| 155350-25-7

• CAS: 155350-25-7
• 化学式: C₁₈H₄₇BrOsP₂
• 分子量: 595.623
• InChiKey: XDVUBMLOMKOJBQ-UHFFFAOYSA-M

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：

  dibromo(dihydrido)osmium;tri(propan-2-yl)phosphane 、 氢气 以 not given 为溶剂， 生成
  参考文献：
  名称：

  Dihydrogen addition to (PiPr3) 2OsX H4−

  摘要：

  Reaction of H-2 with L2Os(X)(Y)(H)(2) (L=(PPr3)-Pr-i; X, Y = Cl, Br, I) slowly (minutes) gives a 1:1 'adduct'. The X-ray structure of L2OsH4Br2 shows, like the chloride analog, a substantial change in geometry upon reaction with H-2, to give a heavy atom OsX2L2 skeleton of C-2v geometry, with cis halides and trans phosphines. Attempts are made to distinguish between Os(H)(4), Os(H-2)(2) and Os(H)(2)(H-2) structures using J(HD) and T-1min criteria. Study of L2OsXnH4-n species shows no monotonic trend in the Delta G(double dagger) for H-2 loss, being higher for both n=0 and n=2 than for n=1. Studied as a function of X(=Cl, Br, I), H-2 binding to L2Os(H)(2)X-2 is favored enthalpically but disfavored entropically for the larger, least electronegative halide. The X-ray structure of L2OsDCl3 shows this unsaturated species to have significant angular distortions from octahedral geometry, consistent with its diamagnetic character. (C) 1997 Elsevier Science S.A.

  DOI：

  10.1016/s0022-328x(96)06914-8