Citation: ZHANG Hua-Li, CHEN Yun-Feng, SONG Hui-Ting, WANG Hui-Sheng, PAN Zhi-Quan. Synthesis, Crystal Structure, DNA Binding and Catalytic Activities of a New Unsymmetrical Macrocyclic Dinuclear Zn(Ⅱ) Complex[J]. Chinese Journal of Structural Chemistry, ;2014, 33(10): 1505-1515. shu

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

1.
a National Engineering Research Center of Phosphate Resources Development and Utilization, Wuhan Institute of Technology, Wuhan 430073, China;
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b Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China

Corresponding author: PAN Zhi-Quan,
Received Date: 24 February 2014
Available Online: 30 March 2014
Fund Project: Supported by National Natural Science Foundation of China (21201136) (21201136)

An unsymmetrical macrocyclic dinuclear Zn(Ⅱ) complex,[Zn₂(H_0.5L)(OAc)](ClO₄)_0.5 (1, H₂L 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) Å, β=92.923(2)°, V=3374.1(7) Å³, Z=4, D_c=1.672 g/cm³, 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 1.58×10⁴ 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.
- macrocyclic complex,
- crystal structure,
- DNA cleavage,
- catalytic activities
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