Direct and quantitative characterization of dynamic ligand exchange between coordination-driven self-assembled supramolecular polygons.
The direct observation of dynamic ligand exchange between Pt-N coordination-driven self-assembled supramolecular polygons (triangles and rectangles) has been achieved using stable (1)H/(2)D isotope labeling of the pyridyl donors and electrospray ionization mass spectrometry combined with NMR spectroscopy. Both the thermodynamic and kinetic aspects of such exchange processes have been established on the basis of quantitative mass spectral results. Further investigation has shown that the exchange is highly dependent on experimental conditions such as temperature, solvent, and the counteranions.
Zheng
Yao-Rong
YR
Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, USA. Zheng@chem.utah.edu
Stang
Peter J
PJ
D031541:Fluorescence Resonance Energy Transfer; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D021241:Spectrometry, Mass, Electrospray Ionization; D013816:Thermodynamics
D008024:Ligands