1. Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež 1001, 250 68, Řež, Czech Republic
2. Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Praha 6, Czech Republic
3. J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155, 182 00, Prague 8, Czech Republic