Synthesis, Crystal Structure, DNA Binding and Catalytic Activities of a New Unsymmetrical Macrocyclic Dinuclear Zn(Ⅱ) Complex  

作　　者：张华丽 陈云峰 宋会婷 王会生 潘志权 

机构地区：[1]National Engineering Research Center of Phosphate Resources Development and Utilization,Wuhan Institute of Technology [2]Key Laboratory for Green Chemical Process of Ministry of Education,Wuhan Institute of Technology

出　　处：《Chinese Journal of Structural Chemistry》2014年第10期1505-1515,共11页结构化学（英文）

基　　金：Supported by National Natural Science Foundation of China(21201136);Wuhan Youth Chenguang Program of Science and Technology(201271031374)

摘　　要：An unsymmetrical macrocyclic dinuclear Zn（II） complex, [Zn2（H0.5L）（OAc）]（ClO4）1.5（1, H2 L is the condensation product between 2, 6-diformyl-4-methylphenol and diethylenetriamine）, was obtained and characterized by IR spectrum, elemental analysis and X-ray single-crystal diffraction. The complex crystallizes in monoclinic, space group P21/c with a = 16.784（2）, b = 19.474（3）, c = 10.3364（13）A, β = 92.923（2）°, V = 3374.1（7） A3, Z = 4, Dc = 1.672 g/cm^3, F（000） = 1740, μ = 1.651 mm^-1, the R = 0.0609 and wR = 0.1696 for 4745 observed reflections（I 〉 2σ（I））. The interactions of the complex with DNA have been measured by electrochemical studies, UV spectroscopy and viscosity experiment. The interactions of the complex with calf thymus DNA were studied by UV-vis spectra and the binding constant is 1.58 × 10^4 mol·L^-1. The phosphate hydrolysis catalyzed by the complex was investigated using 4-nitrophenyl phosphate（NPP） as the substrate; the observed first order rate constant value is 3.0 × 10^–4 s^-1.An unsymmetrical macrocyclic dinuclear Zn（II） complex, [Zn2（H0.5L）（OAc）]（ClO4）1.5（1, H2 L is the condensation product between 2, 6-diformyl-4-methylphenol and diethylenetriamine）, was obtained and characterized by IR spectrum, elemental analysis and X-ray single-crystal diffraction. The complex crystallizes in monoclinic, space group P21/c with a = 16.784（2）, b = 19.474（3）, c = 10.3364（13）A, β = 92.923（2）°, V = 3374.1（7） A3, Z = 4, Dc = 1.672 g/cm^3, F（000） = 1740, μ = 1.651 mm^-1, the R = 0.0609 and wR = 0.1696 for 4745 observed reflections（I 〉 2σ（I））. The interactions of the complex with DNA have been measured by electrochemical studies, UV spectroscopy and viscosity experiment. The interactions of the complex with calf thymus DNA were studied by UV-vis spectra and the binding constant is 1.58 × 10^4 mol·L^-1. The phosphate hydrolysis catalyzed by the complex was investigated using 4-nitrophenyl phosphate（NPP） as the substrate; the observed first order rate constant value is 3.0 × 10^–4 s^-1.

关 键 词：macrocyclic complex crystal structure DNA cleavage catalytic activities 

分 类 号：O627.23[理学—有机化学]