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以氮氧自由基为配体,合成了3例氮氧自由基-稀土三自旋单核配合物[Ln(hfac)3(NIT-Ph-4-Br)2](Ln=Gd(1),Tb(2),Dy(3),hfac=六氟乙酰丙酮,NIT-Ph-4-Br=4,4,5,5-四甲基-2-(4′-溴)-咪唑啉-3-氧化-1-氧基自由基。单晶结构分析表明3个配合物均属单斜晶系P21/c空间群,配合物中的Ln髥离子为八配位模式,并且拥有相似的自由基-稀土-自由基单核结构。对配合物的磁性测试结果表明,配合物1中自由基与Gd髥离子之间存在着铁磁相互作用,自由基与自由基之间存在着反铁磁相互作用;配合物2,3中,稀土离子与自由基之间存在弱的反铁磁相互作用
(Ln = Gd (1)) was synthesized by using nitroxides as the ligand and three nitroxide-rare earth tri-spin mononuclear complexes [Ln (hfac) 3 , Tb (2), Dy (3), hfac = Hexafluoroacetylacetone, NIT-Ph-4-Br = 4,4,5,5-tetramethyl-2- (4’-bromo) 3-oxo-1-oxyl free radical.The single crystal structure analysis showed that all the three complexes belong to the monoclinic P21 / c space group, the Ln 髥 ions in the complex are in octameric coordination mode and have similar freedom Radical-radical mononuclear structure.The magnetic test results show that there is a ferromagnetic interaction between the free radical and Gd 髥 ion in the complex 1, antiferromagnetic activity exists between the free radical and radical In complexes 2 and 3, weak antiferromagnetic interaction exists between rare earth ions and free radicals