| 氰根桥联FeⅢ-CuⅡ一维配合物{[Fe(1-CH3im)(CN)4(μ-CN)Cu(cyclam)]·H2O}n的合成、结构及磁性研究 |
| Synthesis, Crystal Structure and Magnetic Properties of a One-Dimensional Cyanide-Bridged FeⅢ-CuⅡ Complex {[Fe(1-CH3im)(CN)4(μ-CN)Cu(cyclam)]·H2O}n |
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| 摘要: 基于构筑单元K2[Fe(1-CH3im)(CN)5]和[Cu(cyclam)](ClO4)2,合成了一个氰根桥联FeⅢ-CuⅡ中性一维化合物{[Fe(1-CH3im)(CN)4(μ-CN)Cu(cyclam)]·H2O}n(1-CH3im=1-甲基咪唑;cyclam=1,4,8,11-四氮杂环十四烷)(1),并通过X-射线单晶分析表征其结构特征。结果表明:化合物(1)是由氰根桥联的杂金属组成的聚合物,其结构属于三斜晶系,P1空间群,a=0.83256(17)nm,b=0.89938(18)nm,c=0.9983(2)nm,α=111.94(3)°,β=95.06(3)°,γ=116.90(3)°,V=0.5877(2)nm3,Z=1,Dc=1.554g·cm-3,μ=1.558mm-1,F(000)=286,R1=0.0519,wR2=0.1353。磁性研究表明:配合物1中CuⅡ和低自旋的FeⅢ离子之间存在弱的铁磁耦合作用。 |
| 关键词: 氰根桥联 晶体结构 磁性 杂金属 |
| 基金项目: 江苏省创新团队和中央高校基本科研业务费专项资金(No.2013XK05)资助项目。 |
| Abstract: Anew one-dimensional cyanide-bridged FeⅢ-CuⅡ complex {[Fe(1-CH3im)(CN)4(μ-CN)Cu(cyclam)]·H2O}n (1-CH3im=1-methylimidazole, cyclam=1,4,8,11-tetraazacyclotetradecane) (1) has been synthesized by the reaction of [Cu(cyclam)](ClO4)2 and a pentacyanideferrite building blocks K2[Fe(1-CH3im)(CN)5]. Single crystal X-ray diffraction analysis reveals the structure of complex 1 is polymer type with two different metal centers which is alternated linked by cyanide group from the [Fe(1-CH3im)(CN)5]2- building blocks. Complex 1 (C19H32CuFeN11O, Mr=549.95) crystallizes in triclinic space group P1 with a=0.83256(17) nm, b=0.89938(18) nm, c=0.9983(2) nm, α=111.94(3)°, β=95.06(3)°, γ=116.90(3)°, V=0.5877(2) nm3, Z=1, Dc=1.554 g·cm-3, μ=1.558 mm-1, F(000)=286, the final R10.0519 and wR2=0.1353. Magnetic investigations show that complex 1 exhibits a weak ferromagnetic coupling between CuⅡ and low-spin FeⅢ through the cyanide bridge. CCDC: 908099. |
| Keywords: cyanide-bridged crystal structure magnetic property heterometalllic |
| 投稿时间：2013-01-03 修订日期：2013-06-06 |
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| 苗保喜,李国玲,赵云,倪中海.氰根桥联FeⅢ-CuⅡ一维配合物{[Fe(1-CH3im)(CN)4(μ-CN)Cu(cyclam)]·H2O}n的合成、结构及磁性研究[J].无机化学学报,2013,29(11):2470-2474. |
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