Three Mn(II) complexes based on 6-(3-pyridyl)isophthalic acid ligand: Structure modulation, stability and magnetic properties

Three Mn(II) complexes based on 6-(3-pyridyl)isophthalic acid ligand: Structure modulation, stability and magnetic properties
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基于 6-(3-吡啶基)间苯二甲酸配体的三种 Mn(II) 配合物:结构调节、稳定性和磁性

DOI:
10.1016/j.poly.2017.03.042
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发表时间:
2017-06
期刊:
影响因子:
2.6
通讯作者:
Hu Hui
Hu Hui
中科院分区:
化学3区
文献类型:
--
作者:
Zhang Xiuling;Wang Na;Liu Peng Fei;Zhang Da Shuai;Hu Hui

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以6-(3-吡啶基)-间苯二甲酸(H_2PIP)为配体,在水热条件下合成了三个新的配合物[Mn(Hpip)_2(Bipy)_2(H_2O)_2](1),{[Mn(Pip)(BiBP)]·DMA}n(2)和[Mn(Pip)]n(3),并用单晶X-射线衍射法进行了表征。化合物1显示为0D单核结构,孤立的分子进一步通过氢键连接成3D超分子结构。在2中,双核Mn2(COO)4N4次级建筑单元(SBU)通过相邻的配体连接在一起,形成2D层结构。在3的结构内部,通过羧酸基和Mn2+的配位形成一维(1D)链,这些羧酸基和Mn2+通过形成3D网络的配体进一步连接。值得注意的是,热重分析和X射线衍射数据表明,络合物2和3表现出较高的热稳定性和水稳定性。此外,磁性测量表明,聚合物2和3都表现出反铁磁行为。
Based on the 6-(3-pyridyl)isophthalic acid (H2pip) ligand, three new complexes [Mn(Hpip)2(bipy)2(H2O)2] (1), {[Mn(pip)(bibp)]·DMA}n(2) and [Mn(pip)]n(3), have been obtained under hydrothermal conditions and characterized by single-crystal X-ray diffraction. Compound1reveals a 0D mononuclear structure, and isolated molecules are further linked by hydrogen-bonds into a 3D supramolecular structure. In2, the binuclear Mn2(COO)4N4secondary building units (SBUs) are linked by neighboring ligands to result in a 2D layer structure. Inside of the structure of3, one-dimensional (1D) chains are formed by the coordination of carboxylate groups and Mn2+, which are further connected by the ligands generating a 3D network. Notably, complex2and3reveal high thermal and aqueous stability, suggested by TGA and PXRD data. Moreover, the magnetic measurements indicate polymers2and3are both exhibit antiferromagnetic behavior.
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