Confirmation of the pentadienyl/alkyne [5 + 2] cycloaddition reactivity of the Cp*Co(η5-1,2,5-trimethylpentadienyl)+ complex

The [5 + 2] cycloaddition reactivity of the Cp*Co(η5-1,2,5-trimethylpentadienyl)+ complex with ethyne has been demonstrated, providing significant support for our computationally determined structure/reactivity proposal.