1. Department of General and Inorganic Chemistry; Faculty of Chemical Technology; University of Pardubice; Studentská 573 CZ-532 10 Pardubice Czech Republic
2. Research Institute for Organic Syntheses; Rybitví 296 CZ-533 54 Pardubice Czech Republic
3. Department of Analytical Chemistry; Faculty of Chemical Technology; University of Pardubice; Studentská 573 CZ-532 10 Pardubice Czech Republic
4. Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany