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Acta Chimica Sinica >

2013 , Vol. 71 >Issue 05: 755 - 760

DOI: https://doi.org/10.6023/A13010121

Article

A Series of 2D Coordination Polymers Based on Unprecedented Linear Tetranuclear Units Bridged by the Azido Anion: Syntheses, Crystal Structures and Magnetic Properties

  • Li Zuoxi ,
  • Yang Qian ,
  • Li Licun ,
  • Hu Tongliang ,
  • Bu Xianhe
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  • Department of Chemistry, and Tianjin Key Laboratory of Metal & Molecule-based Material Chemistry, Nankai University, Tianjin 300071

Received date: 2013-01-24

  Online published: 2013-03-26

Supported by

Project supported by the National Natural Science Foundation of China (Nos. 21031002, 51073079) and the Natural Science Fund of Tianjin, China (No. 11JCYBJC04100).

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Abstract

Sparked by the strategy of molecular magnets, three magnetic coordination polymers, [Co2(N3)4(L)2.5]∞ (1), [Ni2(N3)3(NO3)(L)2.5]∞ (2) and [Mn2(N3)4(L)2.5]∞ (3) (L=4,4'-bis(imidazol-1-yl)biphenyl), have been synthesized by employing azide as the coupling carrier and a rod-like ligand L as the magnetic insulator. Structural analysis indicates that complexes 1～3 are iso-structural, and illustrate a 2D (4,4) layer based on unprecedented linear tetranuclear units bridged by the EO-azido ions. Their magnetic measurements revealed that complexes 1～3 all present the ferromagnetic (FM) coupling, which was due to the EO-azido linker. The corresponding exchange coupling constants have been estimated by fitting the experimental data, which confirmed the above magneto-structural correlations.

Key words： coordination polymer; rod-like ligand; linear tetranuclear cluster; magnetic property

Cite this article

Li Zuoxi , Yang Qian , Li Licun , Hu Tongliang , Bu Xianhe . A Series of 2D Coordination Polymers Based on Unprecedented Linear Tetranuclear Units Bridged by the Azido Anion: Syntheses, Crystal Structures and Magnetic Properties[J]. Acta Chimica Sinica, 2013 , 71(05) : 755 -760 . DOI: 10.6023/A13010121

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