Peroxyhydrolysis of 4-nitrophenyl diethyl phosphate in micellar systems based on imidazolium gemini surfactants

The nucleophilic reactivity of HO – and HOO – ions in the presence of imidazole gemini surfactants toward 4-nitrophenyl diethyl phosphate (NPDEP) was studied. It was shown that in the micelles of these detergents, as in water, an α effect is realized for the hydroperoxide ion. Its magnitude, charact...

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Bibliographic Details
Published in:Theoretical and experimental chemistry 2012-05, Vol.48 (2), p.122-128
Main Authors: Sadovskii, Yu. S., Solomoichenko, T. N., Turovskaya, M. K., Kapitanov, I. V., Piskunova, Zh. P., Kostrikin, M. L., Prokop’eva, T. M., Popov, A. F.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Detergents, Synthetic
Hydroxides
Phosphates
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Summary:The nucleophilic reactivity of HO – and HOO – ions in the presence of imidazole gemini surfactants toward 4-nitrophenyl diethyl phosphate (NPDEP) was studied. It was shown that in the micelles of these detergents, as in water, an α effect is realized for the hydroperoxide ion. Its magnitude, characterized by the ratio of the second-order rate constants k 2(HOO-) m / k 2(HO-) m for the reaction with NPDEP in the micellar pseudophase, reaches ~100. Comparable micellar effects are observed at concentrations of the gemini surfactants not less than an order of magnitude lower than in the case of their monomeric analogs.
ISSN:0040-5760
1573-935X
DOI:10.1007/s11237-012-9249-7