[Li(DME)₂][Th(CH₂SiMe₃)₅] | 1383918-87-3

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: [Li(DME)₂][Th(CH₂SiMe₃)₅]
• CAS: 1383918-87-3
• 化学式: C₈H₂₀LiO₄*C₂₀H₅₀Si₅Th
• 分子量: 850.268
• InChiKey: RXOHXJQQSSDBSQ-UHFFFAOYSA-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：

  ThCl₄(DME)₂ 、 trimethylsilylmethyllithium 以 四氢呋喃 、 乙醚 为溶剂， 反应 0.25h， 以54%的产率得到[Li(DME)₂][Th(CH₂SiMe₃)₅]
  参考文献：
  名称：

  追求同系Act系烷基配合物

  摘要：

  本论坛文章描述了对可分离的均化act系烷基络合物的追求，首先是在曼哈顿项目期间吉尔曼的开创性工作。该领域的初步报告表明，均相铀烷基化合物太不稳定而无法分离，但威尔金森证明，有目的的“盐”配合物形成可以生成易处理的铀烷基，这可以使铀配位体饱和并为化合物提供更大的配合物。动力学稳定性。最近，我们报道了几种均质铀烷基络合物的固态分子结构，包括[Li（THF）4 ] [U（CH 2 t Bu）5 ]，[Li（TMEDA）] 2 [UMe 6 ]，[ K（THF）] 3通过使用威尔金森氏策略，[K（THF）2 ] [U（CH 2 Ph）6 ] 2和[Li（THF）4 ] [U（CH 2 SiMe 3）6 ]。在此，我们描述了将这种化学作用扩展到extend的尝试。在-25°C的THF中用5当量的LiCH 2 t Bu或LiCH 2 SiMe 3处理ThCl 4（DME）2可获得[Th（CH 2 t Bu）5

  DOI：

  10.1021/ic300867m

文献信息

• Chemical Speciation of Neptunium(VI) under Strongly Alkaline Conditions. Structure, Composition, and Oxo Ligand Exchange
  作者：David L. Clark、Steven D. Conradson、Robert J. Donohoe、Pamela L. Gordon、D. Webster Keogh、Phillip D. Palmer、Brian L. Scott、C. Drew Tait

  DOI：10.1021/ic3020139

  日期：2013.4.1

  Heacavalent neptunium can be solubilized in 0.5-3.5 M aqueous MOH (M = Li+, Na+, NMe4+ = TMA(+)) solutions. Single crystals were obtained from cooling of a dilute solution of Co(NH3)(6)Cl-3 and NpO22+ in 3.5 M [N(Me)(4)]OH to 5 C. A single-crystal X-ray diffraction study revealed the molecular formula of [Co(NH3)(6)](2)[NpO2(OH)(4)](3)center dot H2O, isostructural with the uranium analogue. The asymmetric unit contains three distinct NpO2(OH)(4)(2-) ions, each with pseudooctahedral coordination geometry with trans-oxo ligands. The average Np=O and Np-OH distances were determined to be 1.80(1) and 2.24(1) angstrom, respectively. EXAFS data and fits at the Np L-III-edge on solid [Co(NH3)(6)](2)[NpO2(OH)(4)](3)center dot H2O and aqueous solutions of NpO22+ in 2.5 and 3.5 M (TMA)OH revealed bond lengths nearly identical with those determined by X-ray diffraction but with an increase in the number of equatorial ligands with increasing (TMA)OH concentration. Raman spectra of single crystals of [Co(NH3)(6)](2)[NpO2(OH)(4)](3)center dot H2O reveal a nu(1)(O=Np=O) symmetric stretch at 741 cm(-1). Raman spectra of NpO22+ recorded in a 0.6-2.2 M LiOH solution reveal a single nu(1) frequency of 769 cm(-1). Facile exchange of the neptunyl oxo ligands with the water solvent was also observed with Raman spectroscopy performed with O-16- and O-18-enriched water solvent. The combination of EXAFS and Raman data suggests that NpO2(OH)(4)(2-) is the dominant solution species under the conditions of study and that a small amount of a second species, NpO2(OH)(5)(3-), may also be present at higher alkalinity. Crystal data for [Co(NH3)(6)](2)[NpO2(OH)(4)](3)center dot H2O: monoclinic, space group C2/c, a = 17.344(4) angstrom, b = 12.177(3) angstrom, c = 15.273 angstrom, beta = 120.17(2)degrees, Z = 4, R1 = 0.0359, wR2 = 0.0729.