高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (4): 340.

• 研究论文 • 上一篇    下一篇

铑膦络合催化剂活化过程的“原位”红外研究

潘伟雄, 刘殿求   

  1. 清华大学化学化工系
  • 收稿日期:1984-12-30 出版日期:1986-04-24 发布日期:1986-04-24

“In Situ” Infrared Study on Activation Process of Rhodium Phosphine Complex

Fan Weixiong, Liu Dianqiu   

  1. Dept.of Chem.& Chem. Eng., Tsinghhua Unitersity, Beijing
  • Received:1984-12-30 Online:1986-04-24 Published:1986-04-24

摘要: 本文研究了正丁醛溶剂中Rh(acac)(CO)(Pph3)在不同条件下的活化过程及各种络合物间的转化关系,在反应条件下检出了活性组分,并发现活性组分会部分歧化为三羰基物与单羰基物。实验中检测到一些多羰基化合物,并发现体系生成的二聚物可分成无桥联与有桥联羰基两种络合物。

Abstract: In butyl aldehyde solvent the activation prcccss of catalyst precusor Rh(acac)(CO)(Pph3) under diffrent conditions and the transformation of various complexhave been studied. The active specks HRh(CO2)(Fph3)2 can be detected under reaction conditions, and its partial disproporlionation to HRh(CO2)3(Pph3) and HRh-(CO)(Pph3)3 has been discovered. The results show that the dimer [Rh (CO)2-(Pph3)2]2 in the system may fall into two species Rh3(CO)4(Pph3)4 and (Pph3)3-(CO)Rh(CO)2Rh(CO)(Pph3)3 the latter is formed in higher COpressure.

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