cyclooctatetraenyl(pentamethylcyclopentadienyl)dysprosium(III) | 120034-35-7

• 英文名称: cyclooctatetraenyl(pentamethylcyclopentadienyl)dysprosium(III)
• 英文别名: (pentamethylcyclopentadienyl)Dy(cyclooctatetraene(2-))；(Cp*)Dy(COT)
• CAS: 120034-35-7
• 化学式: C₁₈H₂₃Dy
• 分子量: 401.881
• InChiKey: BSOORJUFTKQGAT-PTIOOZHGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 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：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  (C₈H₈)DyCl(CH₂CH₂CH₂CH₂O) 、 sodium pentamethylcyclopentadienide 以 四氢呋喃 为溶剂， 以70%的产率得到cyclooctatetraenyl(pentamethylcyclopentadienyl)dysprosium(III)
  参考文献：
  名称：

  镧系元素的有机金属化合物。48.稀土的环辛基戊烯基五甲基环戊二烯基衍生物

  摘要：

  DOI：

  10.1021/om00108a002

文献信息

• Series of Lanthanide Organometallic Single-Ion Magnets
  作者：Shang-Da Jiang、Shan-Shan Liu、Li-Nan Zhou、Bing-Wu Wang、Zhe-Ming Wang、Song Gao

  DOI：10.1021/ic202511n

  日期：2012.3.5

  The synthesis, structures, and magnetic properties of a series of lanthanide organometallic mixed sandwich molecules, (Cp*)Ln(COT), are investigated, where Cp* is the pentamethylcyclopentadiene anion and COT is the cyclooctatetraene dianion and Ln represents Tb-III, Dy-III, Ho-III, Er-III, and Tail Among the five complexes, Dy and Ho complexes are determined to be single-ion magnets in addition to the previously reported Er complex. Both Dy and Ho complexes show obvious quantum tunneling magnetization relaxation in the absence of a static field. The diluted Ho complex behaves two sets of thermally activated relaxation as we reported previously in Er due to the COT ring static disorder. A stair-shaped hysteresis for the Er compound can be observed at 1.6 K with Hc = 1 kOe at a sweeping rate over 700 Oe/s. The quantum tunneling decoherence relaxation rate increases from Er to Ho to Dy, which may be caused by the relative increase of transverse anisotropy coming from the larger tilting of the two aromatic rings within the molecule. The fine electronic structure is analyzed with ligand-field theory employing the effective Hamiltonian method. The zero-field splitting is determined to be Ising type, and the energy gap between the ground state and the first excited one is consistent with the barrier obtained by Arrhenius analysis.