L(H2O)RhOOH2+ --> L(H2O)CrOOH2+ + L(H2O)RhOO2+. All of the measured rate constants fall in a narrow range, 17-135 M-1 s-1. These values are about 2.5-3.0 times smaller in D2O, where the hydroperoxo hydrogen is replaced by deuterium, and coordinated molecules of water by D2O. The failure of the back reaction to take place in the available concentration range places the O-H bond dissociation energy in
超氧
铬(III)络合物L(
H2O)CrOO2 +(L =( )4和
1,4,8,11-四氮杂环十四烷)在明显的氢原子转移过程中
氧化铑和
钴的氢过氧络合物,即L( ) CrOO2 + + L( )RhOOH2 +-> L( )CrOOH2 + + L( )RhOO2 +。所有测得的速率常数都在一个狭窄的范围内,即17-135 M-1 s-1。这些值在D2O中小约2.5-3.0倍,其中氢过氧氢被
氘取代,
水配位分子被D2O取代。在可用浓度范围内无法发生逆反应,RhOO-H2 +中的OH键解离能为或两种反应的驱动力为80 kJ / mol)。
铬离子CrIVaqO2 +将L( )RhOOH2 +和
钴类似物氧化为相应的超氧配合物。速率常数大约比用CraqOO2 +氧化的速率常数大102倍。CrIVaqO2 +对叔-BuOOH的氧化具有k = 160 M-1 s-1,并表现出同位素效应kBuOOH