MOLECULAR RECOGNITION STUDY ON SUPRAMOLECULAR SYSTEM (XVII) - INCLUSION COMPLEXATION OF SOME BETA-CYCLODEXTRIN DERIVATIVES CONTAINING ORGANO-SELENIUM WITH ALIPHATIC-ALCOHOLS
Y. Liu et al., MOLECULAR RECOGNITION STUDY ON SUPRAMOLECULAR SYSTEM (XVII) - INCLUSION COMPLEXATION OF SOME BETA-CYCLODEXTRIN DERIVATIVES CONTAINING ORGANO-SELENIUM WITH ALIPHATIC-ALCOHOLS, Gaodeng xuexiao huaxue xuebao, 19(9), 1998, pp. 1440-1442
The spectrophotometric titrations have been performed at 298, 15 K in
buffered aqueous solution (pH = 7. 20) to give the stability constants
(lgK(5)) for the supramolecular system formed by mono-[ 6-phenylseleno
)-6-deoxy ]-beta-cyclodextrin (1) nono-[ 6-( p-chlorophenylseleno) -6-
deoxy ]-beta-cyclodextrin(2), mono-[6-( naphthylseleno)-6-deoxy]-beta-
cyclodextrin(3), and no-[6-(benzylseleno)-6-deoxy]-beta-cyclodextrin(4
) with a series of aliphatic alcohols, The molecular binding-ability a
nd selectivity for aliphatic alcohols of modified beta-cyclodextrins(1
-4) are discussed from the size-fit, geometrical complement, van der W
aals force, hydrogen bonding, and hydrophobic interactions relationshi
ps between the host cavity and the guest molecule, The results investi
gated indicate that the benzylseleno moiety of beta-cyclodextrin deriv
ative(4) as a probe for spectrometry can enhance not only the molecula
r binding-ability but also the molecular recognizing-ability.