sodium undecatungstosilicate | 64684-54-4

• 英文名称: sodium undecatungstosilicate
• CAS: 64684-54-4
• 化学式: 8Na*O₃₉SiW₁₁
• 分子量: 2858.33
• InChiKey: KDZCZBOUOKMTNX-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

• 作为反应物：
  描述：

  sodium undecatungstosilicate 、 ammonium cerium (IV) nitrate 以 水 为溶剂， 以80%的产率得到
  参考文献：
  名称：

  Maksimov; Maksimovskaya; Kholdeeva, Russian Journal of Inorganic Chemistry, 2004, vol. 49, # 9, p. 1325 - 1330

  摘要：

  DOI：
• 作为产物：
  描述：

  sodium metasilicate nonahydrate 、 H₄SiW₁₂O₄₀*12H₂O 在 NaOH 作用下， 以 水 为溶剂， 生成 sodium undecatungstosilicate
  参考文献：
  名称：

  Maksimov; Maksimovskaya; Kholdeeva, Russian Journal of Inorganic Chemistry, 2004, vol. 49, # 9, p. 1325 - 1330

  摘要：

  DOI：

文献信息

• Tungsten-183 NMR: a complete and unequivocal assignment of the tungsten-tungsten connectivities in heteropolytungstates via two-dimensional tungsten-183 NMR techniques
  作者：C. Brevard、R. Schimpf、G. Tourne、C. M. Tourne

  DOI：10.1021/ja00362a008

  日期：1983.11

  Utilisation de deux sequences spectroscopiques RMN a deux dimensions, de type COSY, et INADEQUATE, pour determiner sans ambiguite une attribution des liaisons tungstene-tungstene dans les heteropolytungstates

  使用 de deux 序列光谱 RMN a deux 维度, de type COSY, et INADEQUATE, pourdeterminer sans ambiguite une attribution des liaisons钨-钨和杂多钨酸盐
• Aerobic Oxidation of Formaldehyde Mediated by a Ce-Containing Polyoxometalate under Mild Conditions
  作者：Oxana A. Kholdeeva、Maria N. Timofeeva、Gennadii M. Maksimov、Raisa I. Maksimovskaya、Wade A. Neiwert、Craig L. Hill

  DOI：10.1021/ic049109o

  日期：2005.2.1

  An evaluation of over 50 polyoxometalates (POMs) identified the complex NaH3 [(SiW11CeO39)-O-IV] (NaH(3)1) as a selective and effective catalyst for the aerobic oxidation of formaldehyde to formic acid under very mild (including ambient) conditions. W-183 NMR, UV-vis, cyclic voltammetry, and potentiometric titration establish that the catalyst is a monomer (C-s symmetry), 1, in solution, while X-ray crystallography (a = 12.9455(15) Angstrom, b = 13.2257(16) Angstrom, c = 14.5288(17) Angstrom, alpha = 81.408(2)degrees, beta = 85.618(2)degrees, gamma = 80.726(2)degrees, P1 P(1) over bar, Z = 1, R1 = 5.79% based on 17244 independent reflections) and IR establish it to be a dimer (C-i symmetry), 1(2), in the solid state. Several lines of evidence, including the parabolic kinetic order in 1, nonlinear Arrhenius plot, independence of the rate on O-2 pressure, presence of titratable H2O2 and HCO3H intermediates, and inhibition by conventional radical scavengers, all indicate the O-2-based oxidations proceed by complex homolytic chemistry (autoxidation and Haber-Weiss radical-chain processes) likely initiated by protonated 1.
• Polyoxometalates supporting cyclopendienylzirconium : a new kind of olefin polymerization catalyst
  作者：Xiaohong Wang、Feng Li、Yaguang Chen

  DOI：10.1016/j.inoche.2004.11.007

  日期：2005.1

  New polyoxometalates supporting cyclopendienylzirconium CpZrXW11O39n-(X = Si, Ge, Ga, B) have been synthesized and structurally characterized by elemental analyses, IR spectra and NMR spectroscopy. The new complexes exhibited catalytic activity for ethylene polymerization. (C) 2004 Elsevier B.V. All rights reserved.