[Eu2(tfa)6(2,2'-bipyrimidine)] | 943726-96-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: [Eu2(tfa)6(2,2'-bipyrimidine)]
• 英文别名: [Eu2(tfa)6(bpm)]；(Eu(4,4,4-trifluoro-1-(2-furyl)-1,3-butanedionate)3)2(2,2'-bipyrimidine)
• CAS: 943726-96-3
• 化学式: C₅₆H₃₀Eu₂F₁₈N₄O₁₈
• 分子量: 1692.76
• InChiKey: BIUGEEOLVKWPNC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  europium(III) chloride hexahydrate 、 4,4,4-三氟-1-(2-呋喃基)-1,3-丁二酮 、 2 2'-联嘧啶 在 NaOH 作用下， 以 乙醇 、 水 为溶剂， 以76%的产率得到[Eu2(tfa)6(2,2'-bipyrimidine)]
  参考文献：
  名称：

  X-ray structure and temperature dependent luminescent properties of two bimetallic europium complexes

  摘要：

  The structural, luminescent and temperature dependent luminescent properties of two homodinuclear europium complexes bridged by 2,2'-bipyrimidine (bpm) are reported. beta-Diketonate ligands 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (tfa) and 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione (tta) are used as capping ligands resulting in complexes of the form [Eu(tfa)(3)](2)bpm (1) and [Eu(tta)(3)](2)bpm (2). All Eu-III ions are eight coordinate with six O atoms from the beta-diketones and two N atoms from the polyazine bridging ligand. Excitation of the beta-diketonate ligands tfa or tta at ca. 340 nm in toluene solutions results in the characteristic Eu-III emission in the visible region of the spectrum. The emission intensity and lifetime associated with the Eu-III centers decrease as the temperature of the solution is increased. Lifetime measurements are fit to a monoexponential while the temperature dependent lifetime data is fit to an Arrhenius-type equation. Evaluation of the data in comparison to data obtained from the monometallic Eu-III analogs reveal very similar photoluminescent properties. This suggests little electronic communication between Eu-III ions via the polyazine bpm bridging ligand. (C) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2007.12.001

文献信息

• Dinuclear lanthanide(III) complexes containing β-diketonate terminal ligands bridged by 2,2′-bipyrimidine
  作者：Deepika D’Cunha、Daniel Collins、Gregory Richards、Gilford S. Vincent、Shawn Swavey

  DOI：10.1016/j.inoche.2006.06.006

  日期：2006.10

  polyazine bridging ligand 2,2′-bipyrimidine (bpm) and β-diketonate terminal ligands yield 16 new monometallic and bimetallic complexes of the form Ln(tl) 3 bpm and [Ln(tl) 3 ] 2 bpm respectively, where tl = terminal ligand. Formation of the dinuclear complex is governed by the size of the lanthanide metal and the type of terminal ligand. The smallest Ln III metals form dinuclear complexes when the terminal

  摘要 镧系元素 (III) (Ln III ) 盐与多嗪桥连配体 2,2'-双嘧啶 (bpm) 和 β-二酮酸酯末端配体的反应产生了 16 种新的单金属和双金属配合物，形式为 Ln(tl) 3 bpm 和 [ Ln(tl) 3 ] 分别为2 bpm，其中tl = 末端配体。双核配合物的形成取决于镧系金属的大小和末端配体的类型。当末端配体由芳香族和氟基团组成时，最小的 Ln III 金属形成双核络合物。无论末端配体如何，最大的 Ln III 金属（Pr 和 Nd）仅与 bpm 桥连配体形成单核配合物。配合物的电子光谱由与末端配体相关的 π−π * 跃迁控制，发射光谱由 4f-4f 镧系元素跃迁引起。