Host—guest complexation of 6-deoxy-6-(1-pyridinio) derivatives of α-cyclodextrin (cyclomaltohexaose) with inorganic anions in aqueous solution
作者:Yoshihisa Matsui、Masahiko Fujie、Hiroshi Sakate
DOI:10.1016/0008-6215(89)85168-7
日期:1989.10
Abstract The anions I −1 , SCN − , and Br − formed 1:1 charge-transfer complexes with the HCO 3 − salts of bis-, tris-, and hexakis-[6-deoxy-6-(1-pyridinio)]-α-cyclodextrins in aqueoussolution. Increase in the number of the pyridinio groups resulted in a remarkable increase in the binding constant, K a . A maximum K a value of 9 × 10 5 mol −1 .dm 3 was observed for the complex of the hexapyridinio