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首页> 中文期刊>无机化学学报 >两个包含联苯类三羧酸配体的钴(Ⅱ)和镍(Ⅱ)配位聚合物的合成、晶体结构及磁性质

两个包含联苯类三羧酸配体的钴(Ⅱ)和镍(Ⅱ)配位聚合物的合成、晶体结构及磁性质

     
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摘要

Two 1D cobalt(Ⅱ) and 2D nickel(Ⅱ) coordination polymers,namely [Co(μ2-H2btc)2(4,4'-bipy)2]n (1) and {[Ni3(μ4-dppa)2(H2O)6]·2H2O}n (2),have been constructed hydrothermally using H3btc (H3btc=biphenyl-2,4,4'-tricarboxylic acid),H3dppa (H3dppa =5-(3,4-dicarboxylphenyl)picolinic acid),4,4'-bipy(4,4'-bipy=4,4'-bipyridine),and cobalt or nickel chlorides.Single-crystal X-ray diffraction analyses reveal that both compounds crystallize in the triclinic system,space group P(1).Compound 1 has a 1 D double-helix chain structure,which is assembled to a 3D supramolecular framework through O-H…O/N hydrogen bond.Compound 2 shows a 2D sheet based on 1D chain units.Moreover,4,4'-bipy can tune the structures of both coordination polymers by its coordination or template effect.Magnetic studies for compound 1 demonstrate a ferromagnetic coupling between the adjacent Co (Ⅱ) centers.%采用水热方法,用2种联苯类三羧酸配体:联苯-2,4,4'-三羧酸(H3btc)、5-(3,4-二羧基苯基)吡啶甲酸(H3dppa)和4,4'-联吡啶(4,4'-bipy)分别与CoCl2· 6H2O和NiCl2·6H2O反应,合成了具有一维双螺旋链结构的配合物[Co(μ2-H2btc)2(4,4'-bipy)2]n(1)以及二维层状配位聚合物{[Ni3(μ4-dppa)2(H2O)6]· 2H2O}n(2),并对其结构和磁性质进行了研究.结构分析结果表明2个配合物都属于三斜晶系,P(l)空间群.配合物1具有一维双螺旋链结构,而且这些链通过O-H…O/N氢键作用进一步形成了三维超分子框架.而配合物2具有基于一维链单元的二维层状结构.4,4'-联吡啶在配合物1和2中分别起配位作用和模板作用.研究表明,配合物1中相邻钴离子间存在铁磁相互作用.

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  • 来源
    《无机化学学报》|2019年第7期|1248-1254|共7页
  • 作者

    ZHAO Na; LI Yu; FENG An-Sheng; ZOU Xun-Zhong;

  • 作者单位

    Guangdong Research Center for Special Building Materials and Its Green Preparation Technology/Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China;

    Guangdong Research Center for Special Building Materials and Its Green Preparation Technology/Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China;

    Guangdong Research Center for Special Building Materials and Its Green Preparation Technology/Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China;

    Guangdong Research Center for Special Building Materials and Its Green Preparation Technology/Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 钴Co;镍Ni;
  • 关键词

    配位聚合物; 双螺旋链; 模板效应; 三羧酸配体; 磁性;

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