1.
J Org Chem
; 73(14): 5570-3, 2008 Jul 18.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18549272
RESUMO
The pseudorotaxane complex of the new hydroxymethyl cryptand 3 with N,N'-dimethyl-4,4'-bipyridinium bis(hexafluorophosphate), PQ(PF6)2, has an association constant of 2.0(+/-0.3) x 10(4) M(-1). In the crystal structure of 3 x PQ(PF6)2 one of the bonding elements appears to be an aromatic edge-to-face interaction of a paraquat beta-proton with the hydroquinone moiety; this is the first time this interaction has been reported between a cryptand and paraquat.