Self-assembly of a [2]pseudorota[3]catenane in water.
J Am Chem Soc
; 134(41): 17007-10, 2012 Oct 17.
Article
em En
| MEDLINE
| ID: mdl-22998143
ABSTRACT
A donor-acceptor [3]catenane incorporating two cyclobis(paraquat-p-phenylene) rings linked together by a dinaphtho[50]crown-14 macrocycle possesses a π-electron-deficient pocket. Contrary to expectation, negligible binding of a hexaethylene glycol chain interrupted in its midriff by a π-electron-rich 1,5-dioxynaphthalene unit was observed in acetonitrile. However, a fortuitous solid-state superstructure of the expected 11 complex revealed its inability to embrace any stabilizing [C-H···O] interactions between the clearly unwelcome guest and the host reluctantly accommodating it. By contrast, in aqueous solution, the 11 complex becomes very stable thanks to the intervention of hydrophobic bonding.
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MEDLINE
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Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos