| 基于[(Tp)Fe(CN)3]-氰基桥联双核配合物的合成、结构和磁性研究(英文) |
| Synthesis, Structure and Magnetic Properties of Cyano-bridged Dinuclear Complex Based on [(Tp)Fe(CN)3]- |
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| 摘要: 采用[TpFeⅢ(CN)3]-作为构筑基块，合成并表征了一个氰基桥联双核配合物[(Tp)FeⅢ(CN)3CuⅡ(bpy)2]ClO4·CH3OH (1)。对化合物1进行了晶体结构分析，其晶胞参数为a=0.904 26(5) nm，b=1.352 56(7) nm，c=1.556 02(8) nm，α=106.08(1)°，β=95.79(1)°，γ=91.01(1)°，P1空间群。在这个化合物中，[TpFeⅢ(CN)3]通过其中1个氰基与[Cu(bpy)2]2+桥联，而另外2个氰基未参与配位。磁性研究表明，在化合物1中，Cu(Ⅱ)与Fe(Ⅲ)离子之间表现为铁磁相互作用。用哈密顿函数H=-2JSFeSCu对其χMT-T曲线进行了拟合，得到1的朗德因子g=2.34和交换常数J=5.52 cm-1。 |
| 关键词: 晶体结构 双核配合物 磁化率 氰基桥联 |
| 基金项目: |
| Abstract: By using a tricyanometalate precursor [TpFeⅢ(CN)3]- (Tp=hydrotris(pyrazolyl)borate) as a structural building block, a new cyanide-bridged dinuclear complex, [(Tp)FeⅢ(CN)3CuⅡ(bpy)2]ClO4·CH3OH (1) (bpy=2, 2′-bipyridine), has been prepared and characterized. It crystallizes in triclinic space group P1, with a=0.904 26(5) nm, b=1.352 56(7) nm, c=1.556 02(8) nm, α=106.08(1)°, β=95.79(1)°, γ=91.01(1)°. In the complex, [TpFe(CN)3]- acts as a monodentate ligand toward a central [Cu(bpy)2]2+ core through one of its three cyanide groups, the other two cyanides remaining terminal. Magnetic studies for complex 1 show ferromagnetic coupling between the Cu(Ⅱ) and Fe(Ⅲ) ions, giving an S=1 ground state. The best-fit for χMT vs T with an Hamiltonian H=-2JSFeSCu leads to the parameters g=2.34, J=5.52 cm-1 for 1. CCDC: 622244. |
| Keywords: crystal structure dinuclear complex magnetic properties cyano-bridged |
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| 陶建清,王天维,顾志国,左景林,游效曾.基于[(Tp)Fe(CN)3]-氰基桥联双核配合物的合成、结构和磁性研究(英文)[J].无机化学学报,2006,22(12):2207-2211. |
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