Simultaneous endo and exo Complex Formation of Pyridine[4]arene Dimers with Neutral and Anionic Guests.
The formation of complexes between hexafluorophosphate (PF6- ) and tetraisobutyloctahydroxypyridine[4]arene has been thoroughly studied in the gas phase (ESI-QTOF-MS, IM-MS, DFT calculations), in the solid state (X-ray crystallography), and in chloroform solution (1 H, 19 F, and DOSY NMR spectroscopy). In all states of matter, simultaneous endo complexation of solvent molecules and exo complexation of a PF6- anion within a pyridine[4]arene dimer was observed. While similar ternary complexes are often observed in the solid state, this is a unique example of such behavior in the gas phase.
['Kiesilä|Anniina|A|0000-0002-2952-2377', 'Kivijärvi|Lauri|L|', 'Beyeh|Ngong Kodiah|NK|0000-0003-3935-1812', 'Moilanen|Jani O|JO|', 'Groessl|Michael|M|', 'Rothe|Tatiana|T|', 'Götz|Sven|S|', 'Topić|Filip|F|0000-0003-3811-6036', 'Rissanen|Kari|K|0000-0002-7282-8419', 'Lützen|Arne|A|', 'Kalenius|Elina|E|0000-0001-8038-1314']
pyridine[4]arenes anion binding ion mobility mass spectrometry molecular recognition resorcinarenes