A series of coordination polymers based on a 5-(3′-amine-1′H-pyrazol-4′-yl)-1H-tetrazole ligand: synthesis, structure and properties
A series of coordination polymers based on a 5-(3′-amine-1′H-pyrazol-4′-yl)-1H-tetrazole ligand: synthesis, structure and properties
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DOI：
10.1039/c3ce41462k
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发表时间：
2013-11
期刊：
影响因子：
3.1
通讯作者：
L. Tian;Zheng Niu;Zhong-Yi Liu;S. Zhou;P. Cheng
中科院分区：
文献类型：
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作者：
L. Tian;Zheng Niu;Zhong-Yi Liu;S. Zhou;P. Cheng
在水热条件下合成了一系列新的配位聚合物{[Co（Hapt）2]·2 H2O}n（1，H2 apt = 5-（3′-氨基-1 ′ H-吡唑-4 ′-基）-1H-四唑），{[Zn（Hapt）2]·3 H2O}n（2），{[Cd（Hapt）2]·2.5H2O}n（3）和[Cu（Htpa）2]n（4），并对其进行了元素分析和X射线结构分析.四唑配体采用两种配位模式，生成两种二维层。其中，1-3是同晶型的。此外，通过可预测的次级相互作用，如O-H-C和O-H-N氢键，这些配合物构建了扩展的三维超分子结构。磁性研究表明化合物1在4.5K以下表现出磁有序性，并伴有自旋倾斜。荧光光谱研究表明，配合物2-3的荧光发射是由配体π-π* 跃迁引起的。
A new family of coordination polymers, {[Co(Hapt)2]·2H2O}n (1, H2apt = 5-(3′-amine-1′H-pyrazol-4′-yl)-1H-tetrazole), {[Zn(Hapt)2]·3H2O}n (2), {[Cd(Hapt)2]·2.5H2O}n (3) and [Cu(Htpa)2]n (4) have been prepared under hydrothermal conditions and characterized by elemental analyses and X-ray structural analyses. The tetrazole ligand adopts two coordination modes generating two kinds of 2D layers. Among them, 1–3 are isomorphous. Furthermore, extended 3D supramolecular architectures are constructed for these complexes via predictable secondary interactions such as O⋯H–C and O⋯H–N hydrogen bonding. Magnetic studies indicate that compound 1 exhibits magnetic ordering below 4.5 K with spin canting. The fluorescence studies show that the emissions of complexes 2–3 are attributed to the ligand π–π* transition.