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。
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 H2 L to the resonance energy level of the corresponding Eu(Ⅲ) ion.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2016年第9期1647-1652,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.51402092,21471051,21071038,21101045)资助项目
关键词
1
3-苯二胺缩邻香兰素
Β-二酮
镧系配合物
配位
N
N′-bis(2-oxy-3-methoxybenzylidene)-1
2-phenylenediamine
β-diketonate
lanthanide complexes
coordination