diaquamethyldioxorhenium | 299423-11-3

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属有机体
• 英文名称: diaquamethyldioxorhenium
• CAS: 299423-11-3
• 化学式: CH₇O₄Re
• 分子量: 269.271
• InChiKey: FZJAXNRXVNZCIH-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：

  diaquamethyldioxorhenium 以 水 为溶剂， 生成 CH3ReO(η2-O2)2(H2O)
  参考文献：
  名称：

  Kinetics and Mechanism of Oxygen Atom Abstraction from Sulfenatocobalt(III) Complexes by Hydrated Methyldioxorhenium(V)

  摘要：

  Cationic sulfenatocobalt(III) complexes, with the remaining ligands amines, are deoxygenated upon reaction with hydrated methyldioxorhenium(V). The reactions of (Am)(5)Co-S(O)R2+ yield the thiolato complexes (Am)(5)Co-SR2+ and methyltrioxorhenium(VII), MTO. A kinetic study of these reactions was carried out, using the known reaction between MTO and hypophosphorous acid to prepare the Re(V) reagent in solution. The second-order rate constants between (Am)(5)Co-S(O)R2+ and MeReO2(aq), after correction for protonation, fall in the range 47-455 L mol(-1) s(-1) in aqueous solution at 25.0 degrees C and 1.0 M ionic strength. In the analysis of the pH effects, allowance was made for the formation of the protonated species (Am)(5)Co-S(OH)R3+ at high [H3O+]. The values of pK(a) are in the range 0.49-0.96, as determined from fitting the rate-pH profiles.

  DOI：

  10.1021/ic990425q
• 作为产物：
  描述：

  甲基三氧化铼(VII) 在 H₃PO₂ 作用下， 以 盐酸 为溶剂， 生成 diaquamethyldioxorhenium
  参考文献：
  名称：

  Kinetics and Mechanism of Oxygen Atom Abstraction from Sulfenatocobalt(III) Complexes by Hydrated Methyldioxorhenium(V)

  摘要：

  Cationic sulfenatocobalt(III) complexes, with the remaining ligands amines, are deoxygenated upon reaction with hydrated methyldioxorhenium(V). The reactions of (Am)(5)Co-S(O)R2+ yield the thiolato complexes (Am)(5)Co-SR2+ and methyltrioxorhenium(VII), MTO. A kinetic study of these reactions was carried out, using the known reaction between MTO and hypophosphorous acid to prepare the Re(V) reagent in solution. The second-order rate constants between (Am)(5)Co-S(O)R2+ and MeReO2(aq), after correction for protonation, fall in the range 47-455 L mol(-1) s(-1) in aqueous solution at 25.0 degrees C and 1.0 M ionic strength. In the analysis of the pH effects, allowance was made for the formation of the protonated species (Am)(5)Co-S(OH)R3+ at high [H3O+]. The values of pK(a) are in the range 0.49-0.96, as determined from fitting the rate-pH profiles.

  DOI：

  10.1021/ic990425q

文献信息

• Kinetics and Mechanisms of Reactions of Methyldioxorhenium(V) in Aqueous Solutions:  Dimer Formation and Oxygen-Atom Abstraction Reactions
  作者：James H. Espenson、Douglas Tak Yeung Yiu

  DOI：10.1021/ic000128h

  日期：2000.9.1

  with aqueous hypophosphorous acid, forms a colorless metastable species designated MDO, CH3ReO2(H2O)n (n = 2). After standing, MDO is first converted to a yellow dimer (lambda max = 348 nm; epsilon = 1.3 x 10(4) L mol-1 cm-1). That reaction follows second-order kinetics with k = 1.4 L mol-1 s-1 in 0.1 M aq trifluoromethane sulfonic acid at 298 K. Kinetics studies as functions of temperature gave delta

  经次磷酸水溶液处理后，稳定的化合物 ReO3（MTO）形成了称为MDO的无色亚稳态物质 ReO2（H2O）n（n = 2）。静置后，首先将MDO转换为黄色二聚体（λmax = 348 nm；ε= 1.3 x 10（4）L mol-1 cm-1）。该反应遵循二级动力学，在298 K下于0.1 M三氟甲烷磺酸水溶液中k = 1.4 L mol-1 s-1。动力学研究与温度的关系得出δS ++ = -4 +/- 15 J K-1 mol -1和δH ++ = 71.0 +/- 4.6 kJ mol-1。对于简单的二聚化，预期δS ++的负值会更大，这表明在形成过渡态时会释放一个或多个水分子。如果将二聚体的溶液放置更长时间，则会导致强烈的蓝色，然后沉淀出即使长时间后仍会沉淀的化合物，在该水溶液中保留Re-CH3键。过氧化氢产生独立已知的 Re（O）（O2）2（ ）。蓝色化合物可以类似于深着色的紫色阳离子[（Cp