Facilitated Ion‐Transfer of Sodium Cation by (Anthraquinone‐1‐yloxy) methane‐15‐crown‐5 Across the Water/1,2‐Dichloroethane Microinterface | Zendy

Han Xiaojun | Zendy; Zhang Zhiquan | Zendy; Dong Shaojun | Zendy; Wang Erkang | Zendy

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Facilitated Ion‐Transfer of Sodium Cation by (Anthraquinone‐1‐yloxy) methane‐15‐crown‐5 Across the Water/1,2‐Dichloroethane Microinterface

Author(s) -

Han Xiaojun,

Zhang Zhiquan,

Dong Shaojun,

Wang Erkang

Publication year - 2004

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.200302901

Subject(s) - chemistry , alkali metal , anthraquinone , stoichiometry , sodium , methane , dissociation (chemistry) , inorganic chemistry , dissociation constant , dichloroethane , analytical chemistry (journal) , organic chemistry , solvent , biochemistry , receptor

The transfer of sodium cation facilitated by (anthraquinone‐1‐yloxy) methane‐15‐crown‐5 (L) has been investigated at the water/1,2‐dichloroethane microinterface supported at the tip of a micropipette. The diffusion coefficient of (anthraquinone‐1‐yloxy) methane‐15‐crown‐5 obtained was (3.42±0.20)×10 −6 cm 2 s −1 . The steady‐state voltammograms were observed for forward and backward scans due to sodium ion transfer facilitated by L with 1 : 1 stoichiometry. The mechanism corresponded to an interfacial complexation (TIC) and interfacial dissociation (TID) process. The association constant was calculated to be log β o =11.08±0.03 in the DCE phase. The association constant of other alkali metals (Li + , K + , Rb + ) were also obtained.

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