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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 5
BKCSDE 27(5)
May 20, 2006 

 
Title
Macrocyclic Isomers with S2O-Donor Set as Silver(I) Ionophores
Author
Sung Bae Park, Il Yoon, Joobeom Seo, Hyun Jee Kim, Jae Sang Kim, Shim Sung Lee*
Keywords
Isomeric S2O macrocycles, Solvent extraction, Ag(I)-ISE, NMR, Sandwich-type silver(I) complex
Abstract
S2O-donor macrocyclic isomers incorporating a xylyl group in o- (L1), m- (L2) and p-positions (L3) extract no metal ions except silver(I) from aqueous to chloroform phase. And the magnitudes of %Ex for silver(I) are in the order of L1 > L2 > L3. Taking this result into account, L1-L3 were utilized as membrane active components to prepare potentiometric silver(I)-selective electrodes. The proposed macrocycles-based electrodes E1 (L1), E2 (L2) and E3 (L3) exhibited comparable results which show considerable selectivity toward silver(I) over alkali, alkali earth and other transition metal ions. Comparative NMR study on L1-L3 and their complexes with silver(I) in solution was also accomplished. In addition, a unique sandwich-type complex [Ag(L1)2]ClO4 was prepared from the assembly reaction of L1 with AgClO4and structurally characterized by an X-ray diffraction analysis.
Page
713 - 717
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