Reaction of RhCp*(L)(CH(3))(2)(L = pyridine, dmso) with equimolar amounts of GaCp* at 60 degrees C quantitatively leads to the zwitterionic species [Cp*Rh(CpMe(4)GaMe(3))]. [Cp*Rh(CH(3))(2)(GaCp*)] could be isolated and identified as an intermediate in this reaction.