tris(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)(2,4,6-tris(2-pyridyl)-1,3,5-triazine)lanthanum(III) | 1255793-10-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: tris(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)(2,4,6-tris(2-pyridyl)-1,3,5-triazine)lanthanum(III)
• CAS: 1255793-10-2
• 化学式: C₃₃H₁₅F₁₈LaN₆O₆
• 分子量: 1072.4
• InChiKey: WWTXTFQHWKBJRU-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：

  六氟乙酰丙酮 、 氯化镧水合物 、 2,4,6-三(2-吡啶基)三嗪 在 NH₄OH 作用下， 以 乙醇 为溶剂， 以82%的产率得到tris(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)(2,4,6-tris(2-pyridyl)-1,3,5-triazine)lanthanum(III)
  参考文献：
  名称：

  Synthesis and visible light luminescence of mononuclear nine-coordinate lanthanide complexes with 2,4,6-tris(2-pyridyl)-1,3,5-triazine

  摘要：

  Synthesis of four nine-coordinate lanthanide (III) complexes of the type, [Ln(hfaa)(3)(tptz)], where Ln = La, Nd, Sm and Tb; hfaa = the anion of 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine, by a new modified one pot in situ method is reported. The lanthanide ions are coordinated to three N-atoms of three 2-pyridyl units of tptz besides six O-atoms of three hfaa units. The formation of these volatile complexes is confirmed by molecular ion peak in ESI-MS, IR and NMR. The hypersensitive (4)G(5/2), (2)G(7/2) <- I-4(9/2) transition displays distinct band shape which is different from the band shape of known eight- and ten-coordinate complexes. The samarium and terbium complexes emit pink and green luminescence due to (4)G(5/2) -> H-6(j) (j = 5/2, 7/2, 9/2) and D-5(4) -> F-7(j) (j = 3-6) transitions, respectively. (C) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.inoche.2010.07.009

文献信息

• Synthesis, crystal structure, NMR and near infra-red luminescence studies of nine-coordinate Nd and Yb complexes based on fluorinated β‑diketone and a tridentate antenna chromophore, 2, 4, 6-Tris-(2-pyridyl)-s-triazine
  作者：Zubair Ahmed、Kuldeep Mahiya、Khalid Iftikhar

  DOI：10.1016/j.ica.2022.121086

  日期：2022.10

  antiprismitic in both solid and solution states with LnO6N3 (six oxygen atoms from three hfaa and three nitrogen atoms from one tptz) polyhedra. The complexes are stable in non-coordinating (chloroform) and coordinating (methanol) solvents as indicated by NMR spectrum where no dissociation of any ligand/s is observed. The longitudinal relaxation rate (ρ = 1/T1) is very fast in the cases of paramagnetic Nd(III)

  La(III)、Nd(III) 和 Yb(III) 的三个九配位三元配合物的一般组成，[Ln(hfaa) 3 (tptz)] hfaa = 六氟乙酰丙酮和 tptz = 2, 4, 6-tris- (2-吡啶基)-s-三嗪}合成并综合表征。X 射线单晶结构和核磁共振研究表明，配合物的配位结构在固态和溶液状态下均为九配位单端正方反棱柱体，与 LnO 6 N 3（来自三个 hfaa 的六个氧原子和来自一个 tptz 的三个氮原子) 多面体。如核磁共振光谱所示，复合物在非配位（氯仿）和配位（甲醇）溶剂中是稳定的，其中没有观察到任何配体的解离。纵向弛豫率（ρ = 1/T 1) 在顺磁性 Nd(III) 和 Yb(III) 配合物的情况下与其抗磁性 La(III) 类似物相比非常快，这表明它们可能用作磁共振成像中的弛豫探针。配合物在紫外光激发下显示出特征性的近红外发射跃迁；4 F 3/2 → 4 I