Nucleophilic activity of peroxyhydrocarbonate and peroxocarbonate ions relative to 4-nitrophenyl diethyl phosphonate

Peroxocarbonate ions HCO4− and CO42−, which are formed in the H2O2/NH4HCO3/HO− system, react with 4-nitrophenyl diethyl phosphonate (I) through a nucleophilic mechanism with rate constants \( k_{HCO_4^ - } = 0.008 \) and \( k_{CO_4^{2 - } } = 0.13 L/mol \cdot s \) . Comparison of these constants with the corresponding constants of other inorganic anions in their reaction with I in the framework of the Bronsted equation indicates that HCO4− and CO42− are typical α-nucleophiles.