| 配位聚合物[Ni(cpna)(bpy)(H2O)]n的合成、晶体结构及磁性质 |
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| 引用本文： | 吕东煜,高竹青,顾金忠,窦 伟.配位聚合物[Ni(cpna)(bpy)(H2O)]n的合成、晶体结构及磁性质[J].无机化学学报,2011,27(11):2318-2322. |
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| 作者姓名： | 吕东煜 高竹青 顾金忠 窦 伟 |
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| 作者单位： | 1. 甘肃省有色金属化学与资源利用重点实验室,兰州大学化学化工学院,兰州730000
2. 太原科技大学化学与生物工程学院,太原,030021 |
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| 摘 要： | 通过水热方法，采用H2cpna(H2cpna=5-(2′-carboxylphenyl))和bpy(bpy=2，2′-bipyridine)与Ni(OAc)2·4H2O反应，合成了一个具有二维结构的配位聚合物Ni(cpna)(bpy)(H2O)]n (1)，并对其结构和磁性质进行了研究。结构分析结果表明该聚合物的晶体属于单斜晶系，P21/c空间群。3个镍(Ⅱ)离子、3个cpna配体、3个2，2′-bpy配体和3个配位水分子形成了一个Ni3(cpna)3(bpy)3(H2O)3]环，这些环通过镍(Ⅱ)离子与cpna配体的配位作用形成了一个二维层状结构。层与层之间又通过π-π堆积作用形成了一个三维的配位框架。研究表明，该聚合物中相邻镍(Ⅱ)离子之间存在很弱的反铁磁相互作用。
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| 关 键 词： | 配位聚合物 镍(Ⅱ)配合物 磁性 |
Synthesis, Crystal Structure and Magnetic Properties of a Coordination Polymer [Ni(cpna)(bpy)(H2O)]n |
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| L Dong-Yu,GAO Zhu-Qing,GU Jin-Zhong,DOU Wei.Synthesis, Crystal Structure and Magnetic Properties of a Coordination Polymer [Ni(cpna)(bpy)(H2O)]n[J].Chinese Journal of Inorganic Chemistry,2011,27(11):2318-2322. |
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| Authors: | L Dong-Yu GAO Zhu-Qing GU Jin-Zhong DOU Wei |
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| Institution: | Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China,School of Chemistry and Biology Engineering, Taiyuan University of Science and Technology, Taiyuan 030021, China,Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | A coordination polymer,namely Ni(cpna)(bpy)(H2O)]n (1) has been constructed hydrothermally using H2cpna (H2cpna=5-(2′-carboxylphenyl) nicotic acid),bpy (bpy=2,2′-bipyridine) and Ni(OAc)2·4H2O.The complex crystallizes in the monoclinic system,space group P21/c with a=1.666(2) nm,b=0.962 2(12) nm,c=1.2702(16)nm,β=105.978(12)°,V=1.957(4) nm3,Dc=1.608g·cm-3,Z=4,R=0.038 7 and wR=0.089 3 (I＞2σ(Ⅰ)).Three Ni(Ⅱ) atoms,three cpna ligands,three 2,2′-bpy ligands,and three water ligands form a Ni3(cpna)3(bpy)3(H2O)3] ring.The rings are connected by the coordination interactions of cpna ligands and Ni(Ⅱ) ions to generate a 2D sheet,which are further extended into a 3D metal-organic supramolecular framework by π-π stacking interactions.Magnetic studies for complex 1 show a weak antiferromagnetic coupling between the nearest Ni(Ⅱ) centers,with g=2.10 and J=-0.87 cm-1.CCDC:816351. |
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| Keywords: | coordination polymer nickel(Ⅱ) complex magnetic properties |
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