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Spin-canting magnetization in 3D metal organic frameworks based on strip-shaped Delta-chains

机译:基于条形三角形链的3D金属有机框架中的旋转磁化

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摘要

Three isostructural coordination polymers, M-2(TZI)(OH)(H2O)(2)center dot xH(2)O (x = 3, M = Cu(II) 1, x = 4, M = Co(II) 2 and Ni(II) 3) (H(3)TZI = 5-(1H-tetrazol-5-yl) isophthalic acid), have been synthesized under hydrothermal conditions. The compounds consist of 3D frameworks, in which the magnetic Delta-chain motifs based on corner-sharing M-3(mu(3)-OH) isosceles triangle are linked by the TZI ligands, and they represent the rare (3,4,5,6)-connected 4-nodal net topology with the point symbol (4(3))(4(4)6(2))(4(6)6(4))(4(7)6(8)). Magnetic analyses indicate that compound 1 shows the coexistence of spin canting, metamagnetism and antiferromagnetic ordering, whereas compounds 2 and 3 exhibit canted antiferromagnetic coupling without magnetic ordering down to 2 K. Such magnetic behaviors above 2 K are still rare in Cu(II), Co(II) and Ni(II) compounds with similar chains.
机译:三个异组配位聚合物,M-2(TZI)(OH)(H 2 O)(2)中心点XH(2)O(X = 3,M = Cu(II)1,X = 4,M = CO(II) 在水热条件下合成了2和Ni(II)3)(H(3)TZI = 5-(1H-四唑-5-基)苯二甲酸)。 该化合物由3D框架组成,其中基于角落共享M-3(MU(3)-OH)等腰三角形的磁性δ链基序由TZI配体连接,它们代表稀有(3,4, 5,6)与点符号(4(3))(4(4)6(2))(4(6)6(4))(4(7)6(8))连接4-节点净拓扑 )。 磁性分析表明,化合物1显示了旋转荷荷,元磁性和反铁磁性排序的共存,而化合物2和3表现出倾斜的反铁磁性耦合,而不磁化下降至2K。在Cu(II)上,这种磁性行为仍然罕见, CO(II)和Ni(II)化合物,具有相似的链。

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  • 来源
    《RSC Advances》 |2015年第94期|共7页
  • 作者单位

    Huaibei Normal Univ Coll Chem &

    Mat Sci Huaibei 235000 Anhui Peoples R China;

    Huaibei Normal Univ Coll Chem &

    Mat Sci Huaibei 235000 Anhui Peoples R China;

    Huaibei Normal Univ Coll Chem &

    Mat Sci Huaibei 235000 Anhui Peoples R China;

    Huaibei Normal Univ Coll Chem &

    Mat Sci Huaibei 235000 Anhui Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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