title: Hydrogen tunneling in protonolysis of platinum(II) and palladium(II) methyl complexes: mechanistic implications.
abstract: Platinum(II) and palladium(II) complexes are well-known to catalyze the partial oxidation of alkanes. Herein, we present experimental evidence that tunneling occurs in the protonolysis of M(II)-CH(3) (M = Pt, Pd) model systems. We propose that there may be a connection between the observation of tunneling and a protonolysis mechanism involving direct protonation of the M-C bond and that tunneling may also be expected for electrophilic C-H activation of methane by Pt(II) and Pd(II) that proceeds via direct proton loss from a sigma complex.
authors.affiliation: Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: John E
authors.initials: JE
authors.lastname: Bercaw
authors.forename: George S
authors.initials: GS
authors.lastname: Chen
authors.forename: Jay A
authors.initials: JA
authors.lastname: Labinger
authors.forename: Bo-Lin
authors.initials: BL
authors.lastname: Lin