 Mg/m 3, F(000)=780, μ (Mo Kα )=8.60, T =293(2)K, final R=0.0623, wR =0.1536 for 2660 observed reflections with I>2.0σ(I ). The centrosymmetric complex Cu 2(CH 3O) 2(C 5H 6N 2) 4(ClO 4) 2 comprises a pair of Cu(II) atoms bridged by two methanoxo and N coordination 2 aminopyridine. The Cu(II)…Cu(II) distance is 3\^002(1). 展开更多
关键词 binuclear copper (ii) complex SYNTHESIS crystal struct
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Synthesis and Crystal Structure of a Copper(II) Complex with 2,4-Dihydroxybenzylidene Benzoylhydrazone Ligand 被引量:2
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作者 卢文贯 刘宏文 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第9期1078-1082,共5页
A new copper(Ⅱ) complex with formula CuL(py), where L^2- is the dianion of 2,4-dihydroxybenzylidene benzoylhydrazone, has been synthesized and characterized by IR spectra and single-crystal X-ray diffraction meth... A new copper(Ⅱ) complex with formula CuL(py), where L^2- is the dianion of 2,4-dihydroxybenzylidene benzoylhydrazone, has been synthesized and characterized by IR spectra and single-crystal X-ray diffraction method. The crystal belongs to monoclinic, space group P2 1/c with a=0.9630(4), b=1.4808(6), c=1.2320(5) nm, β=104.969(6)°, V=1.6973(Ⅱ) nm^3, Z=4, Dc=1.553 g/cm^3,μ(MoKa)=1.311 mm^-1, F(000)=812, R=0.0694 and wR=0.1727 for 1511 observed reflections (I〉2σ(I)). The crystal structure analysis indicates that the copper(Ⅱ) ion lies in a distorted square-planar environment composed of two oxygen atoms, one nitrogen atom from the tridentate acylhydrazone Schiff base ligand L^2- and one nitrogen atom from the pyridine ligand. Two adjacent molecules are connected via weak Cu…O bonding interactions to form dimers, which are further linked to generate a two-dimensional layer structure via interdimeric hydrogen bonds. 展开更多
关键词 Schiff base acylhyldrazone copper(Ⅱ) complex crystal structure
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Synthesis and Crystal Structure of a Copper(II) Complex with Benzilic Acid and 1,10-Phenanthroline 被引量:1
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作者 谢和平 王颖 李玉林 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第7期801-804,共4页
A new complex [Cu(phen)3][(C6H4)2C(OH)COO]2·6H2O was prepared by selfassembly of benzilic acid, 1,10-phenanthroline (phen), and copper perchlorate. It crystallizes in triclinic, space group P1-, with a = ... A new complex [Cu(phen)3][(C6H4)2C(OH)COO]2·6H2O was prepared by selfassembly of benzilic acid, 1,10-phenanthroline (phen), and copper perchlorate. It crystallizes in triclinic, space group P1-, with a = 1.14661(17), b = 1.6455(2), c = 1.6457(2) nm, α= 74.779(2), β = 74.904(3), γ = 84.424(3)°, V = 2.8914(7) nm^3, Dc = 1.340 g/cm^3, Z = 2, F(000) = 1218, GOOF = 1.018, the final R = 0.0643 and wR= 0.1633. The crystal structure shows that the copper ion is coordinated with six nitrogen atoms from six 1,10-phenanthroline molecules, forming a distorted octahedral coordination geometry. 展开更多
关键词 copper(Ⅱ) complex crystal structure
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Synthesis,Structure and Properties of a Novel Copper(Ⅱ)-2,2'- biimidazole Complex-supported Compound:[Cu(H_2biim)_2]{[Cu(H_2biim)_2 ]_2[H_(10)W_(12)O_(44)]}·8H_2O 被引量:1
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作者 陈伟鹏 仪晓凤 +1 位作者 桑瑞利 徐立 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第11期1696-1702,共7页
