Incorporation of a flexible, pyridine-functionalized Diaza-crown ether into discrete supramolecules via coordination-driven self-assembly.
A flexible, pyridine-functionalized diaza-crown ether was self-assembled into discrete supramolecules of differing stoichiometries upon combination with various organoplatinum molecules. They are characterized by electrospray ionization mass spectrometry and (31)P[(1)H] and (1)H NMR. In one case, (1)H-(1)H NOE enhancements of a [1 + 1] assembled structure demonstrate the puckered shape of the macrocyclic ring. Despite its inherent flexibility, the dipyridyl-substituted 18-membered diaza-crown ligand prefers to self-assemble into closed systems when reacted with platinum-containing acceptors.
Chi
Ki-Whan
KW
Department of Chemistry, University of Utah, 315 S. 1400 E. Salt Lake City, Utah 84112, USA.
Addicott
Chris
C
Stang
Peter J
PJ
D043844:Crown Ethers / Q000138:chemical synthesis* / Q000737:chemistry; D008024:Ligands; D046911:Macromolecular Substances; D015394:Molecular Structure; D009944:Organoplatinum Compounds / Q000138:chemical synthesis / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
D043844:Crown Ethers; D008024:Ligands; D046911:Macromolecular Substances; D009944:Organoplatinum Compounds; D011725:Pyridines; D010984:Platinum