On the Mechanism of Transfer of Sodium Ion across the Nitrobenzene/Water Interface Facilitated by Dibenzo-18-crown-6

Abstract

The question of the site of ionophore–ion complex formation, whether it is in the organic phase (EC), in the aqueous phase (CE), or at the interface (E), in the transfer facilitated by dibenzo-18-crown-6 of sodium ion across the nitrobenzene/water interface was studied by kinetic analysis of the ion transfer using a.c. polarographic method. The results indicate that the interface reaction mechanism (E) is the most probable of the three.

Charge Transfer across Liquid—Liquid Interfaces

“…Senda et al 96 studied the transfer of sodium at the water-nitrobenzene interface facilitated by dibenzo-18-crown-6 in order to elucidate the mechanism of the transfer, and concluded that the transfer occured by a TIC mechanism. Recently, Shao 73 revisited this system at the water-1,2-dichloroethane interface.…”

Electrochemical Study of Solvent Extraction Based on Ion Transfer at the Aqueous/Organic Solution Interface

“…Vanýsek et al [52] demonstrated that the K + transfer facilitated by valinomycin from W to NB takes place both through complex formation in NB or in parallel at the interface. Lin and Freiser [53] reported that the mechanism of K + transfer facilitated by DB18C6 at the W/DCE interface depended on the concentration of K + in W. Kakutani et al [54] studied Na + transfer facilitated by DB18C6 by means of a.c. polarography at the W/NB interface, and concluded that complex formation at the interface was the most probable mechanism.…”

Electrochemistry at liquid/liquid interfaces: methodology and potential applications

“…Depending on the different concentration ratios, different types of ion transfer reactions can be envisaged [33,34].…”