hexahydrido(pentamethylcyclopentadienyl)osmium(VIII) tetrafluoroborate | 922719-64-0

• 英文名称: hexahydrido(pentamethylcyclopentadienyl)osmium(VIII) tetrafluoroborate
• CAS: 922719-64-0
• 化学式: BF₄*C₁₀H₂₁Os
• 分子量: 418.281
• InChiKey: YIGNLDPZMIIKEW-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

• 作为产物：
  描述：

  四氟硼酸-二乙醚络合物 、 (η5-pentamethylcyclopentadienyl)pentahydridoosmium 以 乙醚 、 正己烷 为溶剂， 以59%的产率得到hexahydrido(pentamethylcyclopentadienyl)osmium(VIII) tetrafluoroborate
  参考文献：
  名称：

  Synthesis and Characterization of Osmium Polyhydrides. X-ray Crystal Structures of (C₅Me₅)OsH₅ and (C₅Me₅)₂Os₂H₄

  摘要：

  Treatment of (C5Me5)(2)Os2Br4 with LiAlH4 in Et2O followed by addition of MeOH at -78 degrees C affords two products: the osmium(VI) pentahydride (C5Me5)OsH5 and the dinuclear osmium(III) tetrahydride (C5Me5)(2)Os2H4. The X-ray crystal structures reveal that (C5Me5)OsH5 adopts a pseudo-octahedral geometry with one axial and four equatorial hydride ligands, whereas all four hydride ligands in (C5Me5)(2)Os2H4 bridge the osmium-osmium axis. Treatment of (C5Me5)OsH5 with HBF4 center dot Et2O affords the osmium(VIII) hexahydride [(C5Me5)OsH6][BF4], which evidently adopts a classical polyhydride structure, as judged from variable-temperature T-1 studies. Treatment of (C5Me5)OsH5 with tert-butyllithium in the presence of N,N,N',N' ',N' '-pentamethyldiethylenetriamine (pmdeta) affords the osmium(IV) tetrahydride salt [Li(pmdeta)][(C5Me5)OsH4], which is proposed to adopt a four-legged piano stool geometry. IR and NMR studies of the Os-D analogues of these new osmium hydrides are also discussed.

  DOI：

  10.1021/om060920b