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Russian Chemical Bulletin

, Volume 44, Issue 5, pp 836–839 | Cite as

Formation of anionic carbonylrhodium complexes from Wilkinson's complex under conditions of hydroformylation of formaldehyde

  • N. N. Ezhova
  • G. A. Korneeva
  • V. I. Kurkin
  • M. P. Filatova
  • E. V. Slivinsky
Physical Chemistry

Abstract

The compositions and the dynamics of transformations of carbonylrhodium complexes formed from Wilkinson's complex, RhCl(PPh3)3, dissolved in mesitylene—N,N-dimethylacetamide (DMAA) mixtures in which the DMAA concentration varied from 0 to 100 %, in an atmosphere of synthesis gas\(p_{{\text{CO + H}}_{\text{2}} } \) = 6 MPa,T=373 K) were investigatedin situ by IR spectroscopy. The anion complexes, [Rh(CO)2(PPh3) x (DMAA) y ] (x=1, 2;y=1, 0) and [Rh(CO)4], which are the centers of formaldehyde hydroformylation, are produced in noticeable quantities when 100 % DMAA is used as a solvent. Separate steps of the formation of anionic complexes from RhCl(PPh3)3 have been identified. Under the conditions of hydroformylation of formaldehyde, CH2O participates in the formation of the anionic complexes, along with DMAA.

Key words

formaldehyde, hydroformylation Wilkinson's complex, anionic rhodium complexes N,N-dimethylacetamide in situ IR spectroscopy 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • N. N. Ezhova
    • 1
  • G. A. Korneeva
    • 1
  • V. I. Kurkin
    • 1
  • M. P. Filatova
    • 1
  • E. V. Slivinsky
    • 1
  1. 1.A. V. Topchiev Institute of Petrochemical SynthesisRussian Academy of SciencesMoscowRussian Federation

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