Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (3): 354-360.DOI: 10.11944/j.issn.1000-0518.2017.03.160210

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Synthesis, Structure and Fluorescence Properties of Manganese(Ⅱ) Complex Based on 3-Carboxyl-1,2,4-triazole

TAN Yuhui,GU Zhifeng,LIU Yi,YANG Changshan,WANG Bin,TANG Yunzhi()   

  1. School of Materials and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China
  • Received:2016-05-20 Accepted:2016-09-28 Published:2017-02-27 Online:2017-02-27
  • Contact: TANG Yunzhi
  • Supported by:
    Supported by the National Natural Science Foundation of China (No. 21261009, No. 21461010, No. 21471070) and the Science and Technology Support Program of Jiangxi Provincial Science and Technology Department

Abstract:

In order to investigate the properties of 3-carboxyl-1,2,4-triazole complexes, a novel complex, [Mn(C3H2N3O2)2(H2O)2], was synthesized by the hydrothermal method. The properties of the complex were characterized by Fourier transform infrared spectroscopy(IR), element analysis, thermal gravimetric anlysis(TGA) and powder X-ray diffraction(PXRD). The single crystal X-ray analysis reveals that the complex is a unique single-core structure and belongs to the monoclinic crystal system in space group P21/c. The coordination number of Mn is six. The Mn atom is located on an inversion centre. Each Mn atom is coordinated by two O atoms and two N atoms from two 3-carboxyl-1,2,4-triazole anions and two coordinated water molecules to form a slightly distorted octahedral geometry. The discrete molecules of the complex are furthermore linked, resulting in a three-dimensional network structure through extensive intermolecular hydrogen bonds and π-π interactions. Solid fluorescence of the complex shows an emission peak at 517 nm. Compared with the ligand, there is a 7 nm blue shift. The research provides a reference for exploiting new metal-organic complex fluorescent materials.

Key words: hydrothermal method, carboxyl-triazole, fluorescence properties