A new functional bis(m-phenylene)-32-crown-10-based cryptand host for paraquats.
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.
Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0212, USA.
Adam M-P
AM
Pederson
Ryan C
RC
Vetor
Mason A
MA
Rouser
Feihe
F
Huang
Carla
C
Slebodnick
Daniel V
DV
Schoonover
Harry W
HW
Gibson