(4,7-diphenyl-1,10-phenanthroline)₂Eu₂(piv)₆ | 1402454-95-8

• 英文名称: (4,7-diphenyl-1,10-phenanthroline)₂Eu₂(piv)₆
• 英文别名: (bath)₂Eu₂(piv)₆；Eu2(pivalate)6(4,7-diphenyl-1,10-phenanthroline)2
• CAS: 1402454-95-8
• 化学式: C₇₈H₈₆Eu₂N₄O₁₂
• 分子量: 1575.48
• InChiKey: QPVUCHAIUFWMET-UHFFFAOYSA-H

反应信息

• 作为产物：
  描述：

  [(4,7-diphenyl-1,10-phenanthroline)₂Eu₂(piv)₆]*2EtOH 以 neat (no solvent) 为溶剂， 生成 (4,7-diphenyl-1,10-phenanthroline)₂Eu₂(piv)₆
  参考文献：
  名称：

  具有螯合 N-供体配体的双核镧系元素 (III) 新戊酸盐的合成、结构、热稳定性、磁性和发光性质

  摘要：

  新的双核镧系元素新戊酸盐络合物 [Tb2(piv)6(Hpiv)6]、[Tb2(piv)6(bpy)2]、[Tb2(piv)6(phen)2]、[Tb2(piv)6(bath) 2]·1.5EtOH，和[Eu2(piv)6(bath)2]·2EtOH，以及配位聚合物{Tb(piv)3}n，其中piv = (CH3)3CCO2–，bpy = 2，合成了 2'-联吡啶、phen = 1,10-菲咯啉、浴 = 4,7-二苯基-1,10-菲咯啉和 EtOH = 乙醇，并通过 X 射线衍射进行表征。对于铽配合物，研究了磁性和固态热解。固体分解产物的相组成由 X 射线粉末衍射确定。这些配合物的光物理特性通过发光、激发和磷光光谱以及寿命测量进行分析。bpy、phen、和浴配合物表明超分子组织影响Ln3+发光的敏化效率。获得的所有结果为使用双核镧系元素新戊酸盐配合物作为有效的光转换分子器件（LCMD）提供了良好的前景。

  DOI：

  10.1002/ejic.201200235

文献信息

• Binuclear europium(III) pivalates with 4,7-diphenyl-1,10-phenanthroline: Controllable synthesis, unique structural transitions, and remarkable luminescence
  作者：Irina G. Fomina、Andrey B. Ilyukhin、Yury S. Zavorotny、Vasilisa I. Gerasimova、Ilya V. Taidakov、Nikolai P. Datskevich、Aleksei G. Vitukhnovskii、Zhanna V. Dobrokhotova、Igor L. Eremenko

  DOI：10.1016/j.poly.2017.03.034

  日期：2017.6

  Solution chemistry methods were developed, resulting in the controllable formation of complexes [(bath)(2)Eu-2(piv)(6)]center dot 2EtOH (1a center dot 2EtOH), [(bath)(2)Eu-2(piv)(6)]center dot 1.5EtOH (1b center dot 1.5EtOH), and [(bath)(2)Eu-2(piv)(6)]center dot 0.75H(2)O (1c center dot 0.75H(2)O), where piv is (CH3)(3)CCO2- and bath is 4,7-diphenyl-1,10-phenanthroline. Polymorphs 1a, 1b, and 1c of the composition [(bath)(2)Eu-2(piv)(6)] are produced by desolvation of the appropriate solvates. 1a center dot 2EtOH, 1b center dot 1.5EtOH, 1c center dot 0.75H(2)O, 1a, 1b, and 1c were characterized by single crystal X-ray diffraction (SC-XRD). 1a center dot 2EtOH, 1b center dot 1.5EtOH, and 1c center dot 0.75H(2)O differ in the structural functions of s2-piv anions and have different molecular and crystal structures. 1a center dot 2EtOH contains two mu(2)-piv-kappa(2)0,0' anions and two mu(2)-piv-kappa(2)0,0,0' anions, whereas 1b center dot 1.5EtOH and 1c center dot center dot 0.75H(2)O have four mu(2)-piv-kappa(2)0,0' anions. Single crystals of 1b center dot 1.5EtOH (monoclinic, C2/c) and 1c center dot 0.75H(2)O (monoclinic, 12/a) undergo reversible desolvation-solvation without structural changes. The unique feature of lb and is is melting at high temperatures. The melting of 1b and its subsequent crystallization lead to the polymorphic transition from 1b to 1c. The latter is reversibly melt -crystallized. The unique feature of 1a center dot 2EtOH is that it undergoes two 0D-0D single-crystal-to-single crystal (SCSC) transitions. The SCSC transition from 1a center dot 2EtOH (triclinic, PT) to la (monoclinic, P2(1)) is a result of desolvation is accompanied by a change in the crystal system. The most significant change during the temperature -induced SCSC polymorphic transition from 1a to 1c (monoclinic, 121a) is the Eu-O bond cleavage resulting in different coordination geometries of Eu atoms in 1a and 1c. The overall quantum yield Q(Ln)(L), for 1a center dot 2EtOH amounts to 62%. A comparison of the spectroscopic and photophysical data for the Eu complexes shows that the differences in the coordination geometries of the metal atoms in the Eu pivalates have no effect on intensity of Eu3+ ion luminescence. The results of the present study demonstrate that all complexes hold promise for the design of brightly emissive Eu(3+)containing materials. (C) 2017 Elsevier Ltd. All rights reserved.