Mass spectrometry of π-complexes of transition metals 38—keto-enol tautomerization of molecular ions of acetyl- and propionyl-ferrocenes in the gas phase†

Fragmentation of the acetyl- and propionyl-ferrocenes under electron impact together with the rupture of C―CO bonds, characteristics of ketones, also includes elimination of water and migration of the OH group to the central metal atom, which is due to keto-enol tautomerization of the acyl group in molecular or fragment ions