Hydrogen Tunneling in Protonolysis of Platinum(II) and Palladium(II) Methyl Complexes: Mechanistic Implications
作者:John E. Bercaw、George S. Chen、Jay A. Labinger、Bo-Lin Lin
DOI:10.1021/ja807427d
日期:2008.12.31
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
众所周知,铂 (II) 和钯 (II) 配合物可催化烷烃的部分氧化。在这里,我们提出了隧道发生在 M(II)-CH(3) (M = Pt, Pd) 模型系统的质子分解中的实验证据。我们提出,隧道效应的观察与涉及 MC 键直接质子化的质子分解机制之间可能存在联系,并且通过 Pt(II) 和 Pd(II) 进行的甲烷的亲电 CH 活化也可以预期隧道效应。 sigma 复合体的直接质子损失。