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  

Syntheses and Properties of Trinuclear Copper(Ⅱ) Complexes Bridged with N,N′-Bis(2-pyridylethyl)-Dithiooxamidate

作　　者：崔建中[1] 程鹏[2] 廖代正[2] 姜宗慧[2] 阎世平[2] 王耕霖[2] 

机构地区：[1]天津大学化学系,天津300072 [2]南开大学化学系,天津300071

出　　处：《无机化学学报》2004年第6期743-747,共5页Chinese Journal of Inorganic Chemistry

基　　金：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

摘　　要：多原子桥联配体的多核配合物中，顺磁离子间磁偶合作用的研究对阐明磁性和结构的关系以及设计新型分子基磁性材料具有重要的理论意义。草酸根及草酰胺根桥联的多核配合物得到了较为广泛和深入的研究。硫原子取代两个氧原子后，形成二硫代草酸根及二硫代草酰胺根，由于硫属于第三周期的元素，其半径较大，电负性较小。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.

关 键 词：二硫代草酰胺桥联配体 三核铜(Ⅱ)配合物 磁性 反铁磁交换作用 

分 类 号：O627.12[理学—有机化学]