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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Syntheses, structures, and magnetic properties of three new MnII–[MoIII(CN)7]4? molecular magnets
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Syntheses, structures, and magnetic properties of three new MnII–[MoIII(CN)7]4? molecular magnets

机译：三种新MNII-[MOIII（CN）7] 4的合成，结构和磁性特性4？ 分子磁铁

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摘要

By reaction of K _(4) [Mo ~(III) (CN) _(7) ]·2H _(2) O, Mn(ClO _(4) ) _(2) ·6H _(2) O and bidentate chelating ligands, three new cyano-bridged compounds, namely Mn _(2) (3-pypz)(H _(2) O)(CH _(3) CN)[Mo(CN) _(7) ] ( 1 ), Mn _(2) (1-pypz)(H _(2) O)(CH _(3) CN)[Mo(CN) _(7) ] ( 2 ) and Mn _(2) (pyim)(H _(2) O)(CH _(3) CN)[Mo(CN) _(7) ] ( 3 ) (3-pypz = 2-(1 H -pyrazol-3-yl)pyridine, 1-pypz = 2-(1 H -pyrazol-1-yl)pyridine, pyim = 2-(1 H -imidazol-2-yl)pyridine), have been synthesized and characterized structurally and magnetically. Single crystal X-ray analyses revealed that although the chelating ligands are different, compounds 1 to 3 are isomorphous and crystallize in the same monoclinic space group C 2/ m . Connected by the bridging cyano groups, one crystallographically unique [Mo(CN) _(7) ] ~(4?) unit and three crystallographically unique Mn ~(II) ions of different coordination environments form similar three-dimensional frameworks, which have a four-nodal 3,4,4,7-connecting topological net with a vertex symbol of {4 ~(3) }{4 ~(4) ·6 ~(2) } _(2) {4 ~(10) ·6 ~(11) }. Magnetic measurements revealed that compounds 1–3 display long-range magnetic ordering with critical temperatures of 64, 66 and 62 K, respectively. These compounds are rare examples of a small number of chelating co-ligand coordinated [Mo(CN) _(7) ] ~(4?) -based magnetic materials. Specifically, the bidentate chelating ligands were successfully introduced into the heptacyanomolybdate system for the first time.
机译：通过K _（4）[Mo〜（III）（CN）（CN）_（7）]·2H _（2）O，Mn（CLO _（4））_（2）·6H _（2）o和二齿螯合配体，三种新的氰基桥接化合物，即Mn _（2）（3-pypz）（H _（2）o）（CH _（3）CN）[Mo（CN）_（7）]（1 ），Mn _（2）（1-PYPZ）（H _（2）o）（CH _（3）CN）[MO（CN）_（7）]（2）和MN _（2）（PYIM） （H _（2）o）（CH _（3）CN）[MO（CN）_（7）]（3）（3-PYPZ = 2-（1 H-戊唑-3-基）吡啶，1-吡啶，Pyim = 2-（1 H-Himidazol-2-Y1）吡啶）已经合成和表征，吡啶，Pyim = 2-（1 H-戊唑-1-基）吡啶，在结构和磁性上已经合成和表征。单晶X射线分析显示，虽然螯合配体是不同的，但在相同的单斜晶间空间C 2 / m中，化合物1至3是同性晶的并且结晶。通过桥接氰基连接，一个晶形上唯一的[Mo（CN）_（7）]〜（4？）单元和不同配位环境的三个晶形独特的Mn〜（II）形成类似的三维框架，具有一个类似的三维框架四节点3,4,4,7-连接拓扑网，带有{4〜（3）} {4〜（4）·6〜（2）} _（2）{4〜（10）· 6〜（11）}。磁性测量显示，化合物1-3分别显示了64,66和62k的临界温度的远程磁性排序。这些化合物是少量螯合的共配体配位[Mo（CN）_（7）]〜（4〜）的磁性材料的稀有实例。具体地，第一时间成功地将双齿螯合配体成功引入庚基甲酰胺系统。

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    Xiao-Qin Wei; Qian Pi; Fu-Xing Shen; Dong Shao; Hai-Yan Wei; Xin-Yi Wang;

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    State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing China;

    State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing China;

    State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing China;

    State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing China;

    Jiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing China;

    State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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