[Cp*RhCl(PTA)2]X (PTA = 7-phospha-1,3,5-triazaadamantane) undergoes an H/D exchange process between the methyl groups of Cp* and D2O whose rate depends on the coordinating ability of the counterion X−. Kinetic studies and DFT calculations indicate that deuteration involves the abstraction of a Me-Cp* proton by a coordinated OH−; the formation of the latter seems to be facilitated by the presence of the N-basic centers of PTA.
[Cp*RhCl(
PTA)2]X(
PTA = 7-
磷-1,3,5-三氮杂
金刚烷)在 Cp* 的甲基和 D2O 之间经历了一个 H/D 交换过程,其速率取决于反离子 X- 的配位能力。动力学研究和 DFT 计算表明,
氘化涉及配位 OH- 对 Me-Cp* 质子的抽取;
PTA 的 N 碱中心的存在似乎促进了后者的形成。