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中文摘要：
采用甲基嘧啶基取代的Ullman氮氧自由基2M5PmyNIT与过渡金属镍（Ⅱ）离子进行配位,得到了一个双核的四自旋配合物[Ni（hfac）2]2（2M5PmyNIT）2.2CHCl3（其中2M5PmyNIT=2-（2′-甲基-5′-嘧啶基）-4,4,5,5-四甲基咪唑啉-3-氧化-1-氧基自由基,hfac=1,1,1,5,5,5-六氟乙酰丙酮）.X-射线单晶衍射分析表明,在一个分子中,2个2M5PmyNIT自由基作为桥联配体,连接了2个Ni（hfac）2单元,形成双核四自旋配合物.变温磁化率的研究表明,Ni（Ⅱ）离子和直接配位的氮氧自由基之间存在着强的反铁磁相互作用.
英文摘要：
A four-spin complex [Ni （hfac）2]2 （2M5PmyNIT）2 . 2CHCl2 （2M5PmyNIT = 2- （5＇ -2＇ - methylpyrimidyl ）-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide, hfac = 1,1,1,5,5,5- hexafluoro- acetylaceonate） was synthesized using a methylpyrimidyl substituted nitroxide rad- ical. The single crystal X-ray analysis reveals that two 2M5PmyNIT radicals act as bridging ligand linking two Ni（hfac）2 units together. The magnetic study shows that there exists strong magnetic interaction between Ni（ Ⅱ ） ions and directly bonded radicals.
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