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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 6
BKCSDE 23(6)
June 20, 2002 

 
Title
Novel 1,3-Alternate Calix[4]thiacrown Ethers
Author
Wonbo Sim, Jai Young Lee, Jongchul Kwon, Moon Jib Kom, Jong Seung Kim
Keywords
Calix[4]thiacrown ether, Calix[4]-bis-thiacrown, Complexation, Picrate extraction.
Abstract
A series of novel 1,3-alternate calix[4]=mono-thiacrown and -bis-thiacrowns within good yields.The three dimensional 1,3-alternate conformation was confirmed by X-ray crystal structure. From the results of two phase extraction and NMR studies on the lignad -metal complex, one can conclude that the calix[4]thiacrown ethers showed the very high selectivity for silver ion over other metal by an electrostatic interaction between sulfur atom and silver ion and a π-metla complexation
Page
879 - 883
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