Self-organization of spheroidal molecular assemblies in polar solvents
[reaction: see text] We report a number of 1:1 noncovalent complexes composed of a symmetrical trisphosphonate and various symmetrical trisammonium or trisamidinium compounds. The spheroidal complexes show high thermodynamic stability, with association constants Ka reaching 10(6) M(-1) in methanol and in some cases even exceeding 10(3) M(-1) in water. The observed Ka values correlate well with the different degree of preorganization of the complexation partners.
Grawe
T
Institut fur Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universitat Dusseldorf, Germany.
Schrader
T
Gurrath
M
Kraft
A
Osterod
F