1. J. Heyrovsky Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejskova 3, CZ-18223 Prague 8, Czech Republic
2. Elmarco, s.r.o., V Horkach 76/18, 460 07 Liberec, Czech Republic
3. Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, CZ-12840 Prague 2, Czech Republic