1. Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
2. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
3. Institute of Organic Chemistry and Biochemisty, of the Czech Academy of Sciences, Flemingovo nám, 5, Prague 6, Czech Republic