Series of novel 3D microporous heterometallic 3d–4f coordination frameworks with (5,6)-connected topology: synthesis, crystal structure and magnetic properties
Series of novel 3D microporous heterometallic 3d–4f coordination frameworks with (5,6)-connected topology: synthesis, crystal structure and magnetic properties
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DOI：
10.1039/c3ce40346g
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发表时间：
2013-05
期刊：
影响因子：
3.1
通讯作者：
Chujun Chen;Ning Wang;Y. Long;Jinwei Gao;Wei-ping Xie;Xing-Rui Ran;S. Yue
中科院分区：
文献类型：
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作者：
Chujun Chen;Ning Wang;Y. Long;Jinwei Gao;Wei-ping Xie;Xing-Rui Ran;S. Yue
稀土硝酸盐、CuCN、1H-1，2，3-三唑-4，5-二甲酸（H3 tda）和异烟酸（Hina）的水热反应生成了一系列新的3d-4f异金属配位聚合物[LnCu（tda）（ina）2（H2O）]·3 H2O（Ln = Eu（1），Tb（2），Gd（3），Dy（4），Ho（5）]，H3 tda = 1H-1，2，3-三唑-4，5-二羧酸，Hina =异烟酸）。通过元素分析、红外光谱、热重分析和X射线单晶衍射对配合物1-5进行了结构表征。单晶X射线衍射分析表明，这些化合物中的金属阳离子首先通过H3 tda配体相互连接形成地毯状的杂金属环[Ln 2（tda）2Cu 4]，然后通过Hina分子桥联形成三维层柱多孔Ln（III）-Cu（II）杂金属配位聚合物。此外，还对1-5的磁性进行了详细的研究。
The hydrothermal reaction of rare earth nitrates, CuCN, 1H-1,2,3-triazole-4,5-dicarboxylic acid (H3tda), and isonicotinic acid (Hina) resulted in the formation of a new series of 3d–4f heterometallic coordination polymers [LnCu(tda)(ina)2(H2O)]·3H2O (Ln = Eu (1), Tb (2), Gd (3), Dy (4), Ho (5)], H3tda = 1H-1,2,3-triazole-4,5-dicarboxylic acid, Hina = isonicotinic acid). Complexes 1–5 are isostructural and structurally characterized by elemental analysis, FT-IR spectroscopy, thermogravimetric analysis (TGA), and single-crystal powder X-ray diffraction (PXRD). Single-crystal X-ray diffraction analysis reveals that the metal cations in these compounds are firstly interconnected by H3tda ligands to produce a carpet-shaped heterometallic ring [Ln2(tda)2Cu4], and then pillared by bridging Hina molecules to form the 3D layer-pillared porous Ln(III)–Cu(II) heterometallic coordination polymers. In addition, the magnetic properties of 1–5 were also investigated in detail.