Acta Chimica Sinica ›› 2013, Vol. 71 ›› Issue (05): 755-760.DOI: 10.6023/A13010121 Previous Articles     Next Articles

Article

基于线性叠氮四核单元的系列二维化合物: 合成, 晶体结构及磁性

李佐习, 杨乾, 李立存, 胡同亮, 卜显和   

  1. 南开大学化学系 金属与分子基材料化学天津市重点实验室 天津 300071
  • 投稿日期:2013-01-24 发布日期:2013-03-26
  • 通讯作者: 胡同亮,tlhu@nankai.edu.cn E-mail:tlhu@nankai.edu.cn
  • 基金资助:

    项目受国家自然科学基金(Nos. 21031002, 51073079)和天津市自然科学基金(No. 11JCYBJC04100)资助.

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   

  1. Department of Chemistry, and Tianjin Key Laboratory of Metal & Molecule-based Material Chemistry, Nankai University, Tianjin 300071
  • Received:2013-01-24 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).

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 13 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 13 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