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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=0.832 56(17)nm,b=0.899 38(18)nm,c=0.998 3(2)nm,α=111.94(3)°,β=95.06(3)°,γ=116.90(3)°,V=0.587 7(2)nm3,Z=1,Dc=1.554 g·cm-3,μ=1.558 mm-1,F(000)=286,R1=0.051 9,wR2=0.135 3。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。
Based on the building blocks K2 [Fe (1-CH3im) (CN) 5] and [Cu (cyclam)] (ClO4) 2, a cyanide bridged FeⅢ-CuⅡ neutral one-dimensional compound {[Fe (CN) 4 (μ-CN) Cu (cyclam)] · H2O} n (1-CH3im = 1-methylimidazolium; cyclam = 1,4,8,11-tetraazacyclotetradecane) ) And characterized by X-ray single crystal analysis. The results show that compound (1) is a polymer composed of cyanide bridged heteropoly metals. The structure of the compound belongs to the triclinic system, a = 0.832 56 (17) nm, b = 0.899 38 , c = 0.998 3 (2) nm, α = 111.94 (3) °, β = 95.06 (3) °, γ = 116.90 (3) °, V = 0.587 7 (2) nm3, Z = 1, Dc = 1.554 g · cm-3, μ = 1.558 mm-1, F (000) = 286, R1 = 0.051 9, wR2 = 0.135 3. Magnetic studies show that there is a weak ferromagnetic coupling between Cu Ⅱ and Fe Ⅲ ions with low spin in complex 1.