1. Chair of Inorganic Chemistry I, Bioinorganic Chemistry; Ruhr University Bochum; Universitaetsstrasse 150 44801 Bochum Germany
2. Department of Pharmacy and Biochemistry; University of Bologna; Via Irnerio 48 Bologna Italy
3. Biomolecular NMR; Ruhr University Bochum; Universitaetsstrasse 150 44801 Bochum Germany