A “giant” kinetic isotope effect (KIE=346) has been observed for the generation of hydrogen from the hydrolysis of silanes catalyzed by a silyl-iridium(III) complex. This and other experimental evidence together with theoretical calculations have been used to demonstrate the participation of hydrogen quantum tunneling in this catalytic process.
已观察到“巨大”的动力学同位素效应 (KIE=346) 用于由甲
硅烷基-
铱 (III) 配合物催化的
硅烷水解产生
氢气。这个和其他实验证据与理论计算一起被用来证明氢量子隧穿在这个催化过程中的参与。