We report experimental and computational evidence that cationic N-heterocyclic carbene gold complexes with electron-rich cyclopropanes rearrange to produce Fischer gold carbene complexes in the gas phase, in analogy to long-known condensed-phase rearrangements of protonated cyclopropanes. Our results help to generalize the relationship between Lewis-acidic metal complexes of cyclopropanes, metallacyclobutanes and metal carbenes.
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Batiste et al. (2010) studied this question.
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