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Synthesis, structure, DNA binding and cleavage activity of a new copper(II) complex of bispyridylpyrrolide

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Journal of Central South University 2015年第5期22卷 1619-1625页

作者：闵睿胡晓惠易小艺张寿春 School of Chemistry and Chemical Engineering Central South University

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.

关键词： copper complex bispyridylpyrrolide DNA-binding DNA cleavage

Synthesis and Crystal Structure of the copper complex {[Cu(CH_3COO)_2(bbtz)](H_2O)_2}_n

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Chinese Journal of Structural Chemistry 2005年第10期24卷 1129-1132页

作者： ZHANG Yong ZHANG Yu-Mei LIU Xun-Gao LI Bao-Long Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry and Chemical Engineering Suzhou University Suzhou 215123 China

The new copper complex { [Cu（CH3COO）2（bbtz）]（H2O）2 }, 1 （bbtz = 1,4-bis（ 1,2,4- triazol-1-ylmethyl）benzene） was synthesized and the structure was determined by single-crystal X-ray diffraction. Crystal data： C16H22CuN6O6, monoclinic, space group P21/n, a = 12.589（5）, b = 6.455（2）, c = 12.677（5） A, β= 98.748（9）°, V= 1018.2（7） A^3, Mr = 457.95, Z = 2, Dc= 1.494 g/cm^3, F（000） = 474, μ = 1.118 mm^-1, R = 0.0463 and wR = 0.0939 for 1971 observed reflections with I 〉 2σ（I）. The crystal structure of 1 is a one-dimensional chain via the bridging flexible ligand bbtz.

关键词： crystal structure copper complex triazole ligand synthesis

Synthesis, Structure and Properties of a copper complex Cu_2(μ-PhCOO)_2(μ-CH_3COO)_2(CH_3OH)_2

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Chinese Journal of Structural Chemistry 2006年第12期25卷 1461-1464页

作者：王丹刘世雄 Central Laboratory Fuzhou University Fuzhou

The title complex Cu2（μ-PhCOO）2（μ-CH3COO）2（CH3OH）2 1 （C20H24Cu2O10, Mr = 551,47） has been synthesized by the reaction of Cu（OAc）2·H2O with benzoic acid, and its crystal structure was determined by X-ray diffraction method. complex 1 belongs to orthorhombic, space group Pbca with a = 13.083（6）, b=8.078（4）, c = 21.566（2）A, V= 2279（2） A3, Z = 4, Dc= 1,607 g/cm^3, F（O00） = 1128,μ（MoKα） = 1.918 mm^-1, the final R = 0.0506 and wR = 0.1382. Each Cu（n） ion is coordinated by five oxygen atoms from two benzoic acids, two acetic acids and one methanol molecule in a slightly distorted square pyramidal environment. The title molecules construct a 2-D layer via the hydrogen bonds O-H…O. Solid-state photoluminescent investigation reveals that complex 1 displays strong emissions, IR and TG-DTA studies are also presented.

关键词： copper complex benzoic acid crystal structure hydrogen bond

Crystal Structure of copper(Ⅱ) complex with 3-Hydroxyl-1,5-diazacycloheptane-N,N'-diacetate

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Chinese Journal of Structural Chemistry 1999年第1期18卷 40-42页

作者： LIU Sheng Hua FU En Qin CHEN Liao Rong WU Cheng Tai Department of Chemistry Wuhan UniversityWuhan430072 Centre of Analysis and Testing Wuhan UniversityWuhan430072

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关键词： crystal structure aminocarboxylate copper complex

Synthesis and Crystal Structure of a copper(II) complex with α-Hydroxylated Acid, [Cu(C_(14)H_8O_3)(C_5H_(13)NO)(H_2O)].0.5H_2O

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Chinese Journal of Structural Chemistry 2002年第2期21卷 142-145页

作者：冯云龙刘世雄 Department of Chemistry Zhejiang Normal University 浙江 Jinhua 321004 Central Laboratory Fuzhou University 福建 Fuzhou 350002

The complex monoaqua[(9-hydroxy-fluorene-9-carboxylato)(N,N-Dimethylisopro- panolamine)]copper(II) semihydrate, Cu(C14H8O3)(C5H13NO)(H2O)]0.5H2O (Mr = 417.93), crystallizes in triclinic system, space group P with a = 9.846(2), b =12.419(3), c =16.781(3)? =75.55(3), b = 75.00(3), g = 84.58(3), V =1918.5(7)?, Z = 4, F(000) =872, Dc=1.45g/cm3 and m= 1.17mm-1. The final R and wR are 0.0481 and 0.1427 for 7099 observed reflections, respectively. The coordination polyhedron around the copper atom is a distorted square pyramid, the basal plane consisting of one carboxyl oxygen atom and one -hydroxylated oxygen atom from a 9-hydroxy-fluorene-9-carboxylato ligand, one nitrogen atom and one oxygen atom from the N,N-dimethylisopropanolamine ligand; while the axial coordination site is occupied by a water oxygen atom with a Cu-O bond length of 2.428(3)?

