Self-assembly with postmodification: kinetically stabilized metalla-supramolecular rectangles.
Interaction of a predesigned molecular "clip" (4) with rigid dipyridyl bridging ligands, in acetone/water mixtures, leads to the formation of molecular rectangles (5-8) in 92-97% isolated yields via spontaneous self-assembly. Characterization was accomplished with multinuclear NMR and UV-vis spectroscopy, FAB mass spectrometry, and X-ray crystallography. The length of these metallamacrocycles ranges from 2 to 3 nm. Postmodification via non-nucleophilic counterion exchange results in enhanced structural integrity for the assemblies.
Kuehl
C J
CJ
Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA.
Huang
S D
SD
Stang
P J
PJ
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000737:chemistry*; D000873:Anthracenes / Q000737:chemistry*; D007700:Kinetics; D008958:Models, Molecular; D017671:Platinum Compounds / Q000737:chemistry
D000873:Anthracenes; D017671:Platinum Compounds; D015082:2,2'-Dipyridyl