tris(1,1,1,5,5,5-hexafluoropentane-2,4-dionata)diaqualanthanum | 33751-73-4

• 分子结构分类: 有机化合物 - 有机卤素化合物
• 英文名称: tris(1,1,1,5,5,5-hexafluoropentane-2,4-dionata)diaqualanthanum
• 英文别名: [La^III(hfac)₃(H₂O)₂]；La(hfac)₃(H₂O)₂；La(hexafluoroacetylacetone)3(H2O)2；[La(hfac)3(water)2]
• CAS: 33751-73-4
• 化学式: C₁₅H₇F₁₈LaO₈
• 分子量: 796.093
• InChiKey: BDGPIHTZSSSTMO-UHFFFAOYSA-N

计算性质

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

反应信息

• 作为反应物：
  描述：

  tris(1,1,1,5,5,5-hexafluoropentane-2,4-dionata)diaqualanthanum 、 [Co^II(N,N'-dimethyl-N,N'-bis(2-hydroxy-3,5-dimethylbenzyl)ethylenediamine)(PhCOO)₂] 以 乙醇 为溶剂， 反应 6.0h， 以48%的产率得到
  参考文献：
  名称：

  Tetranuclear Hetero-Metal [Co^II₂Ln^III₂] (Ln = Gd, Tb, Dy, Ho, La) Complexes Involving Carboxylato Bridges in a Rare μ₄–η²:η² Mode: Synthesis, Crystal Structures, and Magnetic Properties

  摘要：

  A new family of 3d-4f heterometal 2 X 2 complexes [Co-2(II)(L)(2)(PhCOO)(2)Ln(2)(III)(hfac)(4)] (1-5) (Ln = Gd (compound 1), Tb (compound 2), Dy (compound 3), Ho (compound 4), and La (compound 5)) have been synthesized in moderate yields (48-63%) following a single-pot protocol using stoichiometric amounts (1:1 mol ratio) of [Co-II(H2L)-(PhCOO)(2)] (H2L = N,N '-dimethyl-N,N '-bis(2-hydroxy-3,5-dimethylbenzyl)ethylenediamine) as a metalloligand and [Ln(III)(hfac)(3)(H2O)(2)] (Hhfac = hexafluoroacetylacetone) as a lanthanide precursor compound. Also reported with this series is the Zn-Dy analog [Zn-2(II)(L)(2)(PhCOO)(2)Dy-2(III)(hfac)(4)] 6 to help us in understanding the magnetic properties of these compounds. The compounds 1-6 are isostructural. Both hexafluoroacetylacetonate and benzoate play crucial roles in these structures as coligands in generating a tetranuclear core of high thermodynamic stability through a self-assembly process. The metal centers are arranged alternately at the four corners of this rhombic core, and the carboxylato oxygen atoms of each benzoate moiety bind all of the four metal centers of this core in a rare mu(4)-eta(2):eta(2) bridging mode as confirmed by X-ray crystallography. The magnetic susceptibility and magnetization data confirm a paramagnetic behavior, and no remnant magnetization exists in any of these compounds at vanishing magnetic field. The metal centers are coupled in an antiferromagnetic manner in these compounds. The [(Co2Dy2III)-Dy-II] compound exhibits a slow magnetic relaxation below 6 K, as proven by the AC susceptibility measurements; the activation energy reads U/k(B) = 8.8 K (tau(0) = 2.0 X 10(-7) s) at B-DC = 0, and U/k(B) = 7.8 K (tau(0) = 3.9 x 10(-7) s) at B-DC = 0.1 T. The [Zn(2)(II)D7(2)(III)] compound also behaves as a single-molecule magnet with U/k(B) = 47.9 K and tau(0) = 2.75 X 10(-7) s.

  DOI：

  10.1021/ic401484d
• 作为产物：
  描述：

  水 、 六氟乙酰丙酮 、 lanthanide(III)chloride heptahydrate 在 ammonium hydroxide 作用下， 以 乙醚 、 水 为溶剂， 以Ca. 60 %的产率得到tris(1,1,1,5,5,5-hexafluoropentane-2,4-dionata)diaqualanthanum
  参考文献：
  名称：

  与 Ln(六氟乙酰丙酮)3 核配位的三联吡啶基咪唑配体：合成、结构表征、发光性能以及溶液和 PMMA 薄膜中的热敏行为

  摘要：

  一系列新的三元镧系元素配合物 [Ln(hfa) 3 (tpy-HImzphen)] 已被合成并彻底表征，其中 Ln = La III ( 1 )、Eu III ( 2 )、Sm III ( 3 ) 和铽Ⅲ ( 4 )； hfa = 六氟乙酰丙酮酸盐； tpy-HImzphen = 2-(4-[2,2′:6′,2″]三联吡啶-4′-基-苯基)-1H-菲并[9,10 -d ]咪唑。将 tpy-HImzphen 掺入 Ln-hfa 部分会引起复合物吸收窗口向可见光区域的红移。在室温和 77 K 下对发光特性进行了广泛的研究，以了解复合物的失活途径。稳态和时间分辨发射光谱行为都表明 tpy-HImzphen 掺入到镧系元素核上时有四种独特的行为，即 La III的配体中心峰的巨大红移； Eu III的能量几乎完全转移； Sm III的能量转移很少，而 Tb III的能量转移相反。此外，Eu III配合物在溶液状态以及聚甲基丙烯酸甲酯

  DOI：

  10.1021/acs.inorgchem.4c01132

文献信息

• Doubly TEMPO-coordinated gadolinium(<scp>iii</scp>), lanthanum(<scp>iii</scp>), and yttrium(<scp>iii</scp>) complexes. Strong superexchange coupling across rare earth ions
  作者：Rina Murakami、Takeshi Nakamura、Takayuki Ishida

  DOI：10.1039/c3dt53586j

  日期：——

  The X-ray crystal structure of TEMPO-coordinated lanthanide compounds was determined for the first time. The magnetic study clarified that [Gd(hfac)₃(TEMPO)₂] behaved as a ground S_total = 7/2 species. The La and Y analogues showed the superexchange interactions across the diamagnetic ions.

  TEMPO配位的稀土化合物的X射线晶体结构首次被确定。磁学研究表明[Gd（hfac）₃（TEMPO）₂]表现为一个基态S_total = 7/2的物种。镧和钇的类似物显示了穿过非磁性离子的超交换相互作用。
• Structure and magnetic properties of 3d–4f heterometallic complexes containing di-2-pyridyl ketoximate: An approach to single-molecule magnets
  作者：Fumihito Mori、Takayuki Ishida、Takashi Nogami

  DOI：10.1016/j.poly.2005.03.154

  日期：2005.11

  [Ln(hfac)(3)}(2)Ni(dpk)(2)(phen)}] (1Ln) and [Ln(hfac)(3)}(2)Ni(dpk)(2)(py)(2)}] (2Ln) were synthesized and characterized, where dpk = di-2-pyridyl ketoxmate and Ln = La, Tb, Dy, Ho, Er. The N-0 groups from dpk bridged the central nickel(11) ion and terminal lanthanicle(111) ions, giving a linear trinuclear array. Dc magnetic susceptibility measurements revealed that they did not possess appreciable intramolecular ferromagnetic or ferrimagnetic interaction. Ac magnetic susceptibility measurements clarified that frequency dependence of out-of-phase ac susceptibility was observed only for Dy derivatives 1Dy and 2Dy, which is regarded as an indication of single-molecule magnets. (c) 2005 Elsevier Ltd. All rights reserved.
• Magnetic Interactions in Cu^II−Ln^III Cyclic Tetranuclear Complexes:  Is It Possible to Explain the Occurrence of SMM Behavior in Cu^II−Tb^III and Cu^II−Dy^III Complexes?
  作者：Takefumi Hamamatsu、Kazuya Yabe、Masaaki Towatari、Shutaro Osa、Naohide Matsumoto、Nazzareno Re、Andrzej Pochaba、Jerzy Mrozinski、Jean-Louis Gallani、Alessandro Barla、Paolo Imperia、Carley Paulsen、Jean-Paul Kappler

  DOI：10.1021/ic062252s

  日期：2007.5.1

  An extensive series of tetranuclear Cu(2)(II)Ln(2)(III) complexes [Cu(II)LLn(III)(hfac)(2)](2) (with Ln(III) being all lanthanide(III) ions except for the radioactive Pm-III) has been prepared in order to investigate the nature of the Cu-II-Ln(III) magnetic interactions and to try to answer the following question: What makes the (Cu2Tb2III)-Tb-II and (Cu2Dy2III)-Dy-II complexes single molecule magnets while the other complexes are not? All the complexes within this series possess a similar cyclic tetranuclear structure, in which the Cu-II and Ln(III) ions are arrayed alternately via bridges of ligand complex ((CuL)-L-II). Regular SQUID magnetometry measurements have been performed on the series. The temperature-dependent magnetic susceptibilities from 2 to 300 K and the field-dependent magnetizations from 0 to 5 T at 2 K have been measured for the Cu(2)(II)Ln(2)(III) and Ni(2)(II)Ln(2)(III) complexes, with the Ni(2)(II)Ln(2)(III) complex containing diamagnetic Ni-II ions being used as a reference for the evaluation of the Cu-II-Ln(III) magnetic interactions. These measurements have revealed that the interactions between Cu-II and Ln(III) ions are very weakly antiferromagnetic if Ln = Ce, Nd, Sm, Yb, ferromagnetic if Ln = Gd, Tb, Dy, Ho, Er, Tm, and negligible if Ln = La, Eu, Pr, Lu. With the same goal of better understanding the evolution of the intramolecular magnetic interactions, X-ray magnetic circular dichroism (XMCD) has also been measured on (Cu2Tb2III)-Tb-II, (Cu2Dy2III)-Dy-II, and (Ni2Tb2III)-Tb-II complexes, either at the L- and M-edges of the metal ions or at the K-edge of the N and O atoms. Last, the (Cu2Tb2III)-Tb-II complex exhibiting SMM behavior has received a closer examination of its low temperature magnetic properties down to 0.1 K. These particular measurements have revealed the unusual very slow setting-up of a 3D order below 0.6 K.