Reactions of the mixed-metal alkyne-bridged complexes [(η5-C5H5)(OC)2M{μ-C 2(CO2Me)2}Co(CO)3] (M=Mo or W) with Ph2PCCtBu1

John E. Davies, Martin J. Mays, Paul R. Raithby, Koshala Sarveswaran, Gregory P. Shields

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20 Citations (Scopus)


Reaction of the mixed-metal alkyne-bridged complexes [(η5-C5H5)(OC)2M{μ-C 2(CO2Me)2}Co(CO)3] (M=Mo or W) with Ph2PCCtBu in refluxing toluene gives the complexes [(η5-C5H5)(OC)2M{μ- tBuCCC(CO2Me)=C(CO2Me)PPh 2}Co(CO)2], [(η5-C5H5)(OC)2M{μ-C 2(CO2Me)2}Co(CO)2(Ph 2PCCtBu)] (M=Mo or W) and [(η5-C5H5)(OC)W{μ-C(CO 2Me)=C(CO2Me)CCtBu}(μ-PPh 2)Co(CO)2]. The structures of the two complexes, [(η5-C5H5)(OC)2Mo{μ- tBuCCC(CO2Me)=C(CO2Me)PPh 2}Co(CO)2] and [(η5-C5H5)(OC)W{μ-C(CO 2Me)=C(CO2Me)CCtBu}(μ-PPh 2)Co(CO)2], have been determined by X-ray analysis. Possible reaction pathways for the formation of the new complexes are proposed and discussed.

Original languageEnglish
Pages (from-to)180-188
Number of pages9
JournalJournal of Organometallic Chemistry
Issue number1-2
Publication statusPublished - 31 Jan 1999


  • Alkyne bridged complexes
  • Cobalt
  • Mixed metal complexes
  • Molybdenum
  • Phosphido complexes
  • Tungsten

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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