二羰基铬 | 102869-00-1

• 中文名称: 二羰基铬
• 英文名称: chromium dicarbonyl
• CAS: 102869-00-1
• 化学式: C₂CrO₂
• 分子量: 108.017
• InChiKey: PMBCQCUUQKAJMY-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：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  triphenylphosphine chromium pentacarbonyl 以 neat (no solvent) 为溶剂， 生成 二羰基铬
  参考文献：
  名称：

  过渡金属羰基配合物的热降解。第三部分。铬、钼和钨的五羰基三苯基膦的热重和差示扫描量热研究

  摘要：

  摘要 M(CO) 5 (PPh 3 ) (M = Cr,Mo,W) 的热重和差示扫描量热研究揭示了一个顺序分解过程，该过程开始于约。150°C。Cr 配合物分解，同时释放一个 PPh 3 和两个 CO 配体。然而，Mo 络合物逐步消除了两个 CO 配体，然后是 Mo-PPh 3 键的断裂。W 复合物中 PPh 3 配体的排出很容易，并且发生在同时消除五个 CO 配体之前。配体的完全消除在后一种复合物中很容易发生。350 °C，这与最近文献中的微量热研究一致。降解模式取决于金属和配体的电子和空间因素。

  DOI：

  10.1016/0040-6031(88)85363-2

文献信息

• Medium effects on the photodissociation of hexacarbonylchromium (Cr(CO)6)
  作者：Jeanne A. Welch、Kevin S. Peters、Veronica Vaida

  DOI：10.1021/j100208a008

  日期：1982.5
• Photodissociation of Cr(CO)₆ in a molecular beam at 248 nm: Observation of primary and secondary photoproducts by mass spectrometry
  作者：George W. Tyndall、Robert L. Jackson

  DOI：10.1063/1.456958

  日期：1989.9

  Photodissociation of Cr(CO)6 induced by a KrF* excimer laser (248 nm) was examined under molecular beam conditions, using a quadrupole mass spectrometer with electron impact ionization (11–19 eV) to detect the products as their respective ions. The ions of all Cr(CO)x products (x=0–5) were produced upon photodissociation of Cr(CO)6 at laser fluences from 1 to 10 mJ cm−2. The quantitative behavior of the Cr(CO)+x product ion yields vs laser fluence as well as statistical rate calculations indicate that Cr(CO)4 is the major product formed upon single-photon dissociation of Cr(CO)6 under collisionless conditions at 248 nm. The additional Cr(CO)+x (x<4) product ions observed at low fluences are formed primarily by electron-impact fragmentation of Cr(CO)4 in the mass spectrometer ionizer. At laser fluences ≳5 mJ cm−2, secondary photodissociation of Cr(CO)4 becomes important. Cr(CO)2 is assigned as the major photoproduct formed via secondary photodissociation of Cr(CO)4.