Salt effects and kinetic isotope effects interconnected. Evidence for the involvement of chloride ion in the C–H bond breaking in aqueous solution?

Abstract

An unusual change of the primary kinetic isotope effect in the formation of hydroxamic acid from nitrosobenzene and formaldehyde in mixed solvents on addition of very small quantities of salts and at higher salt concentration in water was observed and interpreted in terms of ion pairing and hydrogen bonding phenomena in the reaction.

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