Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (8): 912-917.DOI: 10.11944/j.issn.1000-0518.2017.08.160462

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Synthesis, Structure and Properties of Binuclear Zinc Complex [Zn(dna)(phen)(H2O)]

LI Jianfab,CHEN Xiaolia*()   

  1. aShaanxi Key Laboratory of Chemical Reaction Engineering,Department of Chemistry and Chemical Engineering,Yan'an University,Yan'an,Shaanxi 716000,China
    bDepartment of Chemical Engineering,Yulin Vocational and Technical College,Yulin,Shaanxi 719000,China
  • Received:2016-11-16 Accepted:2017-02-12 Published:2017-07-25 Online:2017-07-26
  • Contact: CHEN Xiaoli
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21101133), Yulin Science and Technology Project(No.GY13-23)

Abstract:

A new complex [Zn(dna)(phen)(H2O)] based on 5,5'-dithiobis(2-nitrobenzoic acid)(H2dna) and 1,10- phenanthroline(phen), has been hydrothermally synthesized and structurally characterized by elemental analysis, Fourier transform infrared spectrometer, X-ray single crystal diffraction and powder X-ray diffraction. Crystal structural analysis reveals that it crystallizes in monoclinic, space group P21/n, a=1.5312(3) nm, b=1.16054(18) nm, c=1.5609(3) nm, β=110.451(2)°, V=2.5990(7) nm3, Z=4. There is a binuclear ring structure in the complex, and the neighboring binuclear rings are linked into 1D supramolecular chain through hydrogen bonding interaction. The adjacent supramolecular chains are further interconnected by S••••O and C—H••••π weak interactions resulting a 3D supramolecular structure. The complex after dehydration remains relatively stable until 245 ~450 ℃. Then ligands begin to decompose, which shows good thermal stability. The complex displays a strong fluorescence emission maximum at ca. 440 nm upon excitation at 280 nm. The emission peaks of H2dna ligand and the complex are similar. Compared with H2dna ligand, the fluorescence intensity of complex is significantly enhanced.

Key words: zinc complex, crystal structure, hydrothermal synthesis