A new copper(II)-2,2'-biimidazole metal-organic POMs-supported compound [Cu(H2biim)2]{[Cu(H2biim)212[H10W12O44]}'8H2O (H2biim = 2,2'-biimidazole) has been success- fully synthesized under hydrothermal condi... A new copper(II)-2,2'-biimidazole metal-organic POMs-supported compound [Cu(H2biim)2]{[Cu(H2biim)212[H10W12O44]}'8H2O (H2biim = 2,2'-biimidazole) has been success- fully synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and TG. The crystal adopts space group Pi with a = 11.800(2), b = 13.437(3), c = 13.685(3) A, V = 1922.5(7) A3, D,. = 3.507 g/cm3, C36H62Cu3N24W12O52, M,. = 4059.92, F(000) = 1837,μ = 18.796 mm-1, Z = 1, R = 0.0579 and wR = 0.1465 for 8734 observed reflections (I 〉 2σ(I)). X-ray crystallography analysis exhibits that the title compound consists of one [H10W12044]6- polyanion and three [Cu(H2biim)2] units. And significant π-π stacking interactions and intermolecular O-H-,.O or N-H.'-O hydrogen-bonding interactions lead to a three-dimensional supramolecular framework. Thermal stability and magnetic property of the complex have also been investigated. 展开更多
关键词 polyoxometalates inorganic-organic hybrid Cu(ii complex π...π stacking interactions HYDROGEN-BONDING
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Synthesis,Crystal Structure and Catalytic Performance of the Trifluoro-substituted Mono(β-diiminato)Copper(Ⅱ)Complex 被引量:2
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作者 游向前 王利伟 +3 位作者 尤庆亮 李廷成 张爱清 谢光勇 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第1期107-112,共6页
Two novel copper complexes with methyl or trifluoro-substituted mono-β-diiminato ligands and one acetoxyl anion were synthesized and characterized by IR spectroscopy and elemental analysis for the first time. The str... Two novel copper complexes with methyl or trifluoro-substituted mono-β-diiminato ligands and one acetoxyl anion were synthesized and characterized by IR spectroscopy and elemental analysis for the first time. The structure of complex 2 bearing trifluoro substituents was further confirmed by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 7.377(4), b = 11.727(6), c = 12.913(7) ?, α = 116.569(6), β = 98.829(7), γ = 96.520(6)°, V = 966.2(8) ?3, Z = 2, Mr = 479.86, Dc = 1.649 g/cm3, F(000) = 482, μ = 1.205 mm-1, the final R = 0.0370 and w R = 0.0903 for 3430 observed reflections with I 〉 2σ(I). These mono-β-diiminato copper complexes can effectively catalyze methacrylate(MA) polymerization when activated by MMAO. The introduction of fluoro groups into the N-aryl ring of β-diiminato ligands can greatly increase the catalytic activity of copper complexes as well as the molecular weight of PMA. 展开更多
关键词 copper(Ⅱ) complex crystal structure β-diimine methacrylate polymerization
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Crystal Structure and Inhibitory Activity against Xanthine Oxidase of Bis(μ_2-chloro)-chloro-(μ-N,N'-(2-pyridylmethylene) Furanmethanoamine Copper(II) Complex
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作者 方瑞琴 史大华 +1 位作者 石磊 朱海亮 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第3期345-349,共5页
A chloro-bridged dinuclear copper(H) complex with ligand 2-pyridylme-thylene- furfurylamine has been synthesized and characterized by single-crystal X-ray diffraction, and its inhibitory activity on xanthine oxidase... A chloro-bridged dinuclear copper(H) complex with ligand 2-pyridylme-thylene- furfurylamine has been synthesized and characterized by single-crystal X-ray diffraction, and its inhibitory activity on xanthine oxidase (XO) was also evaluated. It crystallizes in the triclinic system, space group P 1 with a = 8.0441(16), b = 8.5663(17), c = 10.060(2)A, α = 77.52(3), β = 72.04(3), γ = 70.12(3)°, V = 615.3(2)A^3, Z = 1, Dc = 1.731 g/cm^3, F(000) = 322, the final R = 0.0401 and wR = 0.0934 for 1971 observed reflections with I 〉 2σ(I). X-ray analysis reveals that the Cu(II) cation is five-coordinated by two N atoms of Schiff base and three Cl anions. The C-H…Cl intermolecular and intramolecular hydrogen bonds connect the molecules to form a three-dimensional network. This copper(II) complex shows more potent inhibitory activity against XO with IC50 = 3.48μM than the standard inhibitor allopurinol. 展开更多
