New polynuclear carbonyl complexes containing iron with cobalt or rhodium

Abstract

The reaction of Fe₂(CO)₉ with (π-C₅H₅)M(CO)₂](M = Co or Rh) has led to the preparation of five new polynuclear carbonyl complexes containing iron with cobalt or rhodium. The structure of these new ‘mixed-metal’ complexes has been inferred from a combination of i.r., n.m.r., and Mössbauer spectroscopic data and is discussed in relation to the structures of known polynuclear carbonyls such as Fe₃(CO)₁₂ and (π-C₅H₅)₃Rh₃(CO)₃.