tetramethyloxoosmium(VI) | 130149-61-0

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: tetramethyloxoosmium(VI)
• CAS: 130149-61-0
• 化学式: C₄H₁₂OOs
• 分子量: 266.339
• InChiKey: JKQRQXABBVPSEV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.21
• 重原子数：
  6.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为产物：
  描述：

  四氧化锇 、 Dimethylzinc 在 ethyleneglycol 作用下， 以 not given 为溶剂， 以60%的产率得到tetramethyloxoosmium(VI)
  参考文献：
  名称：

  Herrmann, Wolfgang A.; Eder, Stefan J.; Kiprof, Paul, Angewandte Chemie, 1990, vol. 102, p. 1460 - 1463

  摘要：

  DOI：

文献信息

• Essays über Metallorganische Chemie V. Stand und Aussichten der Rhenium-Chemie in der Katalyse
  作者：Wolfgang A. Herrmann

  DOI：10.1016/0022-328x(90)85211-g

  日期：1990.2

  transition metal compounds as oxidation catalysts [2]: “The catalytic activity of technetium seems to be comparable to that of rhenium …, and both seem to be low.” The present account briefly describes the status of rhenium chemistry in catalysis, showing that there are many more perspectives than were first believed. It is shown that high-valent organorhenium oxides function as very effective catalysts

  关于催化环氧化反应的最新评论文章颇为令人沮丧的说法是，较重的VII族过渡金属化合物作为氧化催化剂[2]：“ of的催化活性似乎可与of相媲美，而both的催化活性似乎与rh相当。低的。” 本报告简要描述了化学在催化中的状态，表明与人们最初认为的观点相比，存在更多的观点。结果表明，高价有机or氧化物在烯烃复分解（非均相催化）和烯烃氧化（均相催化）中均起非常有效的催化剂的作用。在此内容中，很明显，与相邻元素钨和相比，对化学的研究和了解通常要少得多。此外，与tech化合物有关的工作是必要的，以便更好地了解相应rh化合物的催化和其他性能。除了已知的tech和inorganic之间的无机和配位化合物关系外，
• Multiple bonds between Main-Group elements and transition metals. 85. Tetramethyloxoosmium(VI): synthesis, gas-phase molecular structure, photoelectron spectroscopy, and electrochemistry
  作者：Kristin Rypdal、Wolfgang A. Herrmann、Stefan J. Eder、Rolf W. Albach、Petra Watzlowik、Hans Bock、Bahman Solouki

  DOI：10.1021/om00051a024

  日期：1991.5

  Tetramethyloxoosmium(VI) (2a), the first example of methylosmium oxides (CH3)(x)Os(y)O(z), has been synthesized from osmium tetraoxide (1a) and dimethylzinc (19% yield) or methyltris(isopropoxy)titanium (50% yield). A more directed synthesis (60% yield) is methylation of the glycolate osmium(VI) complex O = activated Os(OCH2CH2O)2 (1b), which precursor compound is in turn accessible from 1a in quantitative yield. The thermally labile ethyl derivative tetraethyloxoosmium(VI) (2b), the first well-characterized example of its class (C2H5)(x)Os(y)O(z), is also reported. The title compound 2a is an orange, air-stable, volatile, crystalline compound that melts at 74-degrees-C without decomposition. The gas-phase average molecular structure of 2a, as determined by electron diffraction techniques, is consistent with a theoretical model having C4 symmetry, with the most important parameters being r(a)(Os-C) = 209.6 (3) pm, r(a) (Os = O) = 168.1 (4) pm, and angle (OOsC) = 112.2 (5)-degrees. According to PE spectroscopic data, the d ionization of 2a occurs at 8.55 eV. The title compound 2a undergoes irreversible oxidation at +2.2 V, reversible reduction at-1.58 V (cyclic voltammetry).