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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
Full Text	PDF

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