Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (2): 165-171.doi: 10.1007/s40242-016-5365-6

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Syntheses, Structures and Magnetic Properties of Two Coordination Polymers Based on 2, 2-Biphenyldicarboxylate Ligand

ZHANG Qingfen, ZHOU Zhongyuan, WANG Xuan, LU Jing   

  1. Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China
  • Received:2015-09-18 Revised:2015-12-03 Online:2016-04-01 Published:2016-01-04
  • Contact: LU Jing E-mail:lujing@lcu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21101086).

Abstract:

Two coordination polymers {[Co3L3(Me2NH)2]·(Me2NH)}n(1) and [CuL(bpy)]n(2)(L=2,2'-biphenyl dicarboxylate ion, bpy=4,4'-bipyridine) were obtained and characterized. Compound 1 was synthesised via solvothermal method, with the L ligands adopting syn-syn-μ2-η1:η1- and μ2-η2-coordination modes and Co(II) centers being linked to form a 1D coordination chain with trinuclear Co3 cluster as sub-units. Compound 2 was synthesized at room temperature, with the L ligand chelating the Cu(II) centers to form a 1D chain, which was further linked by the auxiliary 4,4'-bpy ligand to form a 3D coordination network. The results of variable temperature susceptibility studies reveal that there were ferromagnetic and antiferromagnetic interactions between the paramagnetic metal centers in compounds 1 and 2, respectively.

Key words: Coordination polymer, Crystal structure, Magnetic property