Katharina Reichenbcher, Heike I. Sss, H. Stoeckli-Evans
Mar 2, 2004
Citations
0
Influential Citations
24
Citations
Journal
New Journal of Chemistry
Abstract
Two perfluorinated triazines [2,4,6-tris(p-bromotetrafluorophenoxy)-1,3,5-triazine (2) and 2,4,6-tris(pentafluorophenoxy)-1,3,5-triazine (3)] were synthesised to study their crystal structure and inclusion character. Compound 3 forms channel inclusions with the solvents p-xylene and p-chlorotoluene, showing a stoichiometry of 2∶1 (host∶guest). The channels have dimensions of 7.6 × 3 A2. The host-guest interactions, perfluorophenyl-phenyl stacking, F⋯H- and CH⋯π(perfluorophenyl) contacts, were revealed by the crystallographic and solid state NMR spectroscopy studies. The reversibility of the sorption process through the gas phase could be demonstrated by X-ray diffraction. In contrast to the pentafluorinated compound 3, the tetrafluorinated one (2) showed no inclusions with a number of typical solvents.