The single crystals of the azo copper（Ⅱ）-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by s...The single crystals of the azo copper（Ⅱ）-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by single-crystal X-ray diffraction. The crystal is of triclinic system, space group P1 with a = 7.8843（12）, b = 11.5998（17）, c = 13.955（2） A, α = 112.214（2）, β = 95.105（2）, γ = 97.616（2）o, V = 1157.6（3） A^3, Mr = 586.97, Z = 2, F（000） = 600, Dc = 1.684 g/cm^3, μ（MoKα） = 1.120 mm-1, the final R = 0.0419 and wR = 0.1259 for 3475 observed reflections with I 〉 2σ（I）. The coordination around copper（II） atom is a slightly distorted square-pyramidal geometry involving [Cu（C16H11N4O8S）（OH）H2O]-cation, one Na＋ anion and one C2H5OH solvate molecule. The hydrogen bonds and π···π stacking interactions extend the complex into a three-dimensional framework.展开更多
A neutral dinuclear compound Cu2[（O=PPh2）2N]2（μ-O2PPh2）2 has been unexpectedly prepared from the reaction of [Cu2（dppa）2（MeCN）4]（ClO4）2 （dppa = bis（diphenylphosphino）- amine） and Sn（edt）2（edt = ethan...A neutral dinuclear compound Cu2[（O=PPh2）2N]2（μ-O2PPh2）2 has been unexpectedly prepared from the reaction of [Cu2（dppa）2（MeCN）4]（ClO4）2 （dppa = bis（diphenylphosphino）- amine） and Sn（edt）2（edt = ethane-1,2-dithiolate） in dichloromethane in air. ESR spectrum shows that the original Cu^＋ ion has been oxidized. The crystal structure determined by an X-ray single diffractometer displays that the concurrence of the redox and hydrolysis of the origin ligand dppa is taken with the formation of two new ligands. The complex crystallizes in triclinic, space group P1^- with a = 9.4269（13）, b = 10.7522（13）, c = 16.787（2）A^°, α= 92.042（5）, β= 104.591（7）, γ = 96.167（6）°, V= 1633.6（4） A^°3, C72H60 Cu2N2O8P6, Mr = 1394.12, Z = 1, D,. = 1.419 g/cm^3, F（000） = 718,μ = 0.856 mm^-1, the final R = 0.0530 and wR = 0.1096 for 4210 observed reflections with I 〉 2σ（I）.展开更多
A novel dinuclear copper(Ⅱ) complex, [Cu2(phen)(dipic)2(H2O)2]·2H2O (phen=1,10-phenanthroline, dipicH2=2,6-pyridinedicarboxylic acid), has been prepared and structurally characterized. The complex crystallizes i...A novel dinuclear copper(Ⅱ) complex, [Cu2(phen)(dipic)2(H2O)2]·2H2O (phen=1,10-phenanthroline, dipicH2=2,6-pyridinedicarboxylic acid), has been prepared and structurally characterized. The complex crystallizes in the triclinic system, space group P1 with cell parameters a=0.846 0(17) nm, b=1.289 5(3) nm, c=1.452 7(3) nm, α=77.42(3)°, β=79.11(3)°, γ=87.08(3)°, and V=1.518 8(6) nm3. The dinuclear complex shows potential DNA cleavage activity at micromolar concentration in the presence of H2O2 and exhibits higher nuclease efficiency than mononuclear complex [Cu(dipic)(H2dipic)]·H2O. Without external reductants, the added H2O2 may contribute to the generation of hydroxyl radicals that result in DNA strand scission.CCDC:291786.展开更多
基金supported by the University Technology Development Project of Shanxi Province (No. 20101116)
文摘The single crystals of the azo copper（Ⅱ）-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by single-crystal X-ray diffraction. The crystal is of triclinic system, space group P1 with a = 7.8843（12）, b = 11.5998（17）, c = 13.955（2） A, α = 112.214（2）, β = 95.105（2）, γ = 97.616（2）o, V = 1157.6（3） A^3, Mr = 586.97, Z = 2, F（000） = 600, Dc = 1.684 g/cm^3, μ（MoKα） = 1.120 mm-1, the final R = 0.0419 and wR = 0.1259 for 3475 observed reflections with I 〉 2σ（I）. The coordination around copper（II） atom is a slightly distorted square-pyramidal geometry involving [Cu（C16H11N4O8S）（OH）H2O]-cation, one Na＋ anion and one C2H5OH solvate molecule. The hydrogen bonds and π···π stacking interactions extend the complex into a three-dimensional framework.
基金This research was supported by the grants from the State Key Laboratory of Structural Chemistry, the National Science and Technology of China (001CB1089), the Chinese Academy of Sciences (CAS), the National Natural Science Foundation of China (20273073, 20333070, 90206040) and the NaturalScience Foundation of CAS and Fujian Province (2004HZ01-1, 2004J041, 2003J042)
文摘A neutral dinuclear compound Cu2[（O=PPh2）2N]2（μ-O2PPh2）2 has been unexpectedly prepared from the reaction of [Cu2（dppa）2（MeCN）4]（ClO4）2 （dppa = bis（diphenylphosphino）- amine） and Sn（edt）2（edt = ethane-1,2-dithiolate） in dichloromethane in air. ESR spectrum shows that the original Cu^＋ ion has been oxidized. The crystal structure determined by an X-ray single diffractometer displays that the concurrence of the redox and hydrolysis of the origin ligand dppa is taken with the formation of two new ligands. The complex crystallizes in triclinic, space group P1^- with a = 9.4269（13）, b = 10.7522（13）, c = 16.787（2）A^°, α= 92.042（5）, β= 104.591（7）, γ = 96.167（6）°, V= 1633.6（4） A^°3, C72H60 Cu2N2O8P6, Mr = 1394.12, Z = 1, D,. = 1.419 g/cm^3, F（000） = 718,μ = 0.856 mm^-1, the final R = 0.0530 and wR = 0.1096 for 4210 observed reflections with I 〉 2σ（I）.
文摘A novel dinuclear copper(Ⅱ) complex, [Cu2(phen)(dipic)2(H2O)2]·2H2O (phen=1,10-phenanthroline, dipicH2=2,6-pyridinedicarboxylic acid), has been prepared and structurally characterized. The complex crystallizes in the triclinic system, space group P1 with cell parameters a=0.846 0(17) nm, b=1.289 5(3) nm, c=1.452 7(3) nm, α=77.42(3)°, β=79.11(3)°, γ=87.08(3)°, and V=1.518 8(6) nm3. The dinuclear complex shows potential DNA cleavage activity at micromolar concentration in the presence of H2O2 and exhibits higher nuclease efficiency than mononuclear complex [Cu(dipic)(H2dipic)]·H2O. Without external reductants, the added H2O2 may contribute to the generation of hydroxyl radicals that result in DNA strand scission.CCDC:291786.
