1. Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic
2. Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111 Budapest, Hungary
3. Helmholtz-Institut Erlangen-Nürnberg, Forschungszentrum Jülich, Fürther Straße 248, D-90429 Nürnberg, Germany
4. Department of Chemistry, Eszterházy Károly University, Leányka u. 6, H-3300 Eger, Hungary