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不对称双Schiff碱三核配合物的合成和磁性
Synthesis,Charactrization and Magnetic Properties of Asymmetrical Double Schiff Base Trinuclear Complexes
【摘要】 合成了不对称双Schiff碱Cu(Ⅱ)单核配合物HCuLe(H3Le为N-3-羧基水杨醛-N-(′5-氯水杨醛)缩乙二胺)及三核配合物Cu(Ⅱ)Co(Ⅱ)Cu(Ⅱ)和Cu(Ⅱ)Cu(Ⅱ)Cu(Ⅱ),用元素分析、红外光谱、电子光谱测试技术对它们进行了表征。测定了2个三核配合物在5~300 K范围内的变温磁化率,并通过自旋哈密顿算符=-2J M(Cu1+Cu2)推导出的理论公式对实验值进行最佳拟合,得到了2个三核配合物的磁交换参数J1=-15.1 cm-1,J2=-61.8 cm-1,表明在这2个配合物分子内存在金属离子间反铁磁偶合作用。
【Abstract】 An asymmetrical double Schiff base Cu(Ⅱ) mononuclear complex HCuLe(Where H3Le is N-3-carboxylsalicylidene-N′-(5-chlorosalicylaldehyde-1,2-diaminoethane)) and its trinuclear complexes Cu(Ⅱ)M(Ⅱ)Cu(Ⅱ)(M=Co,Cu) were synthesized and characterized by means of elemental analysis,IR and(electron) spectrometries.The variable-temperature magnetic susceptibilities of(CuLe)2Co H2O and((CuLe)2Cu·H2O) at 5300 K were analyzed by means of the Hamiltonian =-2JM(Cu1+Cu2),leading to J1=-15.1 cm-1,J2=-61.8 cm-1,which indicated that the interaction between the central M(Ⅱ) ion and the terminal Cu(Ⅱ) ions was antiferromagnetical.
【Key words】 asymmetrical double Schiff base; trinuclear complex; magnetic property;
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2006年10期
- 【分类号】O641.4
- 【被引频次】6
- 【下载频次】206