1. Department of Organic Chemistry; Institute of Chemistry; University of Pannonia; Egyetem u. 10 8200 Veszprém Hungary
2. Department of Chemistry; University of Namur; Rue de Bruxelles 61, B- 5000 Namur Belgium
3. Department of Analytical Chemistry; University of Pannonia; Egyetem u. 10, H- 8200 Veszprém Hungary
4. Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar tudósok körútja 2 1117 Budapest Hungary
5. Department of Inorganic Chemistry and MTA-PTE Research Group for Selective Chemical Syntheses; University of Pécs; Ifjúság u. 6 H-7624 Pécs Hungary