1. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 95, CZ-532 10, Pardubice, Czech Republic
2. Department of Physical Chemistry, Institute of Chemical Technology, Technická 5, CZ-166 28 Prague 6, Czech Republic
3. Research Institute for Organic Syntheses, Rybitvi 296, CZ 533 54 Rybitví, Czech Republic