Transition Metal Chemistry

, Volume 10, Issue 5, pp 167–171 | Cite as

Kinetic and spectroscopic studies of the substitution reactions of [Rh(acac)(CO)2] with triphenylphosphite

  • R. van Eldik
  • S. Aygen
  • H. Kelm
  • A. M. Trzeciak
  • J. J. Ziólkowski
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Summary

The substitution reactions of [Rh(acac)(CO)2] with triphenylphosphite (P) to produce [Rh(acac)(CO)P], [Rh(acac)P2] and [PhP3P′], were studied in detail using spectroscopic (n.m.r., i.r. and u.v.-vis.) and kinetic techniques. The kinetic data demonstrate that the first substitution process is very fast and followed by the rate-determining second step. The subsequent loss of acac is relatively slow. The activation enthalpy for the formation of [Rh(acac)P2] is extremely low and possibly accounts for the catalytic nature of this system in hydrogenation and hydroformylation reactions.

Keywords

Hydrogenation Physical Chemistry Enthalpy Inorganic Chemistry Catalysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© VCH Verlagsgesellschaft mbH 1985

Authors and Affiliations

  • R. van Eldik
    • 1
  • S. Aygen
    • 1
  • H. Kelm
    • 1
  • A. M. Trzeciak
    • 2
  • J. J. Ziólkowski
    • 2
  1. 1.Institute for Physical ChemistryUniversity of FrankfurtFrankfurt/MainFRG
  2. 2.Institute of ChemistryUniversity of WroclawWroclawPoland

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