Interaction of hydroperoxopalladium complexes, (TpR)(py)Pd-OOH, with hydroxo-nickel and -cobalt complexes, [(µ-OH)(MTpR)]2(M = Ni, Co), leading to oxidative dehydrogenation of the saturated hydrocarbyl moiety in the ancillary ligand (TpiPr2)

Treatment of hydroperoxopalladium complexes, (TpR)(py)Pd-OOH, with hydroxonickel complexes, [((mu)-OH)NiTpRʹ]2, when either TpR or TpRʹ is TpiPr2, results in dehydrogenation of an isopropyl group of the TpiPr2 ligand to give heterobimetallic di-(mu)-hydroxo complexes bearing the 3-isopropenyl-substituted Tp ligand [HB(pziPr2)2(pz3-isopropenyl-5-iPr). Similar dehydrogenation is observed for the reaction with the hydroxocobalt complex bearing the TpiPr2 ligand. The dehydrogenated products are characterized by spectroscopic and crystallographic methods and a mechanism involving a heterobimetallic (mu)-peroxo intermediate formed via dehydrative condensation has been proposed for the oxidative dehydrogenation.