(η(5)-C5Me5)2Cr2(μ-CO)3 | 128000-60-2

• 英文名称: (η(5)-C5Me5)2Cr2(μ-CO)3
• CAS: 128000-60-2
• 化学式: C₂₃H₃₀Cr₂O₃
• 分子量: 458.481
• InChiKey: CTKQEJCMNQBVHQ-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  (η(5)-C5Me5)2Cr2(μ-CO)3 、 一氧化碳 以 正庚烷 为溶剂， 生成 ((η5-C5Me5)Cr(CO)2)2
  参考文献：
  名称：

  Unusual Structure and Reactivity of the Photogenerated Intermediate Cp*Cr(μ-CO)₃CrCp* (Cp* = η⁵-C₅Me₅)

  摘要：

  Employing time-resolved IR spectroscopy, we have demonstrated that, following photolysis of [Cp*Cr(CO)(2)](2) (1) in n-heptane, the only initial photoproduct is the triply bridged CO-loss intermediate Cp*Cr(mu-CO)(3)CrCp* (4). True bridging nu(CO) bands are observed, resulting from the splitting of the e' mode of 4, which leads to the conclusion that the CO bridging groups are asymmetric. The rate of the back reaction of 4 with CO has been measured (k(2) = 5.2 (+/-0.5) x 10(7) M-1 s(-1)), and this is 1000 times faster than the rate of the analogous back reaction of CO with CpFe(mu-CO)(3)FeCp. Moreover, unlike many CO-loss intermediates, there is no reaction of 4 with PPh3. The rate of reaction of 4 with THF, to produce Cp*Cr-2(2)(CO)(3)(THF) (6), has been estimated (k(2) = 1.6 (+/-0.2) x 10(8) M-1 s(-1)).

  DOI：

  10.1021/om970641b
• 作为产物：
  描述：

  ((η5-C5Me5)Cr(CO)2)2 以 正庚烷 为溶剂， 生成 (η(5)-C5Me5)2Cr2(μ-CO)3
  参考文献：
  名称：

  Unusual Structure and Reactivity of the Photogenerated Intermediate Cp*Cr(μ-CO)₃CrCp* (Cp* = η⁵-C₅Me₅)

  摘要：

  Employing time-resolved IR spectroscopy, we have demonstrated that, following photolysis of [Cp*Cr(CO)(2)](2) (1) in n-heptane, the only initial photoproduct is the triply bridged CO-loss intermediate Cp*Cr(mu-CO)(3)CrCp* (4). True bridging nu(CO) bands are observed, resulting from the splitting of the e' mode of 4, which leads to the conclusion that the CO bridging groups are asymmetric. The rate of the back reaction of 4 with CO has been measured (k(2) = 5.2 (+/-0.5) x 10(7) M-1 s(-1)), and this is 1000 times faster than the rate of the analogous back reaction of CO with CpFe(mu-CO)(3)FeCp. Moreover, unlike many CO-loss intermediates, there is no reaction of 4 with PPh3. The rate of reaction of 4 with THF, to produce Cp*Cr-2(2)(CO)(3)(THF) (6), has been estimated (k(2) = 1.6 (+/-0.2) x 10(8) M-1 s(-1)).

  DOI：

  10.1021/om970641b