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通过1,3-苯二胺缩邻香兰素和Ln(acac)3·H2O(Ln=Ce,Eu)反应,合成了2种双核稀土配合物[Ce2L(acac)4(CH3OH)]2·2CH2Cl2(1)和[Eu2L(acac)4(CH3OH)]2·2CH2Cl2(2)。X射线单晶衍射分析确定了配合物的晶体结构,配合物中2个稀土离子均为8配位,具有相同的反四棱柱的配位构型。荧光性质研究表明配合物2显示稀土离子和配体共发光,主要原因是配体1,3-苯二胺缩邻香兰素的三线态能级与中心离子Eu(Ⅲ)的三线态能级相匹配。
Two kinds of dinuclear rare earth complexes [Ce2L (acac) 4 (CH3OH)] 2 were synthesized by the reaction of 1,3-phenylenediamineneboronand Ln (acac) 3 · H2O 2CH2Cl2 (1) and [Eu2L (acac) 4 (CH3OH)] 2.2CH2Cl2 (2). X-ray single crystal diffraction analysis confirmed the crystal structure of the complex. The two rare earth ions in the complex were all 8-coordinated and had the same configuration of anti-quadrangular prism. Fluorescence properties studies show that complex 2 shows rare earth ions and ligand co-luminescence, mainly due to the triplet energy level of the ligand 1,3-phenylenediamineneboronin and the triplet energy level of the central ion Eu (Ⅲ) Match.