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合成了一种含吡唑啉酮的三脚架结构化合物 1,1,1 三 { 1′ [2′ 氧杂 5′ 氧代 5′ ( 1″ 苯基 3″ 甲基吡唑啉酮 4″ 基 )戊基 ] }丙烷 (H3 L)及其 7个稀土配合物。通过元素分析、摩尔电导、质谱、红外光谱、核磁共振谱、荧光光谱等对H3 L及其稀土配合物的组成及性质进行了表征。分析结果表明 :H3 L的分子式为C45H50 N6O9,配合物的组成比为REL·0 5H2 O (RE =La ,Sm ,Eu ,Gd ,Tb ,Dy ,Yb) ;该三脚架形配体分别以醚氧、烯醇氧及吡唑酮环上的羰基氧与稀土离子进行配位 ,形成内配型配合物。荧光光谱分析表明SmL·0 5H2 O ,EuL·0 5H2 O ,TbL·0 5H2 O ,DyL·0 5H2 O配合物具有三价稀土离子的特征线状荧光 ,其中TbL·0 5H2 O的荧光强度最强 ,表明T(配体 )→5D4(Tb)能级更为匹配 ,从而进行分子内能量有效传递 ;由EuL·0 5H2 O的荧光光谱图形推测 ,Eu3 +离子在该配合物中处于非对称中心
A novel pyrazolone-containing tripod structure compound 1,1,1-tris {1 ’[2’ oxa 5 ’oxo 5’ (1 “phenyl 3” methylpyrazolone 4 " Pentyl]} propane (H3 L) and its seven rare earth complexes.The composition and properties of H3 L and its rare earth complexes were characterized by elemental analysis, molar conductance, mass spectroscopy, infrared spectroscopy, nuclear magnetic resonance spectroscopy and fluorescence spectroscopy The results show that the molecular formula of H3 L is C45H50 N6O9 and the composition ratio of the complex is REL · 0 5H2O (RE = La, Sm, Eu, Gd, Tb, Dy, Yb) Ether oxygen, enol oxygen and carbonyl oxygen on pyrazolone ring coordinated with rare earth ions to form the internal coordination complex.Fluorescence spectroscopy showed that SmL · 5H2O, EuL · 5H2O, TbL · 5H2O , DyL · 5H2O complex has the characteristic linear fluorescence of trivalent rare earth ions, of which TbL · 5HeO has the strongest fluorescence intensity, which indicates that T (ligand) → 5D4 (Tb) The intramolecular energy is effectively transmitted. According to the fluorescence spectra of EuL · 5He, the Eu3 + ions are in the asymmetric center in the complex