| 270252-52-3

• CAS: 270252-52-3
• 化学式: C₃₇H₅₅ClOOsP₂
• 分子量: 803.444
• InChiKey: HSJHEUXJYNJEOQ-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

• 作为反应物：
  描述：

  、 氧气 以 正己烷 为溶剂， 以84%的产率得到
  参考文献：
  名称：

  Catalytic hydrogenation of acrylonitrile–butadiene copolymers by a series of osmium complexes

  摘要：

  The activity of a series of osmium complexes as catalysts for the hydrogenation of nitrile-butadiene copolymers (NBR) was studied under 3.42 MPa hydrogen pressures and at 130 degrees C in monochlorobenzene. On the basis of the correlation of phosphine ligand properties with the catalytic activities of complexes, the complexes studied are divided into three classes: class I (bulky monophosphines with Tolman's cone angle greater than or equal to 160 degrees) OsHCl(CO)(O-2)(PR3)(2) (PR3 = (PPr3)-Pr-1, PCy3, PCy2Ph); class LI (small monophosphines) OsHCl(CO)(PR3)(3) (PR3 = PPh3, P(m-C6H4Me)(3)); class III (diphosphines) OsHCl(CO)(PPh3)(dppp) (dppp = Ph2P(CH2)(3)PPh2). In general, the activity of these complexes decreases as follows: class I > class LI > class III. This trend is mainly attributed to the ease of dissociation of a ligand from an 18-electron complex to generate a 16-electron species (O-2 > PR3 > dppp) in the catalytic process. In the case of complexes of class I as catalysts, their activities increase in the order: PCy2Ph << (PPr3)-Pr-1 < PCy3. While this activity trend does not appear to correlate with the steric effect based on Tolman's cone angles, it is in good agreement with the electronic effect, which is evaluated based on the infrared nu(CO) values of these complexes. The catalytic activity of there complexes increases with the decrease of nu(CO) value, which is consistent with the increase of the donor power of phosphine ligands. This indicates that the activity of these complexes are predominately dependent on the electronic properties of phosphines and, in conjunction with the kinetic isotope effect, the rare determining step of the catalytic process would be an H-2 bond breaking related process or an olefin insertion into an Os-H bond. With complexes of classes II and III, a complex containing a bulky, strong a-donor and weak pi-acceptor phosphine is a good catalyst whereas that containing a chelating phosphine ligand would he a poor catalyst. (C) 2000 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1381-1169(99)00287-3
• 作为产物：
  描述：

  苯基二环己基膦 、 氯化锇三水合物 以 乙二醇甲醚 为溶剂， 以57%的产率得到
  参考文献：
  名称：

  Catalytic hydrogenation of acrylonitrile–butadiene copolymers by a series of osmium complexes

  摘要：

  The activity of a series of osmium complexes as catalysts for the hydrogenation of nitrile-butadiene copolymers (NBR) was studied under 3.42 MPa hydrogen pressures and at 130 degrees C in monochlorobenzene. On the basis of the correlation of phosphine ligand properties with the catalytic activities of complexes, the complexes studied are divided into three classes: class I (bulky monophosphines with Tolman's cone angle greater than or equal to 160 degrees) OsHCl(CO)(O-2)(PR3)(2) (PR3 = (PPr3)-Pr-1, PCy3, PCy2Ph); class LI (small monophosphines) OsHCl(CO)(PR3)(3) (PR3 = PPh3, P(m-C6H4Me)(3)); class III (diphosphines) OsHCl(CO)(PPh3)(dppp) (dppp = Ph2P(CH2)(3)PPh2). In general, the activity of these complexes decreases as follows: class I > class LI > class III. This trend is mainly attributed to the ease of dissociation of a ligand from an 18-electron complex to generate a 16-electron species (O-2 > PR3 > dppp) in the catalytic process. In the case of complexes of class I as catalysts, their activities increase in the order: PCy2Ph << (PPr3)-Pr-1 < PCy3. While this activity trend does not appear to correlate with the steric effect based on Tolman's cone angles, it is in good agreement with the electronic effect, which is evaluated based on the infrared nu(CO) values of these complexes. The catalytic activity of there complexes increases with the decrease of nu(CO) value, which is consistent with the increase of the donor power of phosphine ligands. This indicates that the activity of these complexes are predominately dependent on the electronic properties of phosphines and, in conjunction with the kinetic isotope effect, the rare determining step of the catalytic process would be an H-2 bond breaking related process or an olefin insertion into an Os-H bond. With complexes of classes II and III, a complex containing a bulky, strong a-donor and weak pi-acceptor phosphine is a good catalyst whereas that containing a chelating phosphine ligand would he a poor catalyst. (C) 2000 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1381-1169(99)00287-3