1. Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic
2. Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, SK-812 37, Slovakia
3. Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, CZ-128 00 Prague, Czech Republic