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JOURNAL OF SYNTHETIC CRYSTALS ›› 2024, Vol. 53 ›› Issue (9): 1599-1607.

• Research Articles • Previous Articles     Next Articles

A Novel Three-Dimensional Ni (II) Complex: Synthesis, Crystal Structure and Detection for Fe3+, CrO2-4 and Cr2O2-7 in Water

AN Hangyi1,2, HUANG Yanxi1,2, WANG Airong1,2, WANG Xiaoli1,2, LI Jiaming1,2, SHI Zhongfeng1,2   

  1. 1. Guangxi Key Laboratory of Green Chemical Materials and Safety Technology, Beibu Gulf University, Qinzhou 535011, China;
    2. College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, China
  • Received:2024-05-12 Online:2024-09-15 Published:2024-09-19

Abstract: A novel Ni (II) coordination polymer [Ni(pdc)(bib)(H2O)]n(Ni-CP) was synthesised by solvothermal method with 3,5-pyridyl dicarboxylic acid (3,5-H2pdc), 1, 4-bis (1-imidazolyl) benzene (bib) and Ni(NO3)2, and characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric, IR spectroscopic and fluorescence spectroscopy analysis. The results show that Ni-CP crystallized as a monoclinic system with C2/c space group. The asymmetric unit of Ni-CP was comprised of one Ni(II), two half bib ligands, one completely deprotonated 3,5-pdc2- ligands and one coordinated water molecule. The environment around central Ni(II) can be described as irregular hexacoordination octahedral geometry of NiO3N3. The bib and 3,5-pdc2- ligands were bridged by the bidentate coordination mode in the μ2-η1η1 fashion and the tridentate coordination mode in the μ3-η1η1η1 fashion to form a three-dimensional network framework. From a topological point of view, the two-dimensional frame structure can be simplified to a 3-connected topology with a Schläfli symbol (4·82). We consider the 3,5-pdc2- ligands and Ni(II) as nodes and the bib ligands as connectors, forming a three-dimensional structure can be simplified to a 3,5-connected double nodes with topological symbols (4·6·8)(4·62·87). The porosity of Ni-CP is 17.4%. Ni-CP could selectively detect Fe3+, CrO2-4 and Cr2O2-7 with detection limits of 4.275×10-5, 2.681×10-5, 2.681×10-5 mol/L, respectively, and have a high quenching rate.

Key words: nickel(Ⅱ) complex, solvothermal method, crystal structure, topological structure, luminescence property, porosity

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