| 18549272 |
Pederson AM, Vetor RC, Rouser MA, Huang F, Slebodnick C, Schoonover DV, Gibson HW: A new functional bis (m-phenylene)-32-crown-10-based cryptand host for paraquats. J Org Chem. 2008 Jul 18;73(14):5570-3. Epub 2008 Jun 13.
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. |
32(0,1,1,2) |