N,N’-双(2-吡啶乙基)二硫代草酰胺根桥联的三核铜(Ⅱ)配合物的合成及性质

Two Trinuclear copper(Ⅱ) complexes bridged with N,N′-Bis(2-pyridylethyl)-Dithiooxamidate, (ClO4)2 (1) and (NO3)2 (2) (H2L=N,N′-Bis(2-pyridylethyl)-Dithiooxamide), have been synthesized, and characterized by elemental analyses, IR, UV-Visible spectra, conductance and EPR spectra. The variable temperature magnetic susceptibility for complex 1 has been measured in the temperature range of 1.5~298 K. Experimental data of magnetic susceptibility are successfully fit to theoretical value based on the spin Hamiltonian operator: H=-2J(S1S2+ S2S3)-2JS1S3, S1=S2=S3=1/2, giving the magnetic exchange parameters of 2J=-221.6 cm-1 and 2j=-15.8 cm-1. This result indicates the presence of a strong antiferromagnetic spin exchange interaction between the Cu(Ⅱ) ions.

国家自然科学基金资助项目(No.50173011); 教育部留学回国人员科研基金;

二硫代草酰胺桥联配体; 三核铜(Ⅱ)配合物; 磁性;

O641.4

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