关键词 dinudear copper(ii complex 2-pyridineaidehyde FURFURYLAMINE Schiff base inhibitory activity against XO
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Synthesis and Characterization of Nickel(II) and Copper(II) Complexes with Schiff Base (1R,2R)-(-)-Diaminocyclohexane-N,N'-bis(3-tert-butyl-5-(4'-benzoic acid)-salicylidene)
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作者 朱成峰 袁国赞 +1 位作者 盛恩宏 崔勇 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第10期1304-1310,共7页
Two homochiral metallosalen complexes, Ni(salen) (salen = (1R,2R)-(-)-diamino- cyclohexane-N,N′-bis(3-tert-butyl-5-(4′-benzoic acid)-salicylidene) 1 and Cu(salen) 2, have been synthesized and characteri... Two homochiral metallosalen complexes, Ni(salen) (salen = (1R,2R)-(-)-diamino- cyclohexane-N,N′-bis(3-tert-butyl-5-(4′-benzoic acid)-salicylidene) 1 and Cu(salen) 2, have been synthesized and characterized by IR, microanalysis, TGA, powder and single-crystal X-ray crystallography. Both 1 and 2 crystallize in orthorhombic space group P21212 with Z = 4. For 1, a = 12.082(2), b = 15.447(3), c = 18.784(4)A^°, V= 3505.7(12)A^°3, Mr = 731.50, Dc = 1.386 g/cm^3, μ = 0.606 mm^-1, F(000) = 1544, the final GOOF = 1.043, R = 0.0496 and wR = 0.1248 for 4791 observed reflections with I 〉 2σ(I). For 2, a = 12.181(2), b = 15.501(3), c = 18.877(4) A^°, V = 3564.3(12)A^°3, Mr = 736.33, Dc = 1.372 g/cm^3, μ = 0.665 mm^-1, F(000) = 1548, the final GOOF = 1.062, R = 0.0575 and wR = 0.1508 for 4562 observed reflections with I 〉 2σ(I). The crystal structures of 1 and 2 are isostructural with very similar supramolecular structures. An infinite two-dimensional network is generated by hydrogen bonding interactions and intermolecular π…π interactions. 展开更多
关键词 crystal structure SALEN niekel(Ⅱ) complex copper(ii complex
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Synthesis and Crystal Structure of Copper(II) Complex with N-Acetoxyl-picolinamide
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作者 杜巧云 曹佃省 刘志红 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第2期244-248,共5页
Using Cu(II) as the template, a complex {[Cu2L2(H2O)2]·4H2O}n (L = N-acetoxyl- picolinamide) has been successfully synthesized and characterized by single-crystal X-ray diffrac- tion. The crystal is of monoclin... Using Cu(II) as the template, a complex {[Cu2L2(H2O)2]·4H2O}n (L = N-acetoxyl- picolinamide) has been successfully synthesized and characterized by single-crystal X-ray diffrac- tion. The crystal is of monoclinic, space group C2/c, with a = 24.144(5), b = 7.1622(14), c = 17.283(4) ?, C16H24Cu2N4O12, Mr = 591.47, β = 131.73(3)o, V = 2230.3(8) ?3, Z = 4, Dc = 1.761 g/cm3, F(000) = 1208, μ = 1.978 mm?1, R = 0.0400 and wR = 0.1099. The copper (II) ion is five- coordinated with a distorted square pyramidal geometry. The complex can be viewed as a one- dimensional chain structure by carboxylic bridges among copper atoms. In the complex there exist hydrogen bonding interactions to stabilize the structure. 展开更多
关键词 picolinic acid copper(ii) complex crystal structure template reaction
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Efficient Cleavage of DNA by the Novel Copper (II) Complex Derived From 2,2'-Pyridil Ligand
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作者 Rui REN1,3, Pin YANG2 1Biotechnology laboratory, Shanxi University, Taiyuan 030006 2Institute of Molecular Science, Shanxi University, Taiyuan 030006 3State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第6期495-496,共2页
Copper (II) complex derived from 2, 2'-pyridil ligand has been, demonstrated to cleave efficiently DNA at micromolar concentrations at room temperature and pH 7.25.
