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（英文）  

Syntheses, Crystal Structures, and Magnetic Properties of Two Cobalt(Ⅱ) and Nickel(Ⅱ) Coordination Polymers Constructed from Biphenyl-Type Tricarboxylic Acids

作　　者：赵娜[1] 黎彧[1] 冯安生[1] 邹训重 ZHAO Na;LI Yu;FENG An-Sheng;ZOU Xun-Zhong(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)

机构地区：[1]广东轻工职业技术学院广东省特种建筑材料及其绿色制备工程技术研究中心/佛山市特种功能性建筑材料及其绿色制备技术工程中心

出　　处：《无机化学学报》2019年第7期1248-1254,共7页Chinese Journal of Inorganic Chemistry

基　　金：广东省高等职业院校珠江学者岗位计划资助项目(2015,2018);广东省自然科学基金(No.2016A030313761);广东轻院珠江学者人才类项目(No.RC2015-001);生物无机与合成化学教育部重点实验室开放基金(2016);广东省高校创新团队项目(No.2017GKCXTD001);广州市科技计划项目(No.201904010381);广东省高校特色创新项目(No.2017GKTSCX005)资助

摘　　要：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,P1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。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 P1. Compound 1 has a 1D double-helix chain structure, which is assembled to a3D 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.

关 键 词：配位聚合物 双螺旋链 模板效应 三羧酸配体 磁性 

分 类 号：O614.812[理学—无机化学]