关键词： crystal structure copper complex -carboxylated acid

Synthesis and Structural Characterization of a Tetranuclear copper complex with 2-Amino-1,3-thiazole

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Chinese Journal of Structural Chemistry 2010年第12期29卷 1818-1823页

作者：邓玉恒丁彦峰刘娟单晓晨 Department of Chemistry Capital Normal University

The title tetranuclear complex,（μ4-oxo）-hexakis（μ2-chloro）-tetrakis（2-amino-1,3-thiazole-N）-tetra-copper（ii） [Cu4（μ4-O）（μ-Cl）6L4]（1,L=2-amino-1,3-thiazole） was synthesized by the reaction of CuCl2·2H2O with 2-amino-1,3-thiazole in methanol and characterized by IR spectra and X-ray diffraction.complex 1 crystallizes in triclinic,space group P1 with a=9.7137（2）,b=10.7005（2）,c=14.6505（2）,α=83.9550（10）,β=82.0930（10）,γ=67.1640（10）°,V=1387.84（4）3,Mr=883.43,Z=2,μ=3.927 mm-1,Dc=2.1144 g/cm3,F（000）=868,R=0.0332 and wR=0.0814.The complex contains a tetrahedron of four CuII atoms coordinating to a central μ4-O atom,with the six edges of the tetrahedron bridged by six Cl atoms.The Cu-O bond distances range from 1.910（2） to 1.918（2）,Cu-Cl from 2.3501（11） to 2.5924（10）,and Cu-Cu from 3.1003（6） to 3.1663（6）.The coordination geometries of the four coppers distort from trigonal bipramid to tetragonal pyramid with different distortion factors.The free animo groups of the ligands result in a lot of N-H···Cl and N-H···N intra-and intermolecular hydrogen bonds.

关键词： 2-amino-1 3-thiazole tetranuclear copper complex crystal structure

Synthesis, Structure and Characterization of Two-dimensional Network copper complex [Cu_3(nta)_2(azpy)_2(H_2O)_2]·6H_2O

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Chinese Journal of Chemistry 2002年第2期20卷 187-190页

作者：李宝龙徐艳刘琦王化勤徐正 Institute of Coordination Chemistry State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 China

The copper(Ⅱ) complex [Cu_3(nta)_2(azpy)_2(H_2O)_2]·6H_2O (nta =nitrilotriacetate, azpy = 4,4′-azobispyridine) has been synthesized and characterized. The X-rayanalysis reveals that there are two kinds of copper(Ⅱ) coordination environments. Cu(1) has adistorted square plane symmetry and Cu(2) has a distorted octahedral symmetry. Cu(1) is linked toCu(2) through nta and bound to Cu(1C) by azpy, and Cu(2) is linked to Cu(2A) through azpy, whichextends to two-dimensional network with large rhombus 1.2 nm x 1.7 nm.

关键词： crystal structure two-dimensional network copper complex azobispyridine

Polymerization of lactide and synthesis of block copolymer catalyzed by copper(Ⅱ) Schiff base complex

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Chinese Chemical Letters 2016年第12期27卷 1763-1766页

作者： Anita Routaray Somanath Mantri Nibedita Nath Alekha Kumar Sutar Tungabidya Maharana Catalysis Research Lab Department of Chemistry Ravenshaw University Cuttack-3 Odisha India Department of Chemistry National Institute of Technology Raipur India

In the present investigation, the novel copper Schiff base complex was synthesized and its catalytic activity was evaluated for the ring-opening polymerization （ROP） of lactide and block polymerization of poly（lact... 详细信息

关键词： ROP Lactide Schiff Base copper complex PLA Block polymer

Synthesis and Crystal Structure of a Novel copper (II) complex with Acetylenedicarboxylate and 2, 2′-Bipyridine

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Chinese Chemical Letters 2005年第10期16卷 1405-1408页

作者： Ming Xing LI Min SHAO Hui DAI Bao Li AN Wen Cong LU Yu ZHU Chen Xia DU Department of Chemistry Shanghai University Shanghai 200444 Department of Chemistry Zhengzhou University Zhengzhou 450052

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.

关键词： copper complex crystal structure coordination polymer acetylenedicarboxylate acid.