关键词 copper (ii) complex DNA efficient cleavage
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Synthesis and Crystal Structure of the Copper(II)Complex with N,N'-Cyclohexanebis(3- formyl- 5-tert-butyl-salicylaldimine)
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作者 刘涛 阮文娟 +3 位作者 张玉玲 朱志昂 陈荣悌 杨志雄 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2001年第3期199-202,共4页
A mononuclear copper(II) complex CuL with a Schiff-base L (H2L = N,N(- cyclohexanebis(3-formyl-5-tert-butyl-salicylaldimine)) has been synthesized and characterized. X-ray diffraction analysis at room temperature indi... A mononuclear copper(II) complex CuL with a Schiff-base L (H2L = N,N(- cyclohexanebis(3-formyl-5-tert-butyl-salicylaldimine)) has been synthesized and characterized. X-ray diffraction analysis at room temperature indicates that the complex (Cu C30H36N2O4, Mr = 552.15) crystallizes in tetrahedral system, space group P41 with a = 13.4685(6), c = 31.326(2) ?, V = 5682.5(5) ?3, Z = 8, Dc = 1.291 g/cm3, F(000) = 4656, μ(MoK() = 0.805 mm-1. The final R and Rw factors are 0.0421 and 0.0815, respectively with 4435 observed reflections. The title complex is a neutral molecule in which the ligand is doubly deprotonated, forming a four-coordinated Cu(II) complex by nitrogen and oxygen donors of the ligand and the coordination geometry of Cu(II) could be considered as an approximately planar configuration. There are two independent molecules, having a transoid arrangement in this structure. 展开更多
关键词 crystal structure copper(ii) complex Schiff-base ligand
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SYNTHESIS AND STRUCTURE OF A 2D SHEET-LIKE COPPER(II) COMPLEX WITH BRIDGING PYRIDINE-4-CARBOXYLATE AND TRANS-OXAMIDATE LIGANDS
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作者 Mei Fang Wu Zhong Ning CHAN +1 位作者 Jun QIU and Wen Xia TANG(State Key Laboratory of Coordination Chemistry,Nanjing University. Nanjing 210008)Zhe Ming WANG Shi Xiong LIU and Jin Ling HUANG(Center Laboratory, Fuzhou University, Fuzhou 350002) 《Chinese Chemical Letters》 SCIE CAS CSCD 1994年第8期711-712,共2页
A complex polymer [Cu2(oxen)(pic)(H20)]n(Clo4)·2nHH2O, there oxen and pic are N.N' -bis(2aminoethyt )oxamide and Pyridine-4-carboxytate, respectivety, was synthesized. It crystallizes in the monoctinic space ... A complex polymer [Cu2(oxen)(pic)(H20)]n(Clo4)·2nHH2O, there oxen and pic are N.N' -bis(2aminoethyt )oxamide and Pyridine-4-carboxytate, respectivety, was synthesized. It crystallizes in the monoctinic space group P21/c, with a=10.420(2) A. b=13. 118(2) A, c=14 .863(5) A. β=93.05(2)°, and z=4. The structure of this complex consists of 2D network of copper(II) ions bridged by bis-tridentate oxen in transconformation, and by pyridine-4-carboxylate in which the pyridine ring acts as a monodentate group whereas the carboxylate as a tridentate group and bonds to three different copper centres in a novel fashion. The repeating asymmetric unit is a binuclear copper(II) fragment with one of the copper centre locating in a lengthening octahedrat environment, whereas the other in a distorted tetragonal pyramid geometry. 展开更多
关键词 ii copper complex LIKE WITH AND BRIDGING
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Elimination of GGTA1,CMAH,β4GalNT2 and CIITA genes in pigs compromises human versus pig xenogeneic immune reactions
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作者 Jing Xu Jilong Ren +11 位作者 Kai Xu Minghui Fang Meina Ka Fei Xu Xin Wang Jing Wang Zhiqiang Han Guihai Feng Ying Zhang Tang Hai Wei Li Zheng Hu 《Animal Models and Experimental Medicine》 CAS CSCD 2024年第4期584-590,共7页
Background:Pig organ xenotransplantation is a potential solution for the severe organ shortage in clinic,while immunogenic genes need to be eliminated to improve the immune compatibility between humans and pigs.Curren... Background:Pig organ xenotransplantation is a potential solution for the severe organ shortage in clinic,while immunogenic genes need to be eliminated to improve the immune compatibility between humans and pigs.Current knockout strategies are mainly aimed at the genes causing hyperacute immune rejection(HAR)that occurs in the first few hours while adaptive immune reactions orchestrated by CD4 T cell thereafter also cause graft failure,in which process the MHCⅡmolecule plays critical roles.Methods:Thus,we generate a 4-gene(GGTA1,CMAH,β4GalNT2,and CIITA)knockout pig by CRISPR/Cas9 and somatic cell nuclear transfer to compromise HAR and CD4 T cell reactions simultaneously.Results:We successfully obtained 4KO piglets with deficiency in all alleles of genes,and at cellular and tissue levels.Additionally,the safety of our animals after gene editing was verified by using whole-genome sequencing and karyotyping.Piglets have survived for more than one year in the barrier,and also survived for more than 3 months in the conventional environment,suggesting that the piglets without MHCⅡcan be raised in the barrier and then gradually mated in the conventional environment.Conclusions:4KO piglets have lower immunogenicity,are safe in genomic level,and are easier to breed than the model with both MHCⅠandⅡdeletion. 展开更多
关键词 CD4 T cell genetically edited pig immune rejection major histocompatibility complex ii XENOTRANSPLANTATION
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CRYSTAL STRUCTURE OF THE COPPER(II) COMPLEX OF NEW MACROCYCLIC DIOXOTETRAAMINE LIGAND FUNCTIONALIZED WITH 8-METHYL QUINOLINE PENDANT
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作者 Xian He BU Dao Li AN Man Xue YUAN and Yun Ti CHEN (Department of Chemistry, Nankai University,Tianjin 300071) 《Chinese Chemical Letters》 SCIE CAS CSCD 1994年第12期1055-1056,共2页
The copper (II) complex (1) of a new Iigand 4- (quinolin-8-ylmethyl)- 1, 4, 7. 10-tetraazacycoltridecane-11. 13-dione (L) has been syntehsized and its crystal structure determined. It is of orthorhomic crystal system ... The copper (II) complex (1) of a new Iigand 4- (quinolin-8-ylmethyl)- 1, 4, 7. 10-tetraazacycoltridecane-11. 13-dione (L) has been syntehsized and its crystal structure determined. It is of orthorhomic crystal system and Pcad space group with a=16.260 (3), b=7. 739 (2). c=27. 530 (9) A, Mr=416. 97, Z=8. Dx=1. 595 g/cm3,μ=12. 876 cm-1, and F(000)=1736. The final R factor is 0. 061 for 2594 observed reflections with I>3σ(I). The Cu .atom is five coordinated to form a distorted square pyramid geometry in which N(11) of the pendant is at apical site. 展开更多
关键词 ii THE OF NEW STRUCTURE complex copper
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DNA Cleavage of the Copper(II) Complexes with a Polyamine Ditopic Ligand
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作者 YiBinWEI PinYANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第4期537-540,共4页
A new binuclear complex [Cu2L(OH)](ClO4)3·2H2O has been synthesized and characterized, where L=2,6-bis{[bis-(2-aminoethyl)amino]methyl}-benzene. In the presence of 0.5 mmol/L complex at pH 8.10 and 37°C, t... A new binuclear complex [Cu2L(OH)](ClO4)3·2H2O has been synthesized and characterized, where L=2,6-bis{[bis-(2-aminoethyl)amino]methyl}-benzene. In the presence of 0.5 mmol/L complex at pH 8.10 and 37°C, the complex can efficiently cleavage pBR322 DNA with a rate constant kobs of 1.35×10-4 s-1. The cleavage occurred by a non-oxidative mechanism showing activity to be dependent on pH. 展开更多
关键词 Hydrolytic cleavage copper complex binuclear.
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Synthesis and Crystal Structure of a Novel Copper (II) Complex with Acetylenedicarboxylate and 2, 2′-Bipyridine
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作者 Ming Xing LI Min SHAO +4 位作者 Hui DAI Bao Li AN Wen Cong LU Yu ZHU Chen Xia DU 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第10期1405-1408,共4页
The title compound [Cu (ADC) (2, 2'-bipy)]n (ADC = C2 (COO)2^2.) was prepared and characterized by elemental analysis, IR spectroscopy, X-ray analysis, respectively. The analysis of the crystal structure reve... The title compound [Cu (ADC) (2, 2'-bipy)]n (ADC = C2 (COO)2^2.) was prepared and characterized by elemental analysis, IR spectroscopy, X-ray analysis, respectively. The analysis of the crystal structure reveals that the copper atom is five-coordinated with two nitrogen atoms of 2, 2'-bipy and three oxygen atoms of different acetylenedicarboxylate dianions. ADC as bridging ligands link the Cu (Ⅱ) ions, forming coordination polymer structure. 展开更多
关键词 copper complex crystal structure coordination polymer acetylenedicarboxylate acid.
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