基于氮氧自由基的新型稀土配合物的合成、结构及光谱性质

Synthesis,Structure and Optical Properties of A Novel lanthanide Complex Based on Nitroxide Radical

合成了一种新型的氮氧自由基-稀土配合物[Dy(hfac)_(3)(H_(2)O)_(2)]·(NITMePy)(1,CCDC:846691,hfac=六氟乙酰丙酮,NITMePy=2-(2-吡啶基-3-甲基)-4,4,5,5-四甲基氧化咪唑啉-3氧化-1-氧基自由基),其结构和光谱性质经元素分析、红外光谱和紫外光谱表征。结果表明:配合物1属于单斜晶系,P2_(1)/n空间群,晶胞参数a=12.262(3)Å,b=24.251(5)Å,c=14.229(3)Å,β=91.33(3)°,V=4230.0(15)Å3,Z=4;配合物1由一个[Dy(hfac)_(3)(H_(2)O)_(2)]单元和一个NITMePy自由基单元组成;在[Dy(hfac)_(3)(H_(2)O)_(2)]单元中,Dy(Ⅲ)为八配位变形十二面体构型。

A new lanthanide-nitronyl nitroxide complex[Dy(hfac)_(3)(H_(2)O)_(2)]·(NITMePy)(1,hfac=hexafluoroacetylacetonate,NITMePy=2-(2-pyridyl-3-methyl)-4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide)has been synthesized and characterized by elemental analyses,IR,UV,single crystal X-ray diffraction.The results show that complex 1 belongs to monoclinic space and group P2_(1)/n with a=12.262(3)Å,b=24.251(5)Å,c=14.229(3)Å,β=91.33(3)°,V=4230.0(15)Å3 and Z=4.X-ray diffraction analysis shows that the complex consists of one[Dy(hfac)_(3)(H_(2)O)_(2)]unit,in which the Dy(Ⅲ)ion is eight-coordinated in a dodecahedron geometry and one NITMePy radical unit.