1. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. legií 565, CZ 532 10 Pardubice, Czech Republic, Institute de Chemie Moleculaire de l’Université de Bourgogne (ICMUB-UMR 5260), 9 avenue Alain Savary, BP 47870, F-21078 Dijon Cedex, France, and Department of Inorganic Chemistry, Faculty of Natural Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic