摘要
新型三元铕配合物Eu(DBM)3L1(DBM=二苯甲酰甲烷,L1=2-(3-硝基苯基)-咪唑并[4,5-f]-1,10-邻二氮杂菲)的晶体属单斜晶系,Cc空间群.中心铕离子分别与DBM配体的六个氧原子和第二配体的两个鳌合氮原子配位,形成八配位的扭曲四方反棱柱构型.配合物中性配体的共轭平面与相邻分子的DBM苯环平面(C(25),C(26),C(27),C(28),C(29))之间有明显的π-π相互作用.在紫外光激发下,配合物表现出较强的Eu3+的特征发射,第二配体对中心离子有较强的敏化发光作用.
A new ternary europium complex Eu（DBM）3L1 [ L1 = （ 2-（ 3 -nitro-phenyl） -imidazo [ 4, 5 -f] 1, 10-phenanthroline）, DBM = dibenzoylmethane] was synthesized and characterized by X-ray diffraction. This complex crystallized in monoclinic with space group of Cc. Each Eu^3＋ is eight coordinated with six oxygen atoms from three DBM ligands and two nitrogen atoms from neutral ligand L1, forming a distorted square antiprism. In the crystal of this complex, there are strong intermolecular Л-Л stacking interactions between the neutral ligand planes and the phenyl planes of the DBM ligands. The complex typically exhibits intense red emission of Eu^3＋ ion under UV excitation .
出处
《化学研究》
CAS
2005年第3期6-9,共4页
Chemical Research
基金
河南省自然科学基金资助项目(0312000700)
国家自然科学基金资助项目(20471054)
关键词
铕配合物
晶体结构
荧光
europium complex
crystal structure
fluorescence
