MOLECULAR DESIGN OF HARD-SOFT DITOPIC METAL-BINDING SITES ON A CALIX[4]ARENE PLATFORM

被引:23
作者
KOH, KN [1 ]
IMADA, T [1 ]
NAGASAKI, T [1 ]
SHINKAI, S [1 ]
机构
[1] KYUSHU UNIV,FAC ENGN,DEPT CHEM SCI & TECHNOL,FUKUOKA 812,JAPAN
关键词
D O I
10.1016/S0040-4039(00)73138-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Ditopic ''hard''-''soft'' metal binding-sites composed of four EtS(CH2)(n)NHCOCH2O-groups were designed for the first time on a calix[4]arene platform. N = 2 is too short to form a bimetallic complex whereas n = 6 is long enough to accept two metal ions. H-1 NMR spectral studies established that although Cd2+ bound to the ''soft'' binding-site excludes Naf out of the ''hard'' binding-site, Ag+ can be co-existent with Na+ in the ionophoric cavity.
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页码:4157 / 4160
页数:4
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