类Salen和β-二酮稀土配合物的晶体结构和荧光性质 |
Crystal Structures and Luminescent Properties of Salen-Type and β-Diketonate Lanthanide Complexes |
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摘要: 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。 |
关键词: 1,3-苯二胺缩邻香兰素 β-二酮 镧系配合物 配位 |
基金项目: 国家自然科学基金(No.51402092,21471051,21071038,21101045)资助项目。 |
Abstract: Two dinuclear lanthanide complexes [Ln2L(acac)4(CH3OH)]2·2CH2Cl2 (Ln=Ce (1), Eu (2)) prepared by salen-type (H2L=N,N'-bis(2-oxy-3-methoxybenzylidene)-1,2-phenylenediamine) ligand and Ln(acac)3·H2O (acac=acetylacetonate) were structurally characterized. X-ray crystallographic analysis reveals that the two Ln(Ⅲ) ions adopt same coordination environments that octa-coordinated Ln(Ⅲ) atoms form square antiprism geometry. Luminescent analysis reveals the Eu(Ⅲ) ion and ligand-centered co-luminescence for complex 2, which is attributed to the incomplete energy transfer from the triplet state of H2L to the resonance energy level of the corresponding Eu(Ⅲ) ion. CCDC:1482355, 1; 1449142, 2. |
Keywords: N,N'-bis(2-oxy-3-methoxybenzylidene)-1,2-phenylenediamine β-diketonate lanthanide complexes coordination |
投稿时间:2016-06-03 修订日期:2016-08-05 |
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邹晓艳,马慧媛,庞海军,张凤鸣,李光明.类Salen和β-二酮稀土配合物的晶体结构和荧光性质[J].无机化学学报,2016,32(9):1647-1652. |
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Support information: 相关附件: file160343_Supporting+Information.doc |
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