Synthesis of a vinylphosphine substituted cobalt lactonyl complex and insertion of CO into the lactonyl ring: Crystal structures of [Co{PPh2CPh=CPhCOC(O)CPhCPh}(CO)2] and [Co{PPh2CPh=CPhCC(O)OC(O)CPhCPh}(CO)2]

Andrew J. Edwards, Martin J. Mays, Paul R. Raithby, Gregory A. Solan

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Two new cobalt complexes, [Co{PPh2C-Ph=CPhCOCC(O)CPhCPh}(CO)2] (4) and [Co{PPh2-CPh=CPhCC(O)OC(O)CPhCPh}(CO)2] (5), have been synthesized and spectroscopically and structurally characterized. Complex 4 is the major product of the condensation reaction of [Co2(μ-PPh2)2(CO)6] with diphenylacetylene under carbon monoxide pressure, while 5 is obtained from the reaction of 4 with sodium naphthalenide followed by [(η5-C5H5)Fe(CO)2Cl]. The X-ray structures of 4 and 5 reveal the cobalt atoms to be respectively chelated by lactonyl and cyclic anhydride substituted vinylphosphines, so that 5 is formally derived from 4 by insertion of CO into the lactonyl ring.

Original languageEnglish
Pages (from-to)4085-4088
Number of pages4
Issue number19
Publication statusPublished - 17 Sep 1996

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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