The Complexity of the Complexes. A Twelve-fold Anchored Ligand in a Co(II) Hybrid Polymeric Material with Ferromagnetic Order
The Complexity of the Complexes. A Twelve-fold Anchored Ligand in a Co(II) Hybrid Polymeric Material with Ferromagnetic Order
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DOI：
10.1021/cm011286p
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发表时间：
2002-03
影响因子：
8.6
通讯作者：
N. Snejko;E. Gutiérrez‐Puebla;J. Martínez;M. Monge;C. Ruiz-Valero
中科院分区：
文献类型：
--
作者：
N. Snejko;E. Gutiérrez‐Puebla;J. Martínez;M. Monge;C. Ruiz-Valero
水热法合成了新型有机-无机聚合物Co2[O 8 C10 H2]的单晶。报道了合成条件。通过单晶X射线衍射确定了该材料的晶体结构：单斜晶系，空间群C2/m，a = 6.161（1）A，B = 17.478（4）A，c = 4.554（1）A，β = 115.735（4）°。3D结构可以根据共享边CoO 6八面体链来设想，该八面体链沿着沿着[100]方向运行，在[001]方向上通过羧酸酯基团保持在一起，并且在[010]方向上通过多齿苯-1，2，4，5-四羧酸酯配体保持在一起。在这种有机-无机杂化化合物中，配体与12个不同的钴原子配位。这种配位迫使形成一维链，其中Co原子彼此非常接近，并赋予材料有趣的磁性。在TC = 14.9 K时获得了长程3D铁磁有序，饱和磁化强度为4.3 μB/公式单位，HC = 2.2 kOe。
Single crystals of the new organo-inorganic polymer Co2[O8C10H2] were hydrothermally obtained. Conditions for the synthesis are reported. The crystal structure of this material was established by single-crystal X-ray diffraction: monoclinic, space group C2/m, a = 6.161(1) A, b = 17.478(4) A, c = 4.554(1) A, β = 115.735(4)°. The 3D structure can be envisaged in terms of edge-sharing CoO6 octahedra chains running along the [100] direction kept together in the [001] direction through the carboxylate groups and in the [010] direction through the multidentate benzene-1,2,4,5,-tetracarboxylate ligand. In this organo-inorganic hybrid compound, the ligand coordinates to 12 different cobalt atoms. This kind of coordination forces the formation of 1D chains in which the Co atoms are very close to each other and confers on the material interesting magnetic properties. Long-range 3D ferromagnetic order is obtained at TC = 14.9 K, with a saturation magnetization of 4.3 μB/formula unit and HC = 2.2 kOe.