Structural and Dynamic Properties of the Pentahapiocyclopentadienylmetal Dicarbonyl Dimers

J. G. Bullitt, F. A. Cotton*, T. J. Marks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

144 Scopus citations


The 100-MHz pmr and infrared spectra between 1700 and 2100 cm-1 of [(h5-C5H5)Fe(CO)2]2 and [(h5-C5H5)Ru(CO)2]2 have been investigated as functions of solvent and temperature. There are four isomers present in solutions of the ruthenium compound: cis bridged (I), trans bridged (III), trans nonbridged (IV), and a polar nonbridged structure (probably V). The thermodynamic and kinetic data measured in nonpolar solvents are consistent with the nonbridged isomers as intermediates in the interconversion of I and III. The approximate kinetic activation parameters for the I III process in the iron compound have been evaluated from the temperature dependence of the pmr spectrum.

Original languageEnglish (US)
Pages (from-to)671-676
Number of pages6
JournalInorganic chemistry
Issue number4
StatePublished - Apr 1 1972

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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