cis-[Ru(H2O)4(ethylene)2](2+) | 148161-28-8

• 英文名称: cis-[Ru(H2O)4(ethylene)2](2+)
• CAS: 148161-28-8
• 化学式: C₄H₁₆O₄Ru
• 分子量: 229.239
• InChiKey: HEFVIFIVERPAGE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 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：
  None
• 氢给体数：
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• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  hexaaquaruthenium(II) 、 乙烯 以 水 为溶剂， 生成 cis-[Ru(H2O)4(ethylene)2](2+)
  参考文献：
  名称：

  水性钌 (II) 化学方面

  摘要：

  自从 80 年代初发表了 [Ru(H2O)(6)](tos)(2) 的第一个简便合成方法以来，描述了几种 Ru-II 水性无机和有机金属配合物，表明人们对这种由于在催化和医学方面的潜在应用而产生的化合物。了解是什么控制了 Ru-II 中心的第一个配位球中配体的反应性。我们讨论了它的溶液行为，从最简单的水性物质 [Ru(H2O)(6)](2-) 开始，并通过选定的例子逐渐复杂化。此外，我们提出了具有两个目标的可变压力测量，以确定机械分配的激活量。并通过增加气体分子的溶解度来改变平衡。

  DOI：

  10.1002/1522-2675(20011017)84:10<2854::aid-hlca2854>3.0.co;2-e

文献信息

• Mechanism of Complex Formation of Ruthenium(II) Aquacomplexes with H₂CCH₂, MeCN, Me₂SO, and CO:  Metal−Water Bond Rupture as Rate-Determining Step
  作者：Nicolas Aebischer、Raphaël Churlaud、Lilian Dolci、Urban Frey、André E. Merbach

  DOI：10.1021/ic980628z

  日期：1998.11.1

  The reaction [Ru(H2O)(6)](2+) + L -->(kf) [RU(H2O)(5)L](2+) + H2O was followed as a function of temperature and ethylene concentration (up to 40 MPa) using a homemade high gas pressure NMR microreactor. The reaction was first order in H2C=CH2 with 10(3)kf(298)/kg mol(-1) s(-1) = 1.22 +/- 0.06, Delta H(f)double dagger/kJ mol(-1) = 76.9 +/- 2, and Delta S(f)double dagger/J K-1 mol(-1) = -42.9 +/- 8. These results confirm previous works on mono-complex formation reactions where an Id mechanism was proposed. The reaction [Ru(H2O)5L]2+ + *L reversible arrow(kL) [Ru(H2O)(5)*L](2+) + L of exchange of L on the mono-complex was followed for L = H2C=CH2 (10(3)k(L)/kg mol(-1) s(-1) = 10.8 at 298.2 K), Me2SO (0.35 at 278.5 K), and CO (0.052 at 298.3 K); the rate-determining step is the rupture of the Ru-(HOax)-O-2 bond with trans-Ru(H2O)(4)L-2](2+) as reaction intermediate. Due to the trans effect exercised by these strong pi-accepting ligands, the ligand exchange reaction is faster than the mono-complex formation reactions. The cis-bis-complex formation reaction, [Ru(H2O)(5)L](2+) + L -->(kcis) cis-[Ru(H2O)(4)L-2](2+) + H2O, was also investigated for L = MeCN (10(3)k(cis)/kg mol(-1) s(-1) = 0.111 at 298.1 K), Me2SO (0.019 at 321.6 K), and H2C=CH2 (0.007 at 298.1 K, Delta H(cis)double dagger/kJ mol(-1) = 129.9 +/- 4, and Delta S(cis)double dagger/J K-1 mol(-1) = +92.0 +/- 11); here, too, the Ru-H2Oeq bond breaking is rate determining, but due to the decrease of the lability of water molecules cis to pi-accepting ligands, these reactions are much slower. In the case of MeCN, the reaction scheme includes the formation of the trans-bis-complex and of the mer-triscomplex. As a general rule, the rate of these complex formation reactions,of dissociative nature, can be predicted from the oxygen-17 determined water exchange rates.