1. Laboratory of NMR Spectroscopy, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28Prague 6, Czech Republic
2. Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 00Prague 2, Czech Republic
3. Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, 160 00Prague 6, Czech Republic
4. Department of Organic Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28Prague 6, Czech Republic
5. Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16Prague 2, Czech Republic
6. Department of Chemistry, Technical University of Darmstadt, Alarich-Weiss-Straße 16, 64287Darmstadt, Germany
7. Department of Solid State Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28Prague 6, Czech Republic