1. Department of Inorganic Chemistry University of Pécs and Szentágothai Research Centre H-7624 Pécs, P.O. Box 266 Hungary
2. Department of Analytical and Environmental Chemistry University of Pécs 7624 Pécs, Ifjúság u. 6. Hungary
3. D MTA-PTE Research Group for Selective Chemical Syntheses H-7624 Pécs, Ifjúság u. 6. Hungary