tungsten hexamethoxide | 35869-33-1

• 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: tungsten hexamethoxide
• 英文别名: W(OMe)6
• CAS: 35869-33-1
• 化学式: C₆H₁₈O₆W
• 分子量: 370.055
• InChiKey: BCXDNCKWFAAAII-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.58
• 重原子数：
  13.0
• 可旋转键数：
  6.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  55.38
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  4-苄氧基苯酚 、 tungsten hexamethoxide 以 甲苯 为溶剂， 以91%的产率得到hexa(4-benzyloxyphenoxy)tungsten
  参考文献：
  名称：

  Hydrogen bonds between polyphenol (p-HOC6H4O)6W and bipyridines: (4,4′-bipy·HOC6H4O)6W and 3-D networks [{4,4′-(NC5H4)2(CH2CH2)}n{(HOC6H4O)6W}]∞ (n = 2, 3)

  摘要：

  多酚（p-HOC6H4O）6W 具有稳定的缩合性，在与 4,4â²-联吡和 1,2-二-4-吡啶乙烷处理时，分别形成了（4,4â²-联吡-HOC6H4O）6W 和三维网络 [{4,4â²-(NC5H4)2(CH2 CH2)}n{(HOC6H 4- O)6W}]â （n = 2，3）。

  DOI：

  10.1039/b100561h
• 作为产物：
  描述：

  六氯化钨 在 Na 、 methanol 作用下， 以 甲醇 、 乙醚 为溶剂， 以15%的产率得到tungsten hexamethoxide
  参考文献：
  名称：

  Kucheiko, S. I.; Turova, N. Ya.; Kozlova, N. I., Koordinatsionnaya Khimiya, 1985, vol. 11, p. 961 - 966

  摘要：

  DOI：

文献信息

• Kessler, Vadim G.; Panov, Andrei N.; Turova, Nataliya Ya., Journal of the Chemical Society, Dalton Transactions, 1998, # 1, p. 21 - 30
  作者：Kessler, Vadim G.、Panov, Andrei N.、Turova, Nataliya Ya.、Starikova, Zoya A.、Yanovsky, Alexandr I.、et al.

  DOI：——

  日期：——
• Jacob, Eberhard, Angewandte Chemie, 1982, vol. 94, p. 146 - 147
  作者：Jacob, Eberhard

  DOI：——

  日期：——
• Kucheiko, S. I.; Turova, N. Ya.; Kozlova, N. I., Koordinatsionnaya Khimiya, 1985, vol. 11, p. 867 - 875
  作者：Kucheiko, S. I.、Turova, N. Ya.、Kozlova, N. I.、Zhadanov, B. V.

  DOI：——

  日期：——
• Syntheses and electrochemistry of (p-XC6H4O)6W (1-X, X=H, CH3, OCH3, Cl, Br, OH, OCH2Ph) and (p-XC6H4O)5W(OC6H4OH) (X=H, CH3, OCH3, Cl, Br): an approach to electrocatalytic CH bond activation
  作者：Orson L. Sydora、Jonas I. Goldsmith、Thomas P. Vaid、Abigail E. Miller、Peter T. Wolczanski、Hector D. Abruña

  DOI：10.1016/j.poly.2004.08.006

  日期：2004.11

  Alcoholysis of W(OMe)(6) afforded (p-PhCH2OC6H4O)(6)W (1-OCH2Ph), which could be hydrogenated (10% Pd/C, 1 atm H-2) to prepare (p-HOC6H4O)(6)W (1-OH). Related alcoholyses of WCl6 with HOC6H4-p-X provided the hexaphenoxides (p-XC6H4O)(6)W (1-X, X = H, CH3, OCH3, Cl, Br) through minor modifications of literature procedures. Acid catalyzed treatment of 1-X with p-HOC6H4OCH2Ph provided a mixture of substitution products (p-XC6H4O)(6-x)W(OC6H4OCH2Ph), (x = 1, 5-X) that could be hydrogenated (10% Pd/C, 1 atm H-2) to a mixture of hydroxylated products. Chromatography permitted isolation of (p-XC6H4O)(5)W(OC6H4OH) (6-X, X = H, 19%; Me, 29%; OCH3, 19%; Cl, 12%; Br, 11%) in modest yields. Hexaphenoxides 1-X and 6-X manifested two electrochemical reduction waves whose positions were a function of para-substituent. When oxidized, 6-X and 1-OH were proposed to behave as W(V)quinone mimics, albeit at potentials capable of oxidizing hydrocarbons as shown via a thermochemical cycle. If the proposed transients (p-XC6H4O)(5)W(OC6H4O) (7-X) were generated, degradation was apparently competitive with CH bond activation. The structure of oligomeric K[(p-ClC6H4O)(6)W]}(infinity) (8-Cl) is addressed, and comments on the nature of radical CH bond activation in this and related systems are presented. (C) 2004 Elsevier Ltd. All rights reserved.
• Solid state and solution studies of tungsten(VI) oxotetraalkoxides
  作者：William Clegg、R. John Errington、Peter Kraxner、Carl Redshaw

  DOI：10.1039/dt9920001431

  日期：——

  Variable-temperature H-1 NMR studies of the oxoalkoxides, WO(OR)4 (R = Me, Et, Pr(i), or cyclo-C6H11), show these compounds to be dynamic in solution. For R = Me or Et, limiting spectra have been obtained which are consistent with alkoxide-bridged binuclear structures, and for R = Me or cyclo-C6H11, X-ray diffraction studies confirm that these structures are adopted in the solid state. The alkoxide bridges are asymmetric [R = Me, 2.032(7) and 2.242(12) angstrom (average); R = cyclo-C6H11, 2.044(4) and 2.250(4) angstrom] and coplanar with the terminal oxo groups, the longer W-OR bonds being trans to the short W = O bonds. Tungsten-183 NMR chemical shifts of the compounds with R = Me, Et, cyclo-C6H11, Bu(t) or C6H3Pr(i)2-2,6 are very sensitive to the nature of the alkoxo ligand, and range from delta -62.9 for [WO(OMe)4}2] to -493.6 for mononuclear [WO(OC6H3Pr(i)2-2,6)4]. Possible solution equilibria are discussed in the light of these NMR results. An attempt to prepare [WO(OC6H4Me-4)4] yielded [W(OC6H4Me-4)6], and an X-ray crystal structure determination showed this compound to be octahedral with an average W-O bond length of 1.895(9) angstrom.