1. Department
of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, 84215 Bratislava, Slovakia
2. Department
of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
3. J. Heyrovský
Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic