| 含席夫碱配体的四方压缩高自旋Mn(Ⅲ)配合物的合成、晶体结构及磁性质 |
| Synthesis, Crystal Structure and Magnetic Properties of a Tetragonally Compressed High-Spin Mn(Ⅲ) Schiff Base Complex |
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| 摘要: 我们合成了一个新的六配位的高自旋Mn(Ⅲ)席夫碱化合物[MnⅢ(3-MeO-sal-N(1,5,9,13))]ClO4·H2O (1)(3-MeO-sal-N(1,5,9, 13)是通过N,N'-bis(3-aminopropyl)-1,3-propanediamine和2-hydroxy-3-methoxy benzaldehyde反应得到的六齿希夫碱配体),并对其结构和磁性质进行了研究。结构分析结果表明该化合物的晶体属于单斜晶系,P21/c空间群。该化合物中Mn(Ⅲ)中心具有压缩八面体构型。磁化率测试表明在1.8~300 K温度区间具有高自旋态。磁性数据拟合得到零场分裂常数D >0,与压缩的八面体构型吻合。 |
| 关键词: 锰(Ⅲ)配合物 轴向压缩 磁各向异性 |
| 基金项目: 国家自然科学基金(No.51173082);教育部留学人员科研启动基金资助项目。 |
| Abstract: The synthesis, crystal structure and magnetic properties of a new six-coordinated high-spin (HS) Mn(Ⅲ) Schiff base complex, [MnⅢ(3-MeO-sal-N(1,5,9,13))]ClO4H2O (1) are described. The ligand 3-MeO-sal-N(1,5,9,13) is a hexadentate Schiff base obtained from N,N'-bis(3-aminopropyl)-1,3-propanediamine and 2-hydroxy-3-methoxy benzaldehyde. Compound 1 crystallizes in monoclinic space group P21/c, with a=0.806 43(2) nm, b=2.049 31(4) nm, c=1.709 74(3) nm, β=101.302 0(10)°, V=2.770 77(10) nm3, Z=4, R=0.055 4 and wR=0.136 0 (I >2σ(I)). Single crystal X-ray diffraction analysis reveals that the Mn site has a tetragonally compressed octahedral geometry. The magnetic susceptibilities measurements indicate the HS ground state in the temperature range 1.8~300 K. The magnetic data are well fitted by Zero-Field-Splitting (ZFS) Hamiltonian, showing a D >0 parameter, in line with the compressed octahedron pattern. CCDC: 926103. |
| Keywords: manganese(Ⅲ) complex axial compression magnetic anisotropy |
| 投稿时间：2013-02-26 修订日期：2013-06-24 |
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| 王石,崔林芳,李兴鳌,汪联辉,黄维.含席夫碱配体的四方压缩高自旋Mn(Ⅲ)配合物的合成、晶体结构及磁性质[J].无机化学学报,2013,29(8):1733-1737. |
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