Halogenation of A-frame μ-carbido complexes: a diamagnetic rhodium(ii) carbido complex

The reaction of [Rh-2(mu-C)Cl-2(PPh3)(4)] with 1,1 '-bis(diphenylphosphino)ferrocene (dppf) affords the mu-carbido complex [Rh-2(mu-C)Cl-2(mu-dppf)(2)] which reacts with PhICl(2)to provide a diamagnetic dirhodium(ii) carbido complex [Rh-2(mu-C)Cl-4(mu-dppf)(2)].