A New Cryptand: Synthesis and Complexation with Paraquat
摘要:
[GRAPHICS]Inspired by folded, nonpseudorotaxane complexes of bis(m-phenylene) 32-crown-10 systems, we synthesized a new bicyclic crown ether containing two 1,3,5-phenylene units linked by three tetra(ethyleneoxy) units. The new cryptand forms a "pseudorotaxane-like" inclusion complex with N,N'-dimethyl-4,4'-bipyridinium bis(hexafluorophosphate) with association constant K-a = 6.1 x 10(4) M-1, 100-fold greater than that of an analogous simple crown ether.
A New Cryptand: Synthesis and Complexation with Paraquat
摘要:
[GRAPHICS]Inspired by folded, nonpseudorotaxane complexes of bis(m-phenylene) 32-crown-10 systems, we synthesized a new bicyclic crown ether containing two 1,3,5-phenylene units linked by three tetra(ethyleneoxy) units. The new cryptand forms a "pseudorotaxane-like" inclusion complex with N,N'-dimethyl-4,4'-bipyridinium bis(hexafluorophosphate) with association constant K-a = 6.1 x 10(4) M-1, 100-fold greater than that of an analogous simple crown ether.