采用吡啶基取代的氮氧自由基4P4NIT与过渡金属锰(Ⅱ)离子进行配位,得到了1个双核的四自旋配合物{[Mn(hfac)2]2(4P4NIT)2}·CHCl3(其中,4P4NIT=2-(4'-(4"-吡啶基)苯基)-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阴离子).X射线单晶衍射分析表明,2个4P4NIT自由基作为桥联配体,连接了2个Mn(hfac)2单元,形成双核四自旋配合物.变温磁化率研究表明,配合物中过渡金属Mn(Ⅱ)离子和直接配位的氮氧自由基之间存在着强反铁磁相互作用.
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