Bonding in some Novel Organometallic Complexes of the First and Second Row Transition Metal Ions

  • M. R. Churchill
  • R. Mason
Conference paper


X-ray crystallographic analyses of a number of organometallic molecules have indicated that bonding of the cyclic ligands to transition metal ions differs considerably from that in such molecules as the bis π -cyclopentadienyl metal complexes. Thus in π-cyclopentadienyl-1-phenylcyclopentadiene — cobalt (1), cobalt (2, 3) tetrakis(trifluoromethyl) cyclopentadienone iron tricarbonyl (3), π-cyclopentadienyl hexakis(trifluoromethyl) benzenerhodium (4) and tricarbonyloctafluorocyclohexa-1, 3-diene iron (5), the essentially planar structure of the substituted diene, dienone or benzene ligand is considerably modified on bonding to the metal ion. The non-planarity of the ligand varies from some 20°in the case of the cyclopentadienone complex to approximately 47° in the benzene and hexa 1–3 diene structures.


Nuclear Magnetic Resonance Nuclear Magnetic Resonance Spectrum Crystallographic Analysis Molecular Orbital Theory Tricarbonyl Complex 
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Copyright information

© Springer-Verlag Wien 1964

Authors and Affiliations

  • M. R. Churchill
    • 1
  • R. Mason
    • 1
  1. 1.Department of ChemistryUniversity of SheffieldEngland, UK

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