1H NMR study of the reversible cis / trans isomerization of {(μ-CH2)(μ-CO)[η5-C5H5Fe(CO)]2}

Maria I Altbach, César A. Muedas, Richard P. Korswagen, Manfred L. Ziegler

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The cis / trans isomerization of the bridging methylene complex {(μ-CH2)(μ-CO)[η5-C5H5-Fe(CO)]2} was studied in solution by 1H NMR spectrometry, using solvents with different polarities (acetone-d6, chloroform-d1 and benzene-d6). Equilibrium constants and rate constants for the forward and reverse steps were measured between 278 and 323 k. Both reactions show first-order kinetics. A possible mechanism for the isomerization is proposed, involving the breaking of a FeFe bond in the rate-determining step.

Original languageEnglish (US)
Pages (from-to)375-383
Number of pages9
JournalJournal of Organometallic Chemistry
Volume306
Issue number3
DOIs
StatePublished - Jun 3 1986
Externally publishedYes

Fingerprint

Carbon Monoxide
Isomerization
isomerization
Nuclear magnetic resonance
nuclear magnetic resonance
Equilibrium constants
Chloroform
Chlorine compounds
Acetone
Benzene
chloroform
methylene
Spectrometry
acetone
Rate constants
Spectrum Analysis
polarity
benzene
Kinetics
kinetics

ASJC Scopus subject areas

  • Biochemistry
  • Chemical Engineering (miscellaneous)
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Science (miscellaneous)
  • Materials Chemistry

Cite this

1H NMR study of the reversible cis / trans isomerization of {(μ-CH2)(μ-CO)[η5-C5H5Fe(CO)]2}. / Altbach, Maria I; Muedas, César A.; Korswagen, Richard P.; Ziegler, Manfred L.

In: Journal of Organometallic Chemistry, Vol. 306, No. 3, 03.06.1986, p. 375-383.

Research output: Contribution to journalArticle

Altbach, Maria I ; Muedas, César A. ; Korswagen, Richard P. ; Ziegler, Manfred L. / 1H NMR study of the reversible cis / trans isomerization of {(μ-CH2)(μ-CO)[η5-C5H5Fe(CO)]2}. In: Journal of Organometallic Chemistry. 1986 ; Vol. 306, No. 3. pp. 375-383.